| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 083058000 | WITH RANDOMLY ACTUATED STOPPING MEANS | 78 |
| 20080295660 | Contact detection system for power equipment - A woodworking machine having one or more dangerous portions is disclosed. The machine also includes a safety system configured to detect accidental contact between a person and at least one of the dangerous portions by electrically coupling a signal to the person's body, and detecting if the signal becomes coupled to the dangerous portion. | 12-04-2008 |
| 20090301275 | MANUALLY FED MACHINE FOR WORKING ON MATERIALS, OBJECTS AND THE LIKE, AND PROTECTIVE MEANS FOR SUCH A MACHINE - A manually fed machine for working on materials, objects or the like, in particular a circular saw or a band saw bench, a planing bench, a bench drill, a press, or scissors, comprises a working tool ( | 12-10-2009 |
| 20100011926 | Cutting machine, control unit and recording medium - A cutting machine of the present invention for cutting a material to be cut, which is placed on a table, with a rotating saw blade, includes an imaging device, a determination device and a stopping device. The imaging device takes a video image of an area on the table and outputs the video image. The determination device makes a determination on whether or not a number of pixels of a specific color, which is previously set, exceeds a predetermined threshold in one frame of image constituting the video image outputted from the imaging device. The stopping device stops rotation of the saw blade when it is determined by the determination device that the number of pixels of the specific color exceeds the predetermined threshold. | 01-21-2010 |
| 20100037739 | Power cutting tool with overhead sensing system - A power cutting tool, such as a table saw, comprising a sensing system for detecting certain conditions with respect to an exposed blade of the power cutting tool is disclosed. Several embodiments of the sensing system comprise at least one sensor located above the blade and positioned to (1) monitor one or more volume zones adjacent the blade, (2) detect when an object enters one or more of the zones, and (3) trigger a reaction system in response to the detection. Another embodiment uses an optical sensor to measure the height of objects approaching the blade to detect an increase in the height beyond a predetermined threshold. Still another embodiment uses an optical distance sensor to detect the occurrence of a work piece lifting from the table top which can indicate that a kick-back condition is imminent. The reaction system can be triggered when such a condition is detected. | 02-18-2010 |
| 20100083804 | Discrete proximity detection system - A machine is described having at least one dangerous portion. The machine also includes a safety system to detect dangerous proximity between a person and the dangerous portion and perform a predetermined action to limit or prevent injury to the person from the dangerous portion. The machine may include high voltage generation means, connection means, and electronic detection means. | 04-08-2010 |
| 20100132523 | Replaceable brake mechanism for power equipment - Woodworking machines are disclosed having cutting tools adapted to cut workpieces. The machines include a safety system adapted to detect one or more dangerous conditions between a person and the cutting tool, and to stop movement of the cutting tool upon detection of the dangerous condition. At least part of the safety system is housed in a removable cartridge substantially sealed against entry of sawdust. | 06-03-2010 |
| 20100147123 | Tool emergency brake device - A tool emergency brake device, in particular for a stationary saw, has a brake unit. The brake unit is designed to brake in a self-energizing manner. | 06-17-2010 |
| 20100175525 | Device And Method For Controlling A Brake Of A Microtome - The present invention relates to a device for controlling a brake of a microtome. The microtome ( | 07-15-2010 |
| 20100180739 | Apparatus and method for detecting dangerous conditions in power equipment - Woodworking machines are disclosed having electrically conductive cutting tools adapted to cut workpieces. The machines include a contact detection system capacitively coupled to the cutting tool, and adapted to detect contact between a person and the cutting tool. The machines also include a reaction system configured to cause one or more predetermined actions to take place upon detection of contact between a person and the cutting tool by the contact detection system. | 07-22-2010 |
| 20100192741 | Table saw with improved safety system - A table saw having an adjustable blade, a detection system to detect contact between a person and the blade, and a brake mechanism to engage and stop the blade upon detection of contact between the person and the blade is disclosed. The saw includes a brake positioning system that adjusts the position of the brake mechanism to maintain the brake mechanism in an operative position relative to the blade as the position of the blade is adjusted. The saw also may include a retraction system that urges the blade downward, away from a user, upon detection of contact between a person and the blade. The retraction system may include a releasable gear. The saw may be constructed so that the blade is adjustable up and down around a pivot point downstream of the blade relative to the feed direction. | 08-05-2010 |
| 20100257988 | Miter saw with improved safety system - Miter saws are disclosed having a base, a blade supported by the base, a detection system adapted to detect a dangerous condition between a person and the blade, and a reaction system associated with the detection system to cause a predetermined action to take place upon detection of the dangerous condition. The blade is rotatable, and moves into a cutting zone to cut a workpiece. The predetermined action may be to stop the blade from rotating, to create an impulse against movement of the blade into the cutting zone, or to cause the blade to move away from the cutting zone. The reaction system may include a brake member coupled to a housing. | 10-14-2010 |
| 20100263509 | Miter saw with safety system - A miter saw is disclosed having a base, a blade supported by the base, a detection system adapted to detect a dangerous condition between a person and the blade, and a reaction system associated with the detection system to cause a predetermined action to take place upon detection of the dangerous condition. The blade is rotatable, and moves into a cutting zone to cut a workpiece. The predetermined action may be to retract the blade from the cutting zone. | 10-21-2010 |
| 20100294097 | Work Apparatus With Safety Equipment - In a brush cutter ( | 11-25-2010 |
| 20100307307 | HEALTH AND SAFETY SYSTEM FOR A TABLE SAW - An improved health and safety system for a table saw includes one or more of: a blade guard that protects the operator from the saw blade, and contains and collects sawdust; a proximity detector and emergency saw motor braking means for use in connection with such blade guard; an anti-kickback device for use in connection with such blade guard, a rip fence adapter for use in connection with such a blade guard, and hoses and fittings to connect the dust containment and collection system of said blade guard to a shop dust collection blower or vacuum system. The system protects the saw operator from potential traumatic injury to a hand, and from ingesting potentially carcinogenic sawdust. | 12-09-2010 |
| 20110023673 | Power equipment with detection and reaction systems - Woodworking machines and safety methods for use with those machines are disclosed. The machines include a detection system adapted to detect one or more dangerous conditions and a reaction system associated with the detection system. The reaction system can include an explosive to trigger the system, and also can be configured to retract a cutting tool at least partially away from a cutting region upon detection of a dangerous condition by the detection system. | 02-03-2011 |
| 20110048188 | TABLE SAW WITH ACTUATOR MODULE - A power tool in one embodiment includes a swing arm assembly movable along a swing path between a first swing arm position and a second swing arm position, a latch pin pivotable between a first position and a second position, an actuator module configured to receive a plurality of actuators, a first actuating module position within the actuator module configured to align a first of the plurality of actuators with a strike plate on the swing arm assembly, a loader configured to bias a second of the plurality of actuators from a second actuating module position within the actuator module toward the first actuating module position, and a control system configured to actuate each of the plurality of actuators positioned in the first actuating module position to force the swing arm assembly away from the first swing arm position and toward the second swing arm position. | 03-03-2011 |
| 20110048189 | TABLE SAW WITH POSITIVE LOCKING MECHANISM - A power tool in one embodiment includes a work-piece support surface, a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface, a latch pin pivotable between a first position engaged with the swing arm assembly and a second position whereat the latch is not engaged with the swing arm assembly, an actuator configured to pivot the latch pin from the first position to the second position and to force the swing arm assembly away from the first swing arm position and toward the second swing arm position, and a control system configured to actuate the actuator in response to a sensed condition. | 03-03-2011 |
| 20110048190 | TABLE SAW WITH BELT STOP - A table saw in one embodiment includes a work-piece support surface, a shaping device support shaft automatically retractable along a retraction path to a location beneath the work-piece support surface in response to a sensed condition, a belt positioned across the retraction path, and a control system configured to cause shaping device support shaft to retract along the retraction path in response to a sensed condition. | 03-03-2011 |
| 20110048191 | TABLE SAW WITH SWING ARM SUPPORT - A power tool in one embodiment includes a table saw with a latch hold mechanism, a swing arm pivotable about a pivot along a swing arm path, a latch movable between a first latch position whereat the swing arm is maintained at a first swing arm position and a second latch position whereat the swing arm is not maintained at the first swing arm position, an actuating device configured to transfer a force to the swing arm, at least one swing arm guide extending adjacent to the swing arm path, at least one swing arm support positioned to be in opposition to the at least one swing arm guide along the swing arm path, and a control system configured to control the actuating device to transfer a force to the swing arm sufficient to move the latch from the first latch position to the second latch position. | 03-03-2011 |
| 20110048192 | TABLE SAW WITH MECHANICAL FUSE - A power tool in one embodiment includes a work-piece support surface, a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface, a mechanical fuse positioned to maintain the swing arm assembly in the first swing arm position, an actuator configured to apply a force to the mechanical fuse sufficient to break the mechanical fuse and to force the swing arm assembly away from the first swing arm position and toward the second swing arm position, and a control system configured to actuate the actuator in response to a sensed condition. | 03-03-2011 |
| 20110048193 | TABLE SAW WITH PRESSURE OPERATED ACTUATOR - A power tool includes a work-piece support surface, a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface, a latch pin movable between a first position whereat the latch pin is engaged with the swing arm assembly and a second position whereat the latch is not engaged with the swing arm assembly, a pressure operated actuator configured to force the latch pin from the first position to the second position and to force the swing arm assembly away from the first swing arm position and toward the second swing arm position, and a control system configured to actuate the actuator. | 03-03-2011 |
| 20110048194 | TABLE SAW WITH RESET MECHANISM - A power tool in one embodiment includes a swing arm movable along a swing arm path between an upper first swing arm position and a lower second swing arm position, a latch hold mechanism movable between a first latch hold position adjacent to the swing path and a second latch hold position whereat at least a portion of the latch hold mechanism is within the swing path, an actuator configured to force the swing arm assembly away from the first swing arm position and toward the second swing arm position, a swing arm reset configured to pivot the swing arm from the second swing arm position to the first swing arm position, a latch hold reset configured to pivot the latch hold mechanism from the second latch hold position to the first latch hold position, and a control system configured to control the actuator. | 03-03-2011 |
| 20110048195 | TABLE SAW WITH RATCHET MECHANISM - A table saw in one embodiment includes a work-piece support surface, a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface, a first ratchet member operatively connected to the swing arm assembly, and a second ratchet member movable between a first ratchet position whereat rotation of the first ratchet member in a first and a second direction is allowed, and a second ratchet position whereat the second ratchet member is engaged with the first ratchet member such that rotation in only the first direction is allowed. | 03-03-2011 |
| 20110048196 | TABLE SAW WITH DROPPING BLADE - A power tool in one embodiment is a table saw which includes a latch hold mechanism, a swing arm movable along a swing arm path between a first position adjacent the latch hold mechanism and a second position spaced apart from the latch hold mechanism, a latch movable between a first position whereat the swing arm is maintained at the first position and a second position whereat the swing arm is not maintained at the first position, an actuating device configured to transfer a force to the swing arm when the swing arm is maintained at the first position, and a control system configured to control the actuating device to transfer a force to the swing arm when the swing arm is maintained at the first position sufficient to move the latch from the first position to the second position. | 03-03-2011 |
| 20110048197 | Emergency braking system for machine tools - An emergency braking system for a machine tool for abruptly braking a revolving shaft includes at least one brake drum and at least one brake shoe which are engaged with one another in order to brake the shaft. The braking intervention between the brake drum and the brake shoe takes place under the influence of a centrifugal force resulting from the rotation of a shaft as soon as a locking device is released. Also provided in the braking system is a diagnostic system which allows the functionality of the locking device to be checked. | 03-03-2011 |
| 20110056351 | Table saw with improved safety system - A table saw having a reaction system configured to take a predetermined action to mitigate injury upon detection of a dangerous condition is disclosed. The reaction system has a component in a predetermined orientation relative to the blade and the component is configured to maintain its orientation relative to the blade as the blade is raised and lowered. | 03-10-2011 |
| 20110061504 | EMERGENCY BRAKING SYSTEM FOR MACHINE TOOLS - An emergency braking system for a machine tool, for the abrupt braking of a rotating shaft, including at least one brake drum and at least one brake shoe which are brought into engagement with one another in order to brake the shaft. According to the present system, the system is configured in such a way that the braking engagement between the brake drum and the brake shoe takes place under the influence of a centrifugal force resulting from the rotation of a shaft as soon as a locking device is triggered. | 03-17-2011 |
| 20110072942 | Power equipment with detection and reaction systems - Woodworking machines and safety methods for use with those machines are disclosed. The machines include a detection system adapted to detect one or more dangerous conditions and a reaction system associated with the detection system. The reaction system can include an explosive to trigger the system, and also can be configured to retract a cutting tool at least partially away from a cutting region upon detection of a dangerous condition by the detection system. | 03-31-2011 |
| 20110094359 | EMERGENCY BRAKING SYSTEM OF A MACHINE TOOL - An emergency braking system of a machine tool for the abrupt braking of a rotating shaft of the machine tool, including at least one brake drum and at least one brake shoe, which are brought into engagement with each other in order to brake the shaft. According to the present system, the brake drum engages with the brake shoe under the influence of a centrifugal force resulting from the rotation of a shaft. | 04-28-2011 |
| 20110100177 | PROTECTIVE SYSTEM FOR MACHINE TOOLS - An emergency braking system for abruptly braking a revolving shaft of a machine tool for protecting a user of the machine tool includes a brake drum which may be engaged with at least one brake shoe in order to brake the shaft. The brake drum and the at least one brake shoe are configured in such a way that the braking engagement between the brake drum and the brake shoe takes place under the influence of a centrifugal force or centrifugal acceleration resulting from the rotation of a shaft. | 05-05-2011 |
| 20110138978 | Brake cartridges for power equipment - Safety systems for power equipment and components and brake cartridges for use in those safety systems are disclosed. The safety systems, components and brake cartridges are specifically applicable for woodworking equipment such as saws. An exemplary brake cartridge includes a housing and a braking component configured to engage a moving part of the power tool upon occurrence of a predetermined event. The brake cartridge may further include a switch configured so that proper installation of the cartridge in the power tool triggers the switch. | 06-16-2011 |
| 20110167974 | Emergency stop device for band saw - An emergency stop device for a band saw includes a brake member moveable between a standby position and an active position where the brake member firmly urges and stops a running wheel of the band saw, around which a band saw blade is looped. The brake member is held by a retainer at the standby position when the emergency stop device is inactive. When the emergency stop device is started, the retainer is separated apart from the brake member for enabling the brake member to move by an actuation of a spring member from the standby position to the active position so as to stop the cutting motion of the band saw blade. | 07-14-2011 |
| 20120067181 | Power equipment with systems to mitigate or prevent injury - Woodworking machines are disclosed having cutting tools for cutting workpieces. The machines include a detection system adapted to detect one or more dangerous conditions between a person and the cutting tool. The machines also include a mechanism having a moveable component adapted to move upon detection of the dangerous condition by the detection system. Movement of the moveable component contributes to one or more of the following actions to mitigate or prevent injury to the person: deceleration of the cutting tool, retraction of the cutting tool, and placement of a barrier over at least a part of the cutting tool. An actuator is adapted to move the moveable component at a high acceleration when the dangerous condition is detected. | 03-22-2012 |
| 20120152072 | WEARABLE SAFETY DEVICE FOR CUTTING MACHINE - A safety system prevents cutting machine operators from being accidentally carried through the infeed chute into the machine's cutting mechanism. An operator wears a safety device on his wrist and/or ankle and a sensor array mounts on opposing sides of the cutting machine's infeed chute. The sensor array elements are wound in opposite directions and connect in series opposing. The magnetic field of the safety device induces a current in the sensor array as it moves in the proximity of the sensor array. The safety system generates a signal which is proportional to the sum of the induced currents. When the signal exceeds a threshold, the safety system shuts off power to the feed mechanism and/or the cutting blades of the cutting machine, preventing injury to the operator. | 06-21-2012 |
| 20120227556 | Table Saw with Actuator Reset Mechanism - A power tool in one embodiment includes a work-piece support surface, a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface, a latch hold pivotable between a first latch hold position whereat the swing arm assembly can be supported by the latch hold in the first swing arm position and a second latch hold position whereat the swing arm assembly cannot be supported by the latch hold in the first swing arm position, an actuator chamber configured to receive at least one actuator, an opening in the actuator chamber, and a plug aligned with the opening and connected to the latch hold. | 09-13-2012 |
| 20120325065 | Table Saw with Mechanical Fuse - A power tool in one embodiment includes a work-piece support surface, a swing arm assembly movable along a swing path between a first swing arm position whereat a portion of a shaping device supported by the swing arm assembly extends above the work-piece support surface and a second swing arm position whereat the portion of the shaping device does not extend above the work-piece support surface, a mechanical fuse positioned to maintain the swing arm assembly in the first swing arm position, an actuator configured to apply a force to the mechanical fuse sufficient to break the mechanical fuse and to force the swing arm assembly away from the first swing arm position and toward the second swing arm position, and a control system configured to actuate the actuator in response to a sensed condition. | 12-27-2012 |
| 20130152752 | SAFETY SYSTEM IN A PORTABLE TOOL - Safety system in a portable tool ( | 06-20-2013 |
| 20140150615 | Safety Detection and Protection System for Power Tools - A detection system for detecting a dangerous condition for an operator using a power tool of the type which has an exposed blade relative to a work surface and a protection system for minimizing, if not eliminating the possibility of a user being injured by contacting the blade. In one preferred embodiment of the present invention, a proximity detection system is capable of detecting the presence of a user near the blade of a table saw and a protection system that can either retract the blade below the work surface of the table saw or terminate the drive torque to the blade which can result in rapid stopping of the saw blade by a work piece that is being cut. | 06-05-2014 |
| 20140260852 | Piston for a Pneumatic Cylinder Including a Stress Concentration Structure - A pneumatic cylinder associated with a table saw includes a housing, a charge, and a piston assembly. The housing defines a cavity and is supported by a frame of a table saw. The charge is located within the cavity. The piston assembly is located within the cavity and includes an attachment structure engaged to the housing and a piston head releaseably connected to the attachment structure and in response to activation of the charge the piston head is configured to (i) disconnect from the attachment structure, and (ii) move away from the attachment structure. A swing arm of the table saw is configured to move from a raised position to a lowered position in response to movement of the piston head. | 09-18-2014 |
| 20140338509 | Maintenance and Safety System for a Food Article Slicing Machine - A slicing apparatus and a weighing and classifying conveyor combination with cleanup position wherein, the elevated food article feed mechanism can be collapsed to a maintenance position, the weighing and classifying conveyor is oriented at a distance from the slicing apparatus and the slicing head cover is automatically lifted to an open cleanup position. The machine has laser intrusion detectors that are used to shut down systems when an unwanted intrusion by a person or object is detected. | 11-20-2014 |
| 20150375314 | TABLE SAWS - Table saws are disclosed. The table saws can include a blade, an arbor, an arbor block, an elevation carriage, and a latch that connects the arbor block and the elevation carriage. The arbor block can have a first position in which the latch connects the arbor block and the elevation carriage, and a second position in which the latch does not connect the arbor block and the elevation carriage. The arbor block can pivot from the first position to the second position upon the occurrence of a retraction force. The table saw can include an actuator to cause the occurrence of the retraction force, and detection electronics to detect contact between the blade and a person. Woodworking machines with detection and reaction systems are also disclosed. A reaction system can include an explosive that causes retraction of a cutting tool. | 12-31-2015 |
| 20160008997 | TABLE SAWS | 01-14-2016 |
| 20160167142 | Ratchet and Release Mechanism for Swing Arm of Table Saw | 06-16-2016 |
| 20190145577 | ENHANCED SAFETY ATTACHMENT FOR CUTTING MACHINE | 05-16-2019 |
| 083061000 | With sensing of product or product handling means | 2 |
| 20090165615 | Table saws - A table saw | 07-02-2009 |
| 20090266207 | SAFETY DEVICE FOR MACHINE TOOL - The safety device mainly contains a main controller, a detector, and an emergency braking member. The main controller contains a detection member connecting the detector, an alarm member producing visual or audible alarm, and a driving member for activating the emergency braking member to reverse or stop the motor of the machine tool. The detection member could be an electrostatic detection unit, or a capacitance detection unit, or a combination of the two. The detector is positioned on a top surface of a platform and in front of a saw of the machine tool. The detector could also be part of an axle of the saw so that the saw is effectively an extension of the detector and provides both cutting and safety functions. | 10-29-2009 |
| 083062000 | Responsive to tool detector or work-feed-means detector | 25 |
| 20090000443 | Detection system for power equipment - A machine is disclosed having a detection subsystem adapted to detect contact between a person and a specified portion of the machine, and to distinguish that contact from contact with other materials. The detection subsystem imparts an electrical signal to a specified portion of the machine, and distinguishes that contact based on a predetermined frequency response of the electrical signal. A reaction subsystem then causes a predetermined action to take place. The machine may be a power saw designed to minimize injury in the event a person accidentally contacts the blade. | 01-01-2009 |
| 20110088525 | PROTECTIVE SYSTEM FOR MACHINE TOOLS - An emergency brake system for abrupt braking of a revolving shaft of a machine tool includes at least one brake drum and at least one brake shoe that are brought into engagement with one another in order to brake the shaft. The braking engagement between the brake drum and brake shoe occurs under the influence of a centrifugal force resulting from rotation of a shaft, the brake system being self-reinforcing, in particular self-locking. | 04-21-2011 |
| 20110226105 | SAFETY MECHANISMS FOR POWER TOOLS - Various safety systems for power tools, and in particular table saws, are disclosed herein. The disclosed safety systems include detection systems for detecting a dangerous condition relative to a blade of the power tool, reaction systems for taking mitigation action in response to detection of a dangerous condition. Generally, the embodiments described herein may detect, prevent, and/or mitigate a dangerous condition associated with the power tool. | 09-22-2011 |
| 20120167732 | Detection system for power equipment - Woodworking machines including conductive cutters adapted to cut workpieces, and motors adapted to drive the cutters are disclosed. The machines also include a contact detection system adapted to detect contact between a person and the cutter, and to distinguish contact between the person and the cutter from contact between the workpiece and the cutter. The machines further include a reaction system adapted to cause a predetermined action to take place upon detection of contact between the person and the cutter by the contact detection system. | 07-05-2012 |
| 20120204689 | Paper Cutting Apparatus and Printing Apparatus - A paper cutting apparatus, comprising: a cutting unit configured to cut paper; a moving unit configured to move the cutting unit in a direction intersecting the conveyance direction of the paper; a motor configured to drive the moving unit; a detection unit configured to detect the current value of the motor; a determination unit configured to determine the state of the current value while the cutting unit that has begun moving from a specific position toward a target stop position is moving from a downstream end of the paper to a predetermined target stop position in the movement direction of the cutting unit; and a control unit configured to stop the drive of the motor on the basis of the determination result of the determination unit. | 08-16-2012 |
| 20150075342 | SAFETY MECHANISMS FOR POWER TOOLS, INCLUDING KICKBACK DETECTION SYSTEM WITH TORQUE SENSOR - Various safety systems for power tools, and in particular table saws include detection systems for detecting a dangerous condition relative to a blade of the power tool, reaction systems for taking mitigation action in response to detection of a dangerous condition. The safety system may detect, prevent, and/or mitigate a dangerous condition associated with the power tool. | 03-19-2015 |
| 20150075343 | SAFETY MECHANISMS FOR POWER TOOLS, INCLUDING MAGNETORHELOGICAL BRAKE FOR BLADE - Various safety systems for power tools, and in particular table saws include detection systems for detecting a dangerous condition relative to a blade of the power tool, reaction systems for taking mitigation action in response to detection of a dangerous condition. The safety system may detect, prevent, and/or mitigate a dangerous condition associated with the power tool. | 03-19-2015 |
| 083620100 | Responsive to tool characteristic | 18 |
| 20080196565 | INJURY MITIGATION SYSTEM FOR POWER TOOLS - A power tool comprises a detection system for detecting a situation where an operator using a power tool of the type which has an exposed rotating component contacts the rotating component, and a protection system for minimizing the possibility of an operator being injured by contacting the rotating component. | 08-21-2008 |
| 20080282858 | Miter saw with improved safety system - A miter saw is disclosed having a base, a blade supported by the base, a detection system adapted to detect contact between a person and the blade, and a reaction system associated with the detection system to cause a predetermined action to take place upon detection of the dangerous condition. The blade is rotatable, and moves into a cutting zone to cut a workpiece. The predetermined action may be to stop the blade from rotating. | 11-20-2008 |
| 20090133553 | Table saw with improved safety system - A table saw having a brake mechanism configured to engage and stop a blade is disclosed. The table saw includes a brake positioning system configured to adjust the position of the brake mechanism to maintain the brake mechanism in an operative position relative to the blade as the blade is raised and lowered. | 05-28-2009 |
| 20100089212 | Logic control for fast-acting safety system - Woodworking machines including cutting tools and motors adapted to drive the cutting tools are disclosed. The machines also include a detection system adapted to detect a dangerous condition between the cutting tool and a person, and a reaction system adapted to perform a specified action upon detection of the dangerous condition. The machines further include a control system adapted to test the operability of at least a portion of the detection system and/or the reaction system. The control system is adapted to disable the motor if the tested portion is inoperable. | 04-15-2010 |
| 20100132524 | Contact detection system for power equipment - A woodworking machine having one or more dangerous portions is disclosed. The machine also includes a safety system configured to detect accidental contact between a person and at least one of the dangerous portions by electrically coupling a signal to the person's body, and detecting if the signal becomes coupled to the dangerous portion. | 06-03-2010 |
| 20100251866 | Motion detecting system for use in a safety system for power equipment - A method of controlling a woodworking machine having a movable cutting tool. The method monitors a signal for a change indicative of a dangerous condition between the cutting tool and a person, senses movement of the cutting tool, and performs an action to mitigate the dangerous condition when the signal change and movement of the cutting tool are both detected. A woodworking machine including a detection system adapted to detect a dangerous condition between a person and a working portion of the machine and then to perform some action to mitigate the dangerous condition is also disclosed. A motion detection system is adapted to detect motion of the working portion and to disable the reaction system when the working portion is not moving. | 10-07-2010 |
| 20100294098 | Work Apparatus With Safety Equipment - An engine-driven brush cutter ( | 11-25-2010 |
| 20100319508 | DEVICE FOR DISPENSING PAPER SECTIONS - An apparatus for dispensing sections of a paper web has a cutting roller and an outlet-side pressing roller that presses the paper web onto the cutting roller. The pressing roller is provided with a drive, in particular a motorized drive and the pressing roller for its part drives the cutting roller. | 12-23-2010 |
| 20110226106 | SHEAR DEFLECTION DETECTION - A through beam shear angle change, cutting blade deflection detector including a cutting member within a shear box of a recycling machine, a through beam sensor including an emitter disposed on the cutting member and a receiver disposed on the cutting member, the receiver being disposed relative to the emitter for receiving a signal emitted from the emitter, and a controller connected to at least the receiver, the controller being configured to determine an amount of cutting member deflection based on an output of the receiver. | 09-22-2011 |
| 20110239837 | Logic control for fast-acting safety system - Woodworking machines including cutting tools and motors adapted to drive the cutting tools are disclosed. The machines also include a detection system adapted to detect a dangerous condition between the cutting tool and a person, and a reaction system adapted to perform a specified action upon detection of the dangerous condition. The machines further include a control system adapted to test the operability of at least a portion of the detection system and/or the reaction system. The control system is adapted to disable the motor if the tested portion is inoperable. | 10-06-2011 |
| 20110308365 | SAFETY DEVICE FOR MACHINE TOOL - A safety device for a machine tool includes a machine, a main controller, a detection unit, a warning system, a drive circuit and a temporary stop device. The detection unit includes a contact sensing element and a non-contact sensing element. After the detection unit is induced and triggered by a charged body, a sensing signal is generated and transmitted to the main controller and interpreted by the main controller to drive the warning system, and the drive circuit transmits an analog signal to a charged body of the temporary stop device to rotate a motor of the machine in a reverse direction for a brake. The present invention provides a double sensing protection device with both contact and non-contact sensing effects to improve the safety of using the machine tool and prevent operators from being injured. | 12-22-2011 |
| 20120067182 | Apparatus and method for detecting dangerous conditions in power equipment - Woodworking machines are disclosed having electrically conductive cutting tools adapted to cut workpieces. The machines include a contact detection system capacitively coupled to the cutting tool, and adapted to detect contact between a person and the cutting tool. The machines also include a reaction system configured to cause one or more predetermined actions to take place upon detection of contact between a person and the cutting tool by the contact detection system. | 03-22-2012 |
| 20120118118 | METHOD FOR CUTTING BLADE CONTROL SYSTEM, PARTICULARLY FOR CUTTING-OFF MACHINES FOR CUTTING LOGS OF WEB MATERIAL - A control method for a cutting blade, particularly for cutting-off machines for logs of web material, interrupts operation of the cutting blade when deformation of the blade reaches a preset deformation value and resumes operation of the cutting blade when the deformation of the blade is less than another preset deformation value. The control method measures deformation values of at least a portion of the cutting blade, compares the measured deformation values with at least one preset deformation value set by an operator, and sends, according to signals coming from the result of the comparison, control signals to a motor of the machine to control the start up and/or the stop of the motor. | 05-17-2012 |
| 20120152073 | SAFETY SYSTEM AND METHOD FOR CUTTING MACHINE - A safety system prevents cutting machine operators from being accidentally carried through the infeed chute into the machine's cutting mechanism. An operator wears a safety device on his wrist and/or ankle and a sensor array mounts on opposing sides of the cutting machine's infeed chute. The sensor array elements are wound in opposite directions and connect in series opposing. The magnetic field of the safety device induces a current in the sensor array as it moves in the proximity of the sensor array. The safety system generates a signal which is proportional to the sum of the induced currents. When the signal exceeds a threshold, the safety system shuts off power to the feed mechanism and/or the cutting blades of the cutting machine, preventing injury to the operator. | 06-21-2012 |
| 20120260785 | POWER TOOL SAFETY MECHANISMS - A sensing mechanism ( | 10-18-2012 |
| 20140245872 | SYSTEMS AND METHODS FOR A CHAINSAW SAFETY DEVICE - Systems and methods for a chainsaw safety device are described. In some embodiments, a method comprises activating a chainsaw, receiving a first acceleration value associated with acceleration of the chainsaw, comparing the first acceleration value to a predetermined acceleration threshold, and deactivating the chainsaw based on the comparison. | 09-04-2014 |
| 20140290455 | APPARATUS FOR DETECTING DANGEROUS CONDITIONS IN POWER EQUIPMENT - Woodworking machines are disclosed having electrically conductive cutting tools adapted to cut workpieces. The machines include a contact detection system capacitively coupled to the cutting tool, and adapted to detect contact between a person and the cutting tool. The machines also include a reaction system configured to cause one or more predetermined actions to take place upon detection of contact between a person and the cutting tool by the contact detection system. | 10-02-2014 |
| 20160167248 | Power Tool Safety Mechanisms | 06-16-2016 |
| 083063000 | Responsive to work sensing means | 6 |
| 20080202301 | SHEET PROCESSING APPARATUS AND IMAGE FORMING APPARATUS - A sheet processing apparatus, by which a failure in control does not occur even if cutting wastes are conveyed by a conveying unit and an image forming apparatus having the sheet processing apparatus are provided. The sheet processing apparatus has a cutter unit for cutting a sheet, a dust box for accommodating the cutting wastes, a conveying belt pair which conveys the cut sheet, sensors for detecting the sheet conveyed by the conveying belt pair, and a controller for controlling conveyance of the sheet based on the signals detected by the sensors, wherein when the length of the sheet detected by the sensor is equal to or less than a predetermined amount, the controller does not determine the sheet as a sheet. | 08-28-2008 |
| 20100212466 | MACHINE TOOL MONITORING DEVICE - A machine tool monitoring device having a detection unit, which is configured to detect the presence of a material type in a machine tool work area by spectral analysis of a radiation. The detection unit has a sensor unit having at least one sensitivity region for detecting radiation in a wavelength range that is situated at least partially in the infrared spectrum. | 08-26-2010 |
| 20110079124 | POWER TOOL SAFETY MECHANISMS - A sensing mechanism ( | 04-07-2011 |
| 20120204690 | MANUALLY FED MACHINE FOR WORKING ON MATERIALS, OBJECTS AND THE LIKE, AND PROTECTIVE MEANS FOR SUCH A MACHINE - A manually fed working machine including a working tool, a feeding area in front of the tool, a detector covering at least a section of the feeding area for a contactless detection of human skin, the detector comprising at least one radiation unit and at least one receiver unit. The at least one radiation unit emitting radiation towards said section of the feeding area, said radiation being emitted with at least two different wavelengths in the wavelength range between 900 nm and 1500 nm, whereas the at least one receiver unit receives the radiation reflected from the section of the feeding area, and a signal evaluation unit connected with the detector calculating the quotients or differences of the intensities of the reflected radiations received by the receiver unit and the at least two different wavelengths emitted from the radiation unit. | 08-16-2012 |
| 20140090530 | Power Tool With Circuit For Sensing Contact Between An Implement And An Object - A power tool includes a sensing circuit mounted on a printed circuit card is electrically connected to a switching power supply that supplies electrical power to the sensing circuit. The sensing circuit is not connected to earth ground to enable detection of an operator approaching a moving implement without the operator necessarily being electrically connected to earth ground. | 04-03-2014 |
| 083066000 | Detector supported on or urged against work | 1 |
| 083067000 | Resiliently biased | 1 |
| 20150082956 | ELECTRIC PLANING KNIFE - An electric planing knife comprising: a knife rest with a planing cavity formed within the knife rest and adapted to permit insertion of a pencil-shape object; a cutter comprising a blade, wherein the cutter is mounted within said planing cavity; and an electric circuit disconnector comprising a trip lever and a resilient elastic reset switch, said elastic reset switch being disposed under said planing cavity, the upper end of said elastic reset switch being located within said planing cavity, the upper end of said trip lever being connected with said elastic reset switch and being disposed below said elastic reset switch, said elastic reset switch being electrically connected to said cutter; and a sharpness adjustor below the planing cavity. | 03-26-2015 |
| 083068000 | Manually operated | 1 |
| 20120090439 | HEALTH AND SAFETY SYSTEM FOR A TABLE SAW - An improved health and safety system for a table saw includes one or more of: a blade guard that protects the operator from the saw blade, and contains and collects sawdust; a proximity detector and emergency saw motor braking means for use in connection with such blade guard; an anti-kickback device for use in connection with such blade guard, a rip fence adapter for use in connection with such a blade guard, and hoses and fittings to connect the dust containment and collection system of said blade guard to a shop dust collection blower or vacuum system. The system protects the saw operator from potential traumatic injury to a hand, and from ingesting potentially carcinogenic sawdust. | 04-19-2012 |
