| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 173218000 | Fluid motor | 45 |
| 20090020303 | ADAPTIVE, ERGONOMIC, MULTI-PURPOSE HAND-HELD TOOL WITH FLEXIBLE DRIVE SHAFT - An adaptive, ergonomic designed multi-purpose air motor driven hand-held trimmer that uses the air motor as the handle, has the air motor offset at an angle of 25 degrees to the fore and aft axis of the base plate and downward 10 degrees, to thereby have the center of gravity as near as possible to the wrist of the operator so that there will not be a constant bending of the wrist or exerting of constant hard pressure on the tissue at the base of the hand, thus virtually eliminating the possibility of the operator acquiring the carpal tunnel syndrome. Further disclosed are particular flexible drive shafts which may be used in the tool. | 01-22-2009 |
| 20100193212 | Hydraulic pick - A piston rod with a piston, against which a displaceable valve ring, a short, axially rigid striking pin, guided in a bush, and a pressure transformer piston are set, is immovably placed in one part of the supporting housing. A working tool is placed in the second part of the supporting housing in a tool bush protected on the outside by a lower sealing cover to prevent corrosion. A gas chamber is set up under the supporting housing, the pressure transformer piston and the striking pin. A pressure transformer cylinder and an equalizing chamber are formed between the piston rod and tfe pressure transformer piston. The striking pin is driven by a working fluid under pressure, which is distributed by a system of channels in the piston rod. The striking pin is driven onto the working tool in a striking action by high-pressure gas, which is pressurized in the gas chamber. The movement of the striking pin is controlled by a switching element, fitted in the piston rod, and a valve ring, pushed onto the piston rod surface. It is assisted by the pressure transformer, which eliminates pressure peaks of the working fluid. | 08-05-2010 |
| 20100212924 | WHEEL CYLINDER BRAKE ADJUSTER - The present invention provides a wheel cylinder brake adjuster. The main body of the adjuster has an actuating cylinder, a front seat, a rear seat, an intake handle and a baffle plate. There is a thrust set, and an assembly ring surface arranged at a rear end of the rear seat. First and second intake holes are arranged at intervals on the assembly ring surface. An air path switching ring is placed on the assembly ring surface. The first and second air holes are arranged at intervals on the inner ring surface and have interiors interconnected via a draining space. A pressure release state is made possible when the air path switching ring is rotated to the first rotation position. A plurality of spacing support parts are supported between the inner ring surface and assembly ring surface so that a spaced air leakage space is normally formed. | 08-26-2010 |
| 20100270049 | HANDHELD TOOL WITH A LINEAR OSCILLATING DRIVE - A handheld tool with a pneumatically operated linear oscillating drive is provided. The handheld tool has a motor housing and a piston movable in the motor housing, which separates the two working chambers of the motor housing from one another. A piston crown faces toward one chamber of the two working chambers, with a compressed air supply line toward the motor housing and a slide valve, which controls an alternating supply of compressed air to one and the other of the two working chambers, and with an exhaust air opening in the motor housing. The handheld power tool is distinguished in that the piston additionally has a piston skirt facing toward the other chamber of the two working chambers. | 10-28-2010 |
| 20110036611 | ADAPTIVE, ERGONOMIC, MULTIPURPOSE HAND-HELD TOOL WITH FLEXIBLE DRIVE SHAFT - An adaptive, ergonomic designed multi-purpose air motor driven hand-held trimmer that uses the air motor as the handle, has the air motor offset at an angle of 25 degrees to the fore and aft axis of the base plate and downward 10 degrees, to thereby have the center of gravity as near as possible to the wrist of the operator so that there will not be a constant bending of the wrist or exerting of constant hard pressure on the tissue at the base of the hand, thus virtually eliminating the possibility of the operator acquiring the carpal tunnel syndrome. Further disclosed are particular flexible drive shafts which may be used in the tool. | 02-17-2011 |
| 20110147032 | TILTABLE TOOL ASSEMBLY - A fluid-powered tool actuator usable with a vehicle having an arm and a rotation link for rotation of the tool actuator in a first plane and being laterally tiltable in a second transverse plane. In some embodiments pressurized fluid is communicated using distribution channels and passageways internal to the actuator to limit use of external hydraulic lines. In some embodiments the tool actuator has certain components in a compressive pre-loaded state to reduce their fatigure failure during operation of the tool actuator under load. | 06-23-2011 |
| 20110297412 | ROTATIONALLY DRIVEN AIR TOOL - A rotationally driven air tool configured to be capable of retaining a lubricant in a gear of a rotation transmitting mechanism as long as possible has an air motor ( | 12-08-2011 |
| 20120000685 | Pneumatic Power Tool - A pneumatic power tool includes a pneumatic motor mounted in a housing and supplied to pressured air through an air control unit to rotate a drive coupler, a coupling shell member surrounding the drive coupler and having axially opposite actuating and engaging regions, an output spindle having a bearing surface disposed between the drive coupler and the engaging region, and an override clutch unit coupling the drive coupler to the coupling shell member. An override movement of a driven clutch half on the engaging region brings the actuating region to move axially so as to force a latch to an unlatched position such that the air control unit is displaced to a shut-off state. | 01-05-2012 |
| 20120024556 | Three-in-one air tool - A three-in-one pneumatic tool combining interchangeable tool heads with a standard pneumatic rotary drive assembly. The system includes drill, die grinder, and ratchet tool heads that may be attached/detached as desired from a pneumatic drive assembly. A quick-release coupling mounted at the mating end of the pneumatic drive assembly allows the user to easily insert the corresponding mating end of the various tool heads into the pneumatic drive so they may then be used in the same manner as their more traditional versions. | 02-02-2012 |
| 20120090864 | APPARATUS FOR TIGHTENING OR LOOSENING FASTENERS - Apparatus for tightening or loosening fasteners pneumatically, electrically, hydraulically and manually driven are disclosed, and in one example includes: a receiving member, rotatably supported in the apparatus for tightening or loosening, for receiving the fastener; a device for effecting rotation of the receiving member to tighten or loosen the fastener; and an apparatus which transfers a reaction force during tightening or loosening of the fasteners. The apparatus which transfers a reaction force includes: a first force-transmitting element rotatably attachable about a turning force axis of the device for effecting rotation; and a second force-transmitting element either rotatably attachable about, extensibly and retractably attachable along, or rotatably attachable about and extensibly and retractably attachable along at least a portion of the first element. | 04-19-2012 |
| 20120292071 | AIR CYLINDER UNIT AND PNEUMATIC TOOL HAVING THE SAME - An pneumatic tool includes a front section, a rear section connected to and disposed behind the front section, a driving unit, and an air cylinder unit. The rear section includes a main body, a handle connected to the main body and adjacent to the front section, and an intake passage in fluid communication with the outside. The air cylinder unit includes a first cylinder mounted within the rear section, a second cylinder connected to the first cylinder, an extension portion extending into the handle, and an inclined intake channel having an inlet in fluid communication with intake passage, and an outlet in fluid communication with the first cylinder. The rotor unit is mounted rotatably within the first and second cylinders for activating the driving unit. | 11-22-2012 |
| 20130056237 | POWER WRENCH WITH HYDRAULIC PULSE UNIT - A power wrench has a rotation motor, and a hydraulic pulse unit. The pulse unit includes an inertia drive unit connected to the motor. The inertia drive unit includes an oil chamber with an impulse generating mechanism, and an output spindle extending into the oil chamber to receive torque impulses. The inertia drive unit has a cylindrical member defining the oil chamber, a rear end wall, and an air separator element co-rotating with the wall and having a substantially axially facing surface which together with a congruent surface on the rear end wall forms oil passages in the form of a clearance gap through which oil mixed with air is circulated between one or more oil inlet openings, past one or more air outlet openings, to one or more oil outlet openings. Air is extracted from the oil and is gathered in a centrally located air collecting chamber. | 03-07-2013 |
| 20130068494 | Power Structure of a Hydraulic Tool - A power structure of a hydraulic tool contains a base including an outer thread section, a first passage, a second passage, a first hole, a second hole, and a first groove; a first connecting unit including a first tap, a first adapter, a first joint, and a first check nut; a second connecting unit including a second tap, a second adapter, a second joint, and a second check nut; a cylindrical tube including a receiving space, first external screws, first internal screws, and second internal screws; a first spindle including a first path and a second groove; a second spindle including a second path, two orifices, second external screws, third internal screws, and a third groove; a retaining loop; a fitting loop; a plug; a paw unit. | 03-21-2013 |
| 20130118769 | AIR PRESSURE REUSED PNEUMATIC HAMMER DRILL - An air pressure reused pneumatic hammer drill comprises a rotary driven head, a housing and a ground entry and operation unit which includes a pneumatic hammer duct to hold a hollow pneumatic hammer piston and a drill, an integrated hood with an air cycling chamber communicating with the pneumatic hammer duct, a stone discharge duct which has a first stone and air discharge duct at an upper side communicating therewith, a discharge air inlet running through the integrated hood and communicating with the air cycling chamber, and an air discharge duct communicating with the discharge air inlet and the first stone and air discharge duct. The discharge air inlet and the air discharge duct are interposed by a check valve. Thus the invention not only can save electricity resource to reduce cost, but also can shorten working hours to save manpower to meet requirements in engineering industry. | 05-16-2013 |
| 20130319713 | HANDLE BODY FOR PNEUMATIC TOOL - A pneumatic tool includes a handle body, an output unit having a driving head, a driving unit for driving the output unit, and a switching unit operable to change the rotational direction of the driving head. The handle body includes: a surrounding wall having a top surface and an axial space that has a central axis and that is adapted to permit the driving unit to be mounted therein; a mounting unit disposed at the top surface of the surrounding wall and adapted to permit the switching unit to be mounted therein; and a through hole formed vertically through the surrounding wall and in spatial communication with the axial space, the through hole being adapted to permit the output unit to be mounted therein. | 12-05-2013 |
| 20140020923 | PNEUMATIC TOOL - A pneumatic tool includes a shell body with an air-feeding path, a cylinder including first and second air passages, a rotary valve, and a valve control component. The rotary valve has an intermediate air passage, and is rotatable among first, second and third angular positions to control airflows from the air-feeding passage to the first and second air passages, so as to control output power of the pneumatic tool. The valve control component is disposed on the shell body and is operable by an external force to bring the rotary valve into rotation among the first, second and third angular positions. | 01-23-2014 |
| 20140060872 | ROTATABLE LEVER STRUCTURE OF A PNEUMATIC TOOL AND PNEUMATIC TOOL INCLUDING THE SAME - A rotatable lever structure of a pneumatic tool and a pneumatic tool including the same are provided. The rotatable lever structure is mounted to a main body of the pneumatic tool. The main body has a first portion and a second portion. The first portion is arranged with a lever and an entrance passage for pressurized air. A connection mechanism is detachably mounted to the second portion, and the first portion and the second portion are relatively rotatably connected via the connection mechanism. Whereby, the lever can be selectively rotated relative to the second portion, and is easy to use and less limited for various working environments. | 03-06-2014 |
| 20140069677 | AIR CONTROL DEVICE AND AIR CONTROL METHOD - An air control device includes an air suction port, air discharge ports, and an air control system. The air suction port takes in air. The air discharge ports discharge the taken-in air. The air control system discharges the air through the air discharge ports alternately for respective preset times. An air control method includes: taking in air; and discharging the air alternately through air discharge ports for respective preset times. | 03-13-2014 |
| 20140209342 | PNEUMATIC HAND TOOL - A pneumatic hand tool comprises a housing, a pneumatic motor held in the housing and an airflow regulation valve to control spinning direction of the pneumatic motor. The housing includes a handgrip and a holding portion connected to the handgrip. The handgrip has an airflow passage to receive driving airflow. The holding portion has a housing chamber to house the pneumatic motor and airflow regulation valve, and also has a first wall opposing the handgrip and a flow channeling chamber integrally extended from the first wall towards the housing chamber. The flow channeling chamber has a first directing vent located on the first wall and communicated with the airflow passage to receive the driving airflow and a second directing vent communicated with the airflow regulation valve to output the driving airflow to drive the pneumatic motor. | 07-31-2014 |
| 20140311763 | PERCUSSION MECHANISM - A percussion mechanism includes a first shaft and a second shaft. One or more vanes are fastened to the first shaft. The vanes are arranged so as to be rotatable in a chamber of the second shaft. The chamber is filled with a magnetorheological fluid. A magnetic field source on the second shaft generates a magnetic field that is spatially modulated in the circumferential direction inside the chamber. | 10-23-2014 |
| 20140352997 | MOTOR SPINDLE - The invention relates to a motor spindle comprising at least one spindle drive which can be supplied with energy and/or operating supplies via at least one feed line. This motor spindle has a fixedly installed first coupling element of a multi-coupling, to the ports of which the feed lines for transmitting energy and/or operating supplies are connected. The invention also relates to a machine tool comprising such a motor spindle, wherein the machine tool has a second coupling element of the multi-coupling. On this second coupling element, the respective complementary ports for transmitting energy and/or operating supplies are arranged. | 12-04-2014 |
| 20150014014 | FASTENER INSTALLATION TOOL - A fastener installation tool including a cylinder assembly, a handle/sleeve assembly, and a tool head. The handle/sleeve assembly includes a handle having a bore and a sleeve positioned within the bore. An inner wall of the sleeve includes a first portion with a first inner diameter and a second portion with a second inner diameter. The sleeve includes an outer wall having a first portion with a first outer diameter and a second portion with a second outer diameter, the first outer diameter of the first portion of the outer wall of the sleeve being greater than the second outer diameter of the second portion of the outer wall of the sleeve. A space is formed between the second portion of the outer wall of the sleeve and the second portion of the inner wall of the handle, which enables the sleeve to flex during operation of the tool. | 01-15-2015 |
| 20150053450 | STATOR FOR A HYDRAULIC WORK TOOL ASSEMBLY - A hydraulically activatable work tool assembly for a machine is provided. The work tool assembly includes a first manifold assembly, a second manifold assembly, and a stator. The second manifold assembly is structured and arranged to rotate relative to the first manifold assembly. The second manifold assembly is in fluid communication with the first manifold assembly. The stator is disposed within the second manifold assembly and defines a mounting surface structured and arranged to abut a mounting pad. The stator defines a mounting surface structured and arranged to abut a base plate frame disposed proximal to the second manifold assembly. The stator includes a channel extended from the mounting surface along an axial length of the stator. Further, a plug is sealably positioned in the channel of the stator, corresponding to the plug being in an abutment relationship with the base plate frame. | 02-26-2015 |
| 20150075832 | Pneumatic Tool - A pneumatic tool has an outer casing, a selector valve, a switching button and a cover. The outer casing has two elongated holes formed through an external surface of the outer casing, facing and communicating to each other. The selector valve is rotatably mounted in the outer casing and has a communicating hole and two connecting blocks. The connecting blocks are axially formed on and protrude from an external surface of the selector valve, align with each other and respectively face to the elongated holes. The switching button is detachably connected to one of the connecting blocks and extends out of one of the elongated holes. The cover is detachably connected to the outer casing to cover the other elongated hole and has a shape corresponding to a shape of the external surface of the outer casing. | 03-19-2015 |
| 20150075833 | Fluid Powered Spindle - A fluid-powered high-speed spindle ( | 03-19-2015 |
| 20150090472 | FLUID-DRIVEN MEDICAL OR DENTAL HANDLE - A medical or dental fluid-driven handle with a control or regulation circuit for the control or regulation of the rotational speed of a rotary part to a predetermined rotational speed and methods are presented. The handle comprises a rotary part that can be set in rotary motion by a drive fluid, a fluid line carrying the drive fluid to or from the rotary part or a fluid branch line that is connected to a fluid line carrying the drive fluid, and a control or regulation circuit that is designed to control or regulate the rotational speed of the rotary part. An electrodynamic converter is driven by the rotary part for generating electrical energy. An actuator element is configured to act on the drive fluid and is electrically connected to the electrodynamic converter such that the actuator element is supplied with electrical energy generated by the electrodynamic converter. | 04-02-2015 |
| 20150328762 | Speed Limiting Governor of a Rotating Shaft in Air - A power tool includes a housing, an output shaft, and a tool holder connected to the output shaft. A rotor assembly is attached to the output shaft that is configured to be acted on by a fluid flow through the housing to cause rotation of the output shaft. A centrifugally movable fluid flow governor is coupled to the output shaft that is configured to move outwardly from the output shaft to alter a force acting on the rotor assembly when the output shaft reaches a predetermined speed. | 11-19-2015 |
| 20160059379 | PNEUMATIC POWER TOOL WITH AN OVER-SPEED SAFETY DEVICE - A pneumatic power tool includes: a housing with a pressure air inlet passage, a rotation motor, a working implement carrying output shaft, and an over-speed safety device including: a valve element located in the inlet passage and shiftable between open and closed positions, a motor speed responsive actuating mechanism which can shift the valve element from an open to a closed position as motor speed reaches an accepted maximum limit, and a retaining unit which maintains the valve element in an open position at normal motor speed levels and releases it toward the closed position when actuated by the actuating mechanism. The retaining unit includes: a latch spindle having varying width in an axial direction and coupled to the actuating mechanism for displacement between valve element locking and releasing positions at the maximum speed limit, and a support surface and axially adjacently located one or more waist portions. | 03-03-2016 |
| 20160250730 | FLUID POWERED SPINDLE | 09-01-2016 |
| 173219000 | Having sound attenuator | 4 |
| 20090090530 | NOISE ABATEMENT DEVICE FOR A PNEUMATIC TOOL - Noise-abatement devices are provided for a pneumatic tool that can include a housing having a first end and a second end. An expansion chamber is defined within the expansion chamber. At least one tube is located at least partially within the expansion chamber in which the tube has at least a perforated portion, and an outlet defined therein. The device also includes a port outlet in fluid communication with the expansion chamber in which the port outlet and the outlet are located near the second end of the housing. | 04-09-2009 |
| 20100288522 | Pneumatic tool with an improved soundproof device - A pneumatic tool with an improved soundproof device includes a housing whose rear end has a screw hole for supplying a high-pressure gas. The input high-pressure gas drives a pneumatic motor before it leaves the rear end of the housing. A cover covers the rear end of the housing. The cover has a penetrating hole. A guiding element has a guiding section that gradually expands outwards. The guiding element goes through the penetrating hole. An annular ventilation space is formed between the guiding section of the guiding element and the penetrating hole. A gas inlet connector is disposed in the screw hole. The shoulder part of the gas inlet connector stops the guiding element, so that the gas in the ventilation space is guided by the guiding section of the guiding element to escape. | 11-18-2010 |
| 20120024557 | PNEUMATIC POWER WRENCH WITH AN EXHAUST AIR OUTLET UNIT - A portable pneumatic power wrench has a housing with a handle, a motor, a pressure air inlet passage, and an outlet passage for ducting exhaust air from the motor out of the housing. An outlet unit is connected to the outlet passage and has a first outlet opening section forming a main exhaust air flow path, a second outlet opening section forming an additional exhaust air flow path, and a manually operable valve arranged to control the additional exhaust air flow path by opening or closing the second outlet opening section. The total outlet flow area of the main exhaust air flow path and the additional exhaust air flow path gives an augmented torque output of the power wrench. | 02-02-2012 |
| 20140014387 | PNEUMATIC SCREWER - A pneumatic screwing device includes a spindle for rotatably supporting a screwing tool, a pneumatically drivable rotor for rotating the spindle and a stator for housing the rotor. A gap is defined between the rotor and the stator to receive pressurised air and a supply conduit in the stator delivers pressurised air to the gap. Discharge conduits in the stator discharge pressurised air from the gap. In order to make the pneumatic screwing device more efficient than known devices, there is provided an expansion chamber in communication with the discharge conduits for expanding the pressurised air, the expansion chamber being positioned on an opposite side of the spindle with respect to the rotor and being in communication with the atmosphere. A switch for switching a screwing direction of the pneumatic screwing device includes seats arranged for engaging with locking elements that are slidably associated with the screwing device for maintaining the switch in an operating position corresponding to a desired screwing direction of the device. In order to make the switch more reliable and easier to handle, three seats are provided that are arranged in sequence, the locking elements engaging in the operating position with two of the three seats. | 01-16-2014 |
| 173221000 | With manual means to control motor | 12 |
| 20090008118 | HYDRAULICALLY ACTUABLE HAND TOOL - A hand tool that is preferably hydraulically actuable includes a working head and a body unit that remains in place with respect to the head, drive elements for driving the working head being provided in the body unit, for example a hydraulic pump and a hydraulic supply, a switching movement also allowing a powered movement of one or more working parts of the working head to be triggered and the working head being swivelably connected to the body unit in a rotary connection region. In order to configure and develop a hand tool so that safe working is assured by virtue of unambiguous and clear handling, by swivelling of the body unit relative to the working head about an axis of rotation provided in the region of the rotary connection of the working head to the body unit, switching over can be carried out with regard to the powered movement of the working part. | 01-08-2009 |
| 20120080208 | PNEUMATIC MOTOR AND PNEUMATIC TOOL HAVING THE SAME - A pneumatic motor of the present invention is provided for pneumatic tool. The pneumatic motor includes a cylinder, a rotor and a controlling valve. The rotor is rotatably disposed in the cylinder. Two gas passages and an exhaust hole are defined by the cylinder. The exhaust hole extends along a circular direction of the rotor. The exhaust hole has a first end and a second end. The exhaust hole is partially covered by the controlling valve. The exhaust hole has a remained opened portion which is adapted for air to flow therethrough. The controlling valve is adjustable so as to change position of the opened portion. As such, a power stroke in the cylinder is able to be adjusted, so that the power generated by the pneumatic motor is changeable. | 04-05-2012 |
| 20120138329 | STRUCTURE OF PNEUMATIC IMPACT WRENCH - An improved structure of a pneumatic impact wrench includes a main body, a plastic casing provided for fixing a motor casing and a motor module, the motor module having a cylinder for installing a rotor, the rotor being extended from an axle and supported by a bearing, the motor casing having an external case with a hardness greater than that of the plastic casing, and the external case being hollow and penetrating both ends to form a chamber for accommodating and installing a cylinder, and the external case having a stop ring protruded from an internal wall of the chamber and provided for blocking the cylinder, and an external case cover installed at a rear end of the external case for coupling and covering the external case cover. | 06-07-2012 |
| 20120261154 | STRUCTURE FOR ADJUSTING POSITIVE OR REVERSE ROTATION OF PNEUMATIC TOOL - A structure for adjusting positive or reverse rotation of a pneumatic tool is proposed to be mainly composed of an outer casing, a driving device and a knob. An air controlling part arranged on the outer casing leads air to be transmitted from an air incoming chamber in the outer casing to the driving device through a reducing air intake. A bearing seat is arranged in the driving device. The knob arranged on the outer casing extends with an annular wall for separating air incoming from air discharging. An armature slot formed at the annular wall connects to and communicates with the bearing seat. The annular wall has a protrusion formed with a first air intake allowed to communicate with a positive or reverse air intake. Thereby, the first air intake can adjusted to be aligned with the positive or reverse air intake by rotation of the knob. | 10-18-2012 |
| 20130075123 | FORWARD/REVERSE ROTATION CONTROL DEVICE OF PNEUMATIC TOOL - A forward/reverse rotation device of a pneumatic tool comprising a clutch switch that can be pressed towards the inside of a switching valve to separate a steering switch from its connection with a positioning element, and the steering switch is turned from a side of a handle of the pneumatic tool to the other opposite side, and the clutch switch is bounced to resume its original position by the support of an elastic element, so as to connect the steering switch with the positioning element again. A sleeve portion of the steering switch is coaxially and pivotally installed at a center rod of the clutch switch, and the steering switch is turned between both sides of the handle and maintained to be pivotally turned on the center rod. | 03-28-2013 |
| 20130081843 | Hydraulically Operated Tool Including A Bypass Assembly - A bypass assembly varies the hydraulic motor revolutions per minute (rpm) of a hydraulically driven tool, such as a wrench or a drill. This controls the torque of a driven mechanical mechanism, such as used on an impact wrench. The tool includes a body having a supply channel capable of being connected a source of fluid, a bypass spool channel in fluid communication with the supply channel, and a return channel in fluid communication with the bypass spool channel via a port and in fluid communication with the source. A bypass spool seats in the bypass spool channel. The bypass spool can be rotated to three discrete positions within the bypass spool channel to provide three different settings of revolutions per minute (rpm) of the gear motor. | 04-04-2013 |
| 20130319714 | Pneumatic Driven Wrench - Apneumatic driven wrench comprises: a housing defining a middle channel; a cylinder defining two fluid passages; a rotor; a first valve; a second valve driven by a valve-switching member for controlling fluid communication between the middle channel and a selected one of the fluid passages; a valve-triggering unit for driving the first valve; and a locking member driven by the valve-triggering unit to move between releasing and locking positions. The locking member engages one of the valve-switching member and the second valve when at the locking position. The locking member is disengaged from the one of the valve-switching member and the second valve when at the releasing position. | 12-05-2013 |
| 20140034349 | VARIABLE SPEED CONTROL OF FLUID DRIVEN TOOLS - An apparatus is disclosed that includes a fluid inlet in fluid communication with a valve assembly, the valve assembly structured to selectively permit the flow of a motive fluid from the fluid inlet to a fluid driven motor, and wherein the valve assembly further includes a first plunger and a second plunger, one of the first plunger and the second plunger including a plurality of axially incorporated fluid channels, wherein the plunger including a plurality of axially incorporated fluid channels is structured to be selectively driven by an actuator such that as the plunger including a plurality of axially incorporated fluid channels is axially displaced away from a first position the number of axially incorporated fluid channels in fluid communication with the fluid inlet and the fluid driven motor increases. | 02-06-2014 |
| 20140190719 | DOUBLE-VALVE MECHANISM - A double-valve mechanism and a pneumatic tool including the same are provided. The double-valve mechanism is mounted in a main body of the pneumatic tool. The main body has an exhausting passage and an outlet passage communicating therewith, and an entrance passage and an inlet passage communicating therewith. The double-valve mechanism is operable from outside of the main body to move relative to the main body so as to selectively seal an entry of the inlet passage and an exit of the outlet passage. Whereby, the stop of the tool is effectively ensured after the double-valve mechanism is closed, no gas leakage will occurs, the waste of pressurized air energy and defects of the tool will be avoided, and the rotation of the rotor can be quickly stopped. | 07-10-2014 |
| 20140311764 | PNEUMATIC TOOL - A pneumatic tool includes a main body, a power mechanism, a slave valve, a master control lever and a connecting element. The main body includes a front housing and a back housing. The front housing includes a first accommodating space and is connected with the back housing. The power mechanism is disposed in the first accommodating space. The slave valve is coaxially connected with the power mechanism. The master control lever is disposed at the back housing and includes a first protruding portion and a second protruding portion. The first protruding portion protrudes from a side of the back housing. The second protruding portion opposes to the first protruding portion and protrudes from another side of the back housing. The connecting element is disposed between the master control lever and the slave valve, whereby the slave valve is rotated by a linear motion of the master control lever. | 10-23-2014 |
| 20160075008 | PNEUMATIC ROTARY TOOL WITH AIR-SUPPLY CONTROL ASSEMBLY - A pneumatic rotary tool includes a housing, a directional changeover mechanism, and a speed regulating mechanism. The housing includes a top body and a handle. The top body is fitted with a pneumatic motor. The handle defines a forward air channel, a reverse air channel, and an air supply passage. The air supply passage is controlled by a valve being operated by a trigger so that the air supply passage communicates with the forward and reverse air channels. The direction changeover mechanism is mounted in the top body along a transverse line and passes through the forward and reverse air channels for changing the rotational direction of the pneumatic motor. The speed regulating mechanism is mounted in the handle for adjusting the flow of compressed air entering the forward air channel. The tool can be operated conveniently to change the rotational direction and the output torque of the pneumatic motor. | 03-17-2016 |
| 20160252108 | Controlling Incoming Air for a Multi-Directional Rotational Motor in a Single Rotational Direction | 09-01-2016 |
