| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 254342000 | Drive includes intermeshing gears | 53 |
| 20080277637 | Lifting Mechanism - The invention relates to a lifting mechanism comprising a rotatably mounted drum ( | 11-13-2008 |
| 20090114892 | Cable Drawworks for a Drilling Rig - A cable drawworks for a drilling rig is provided having a three-phase AC electric motor controlled by a variable frequency drive control system. A primary drive transmission consisting of a chain and sprockets connects the motor to a drum shaft that passes through the hub of a cable drum such that the cable drum is rotatably mounted on the drum shaft. The drum shaft connects to a secondary drive transmission, attached to the frame via an oscillating plate assembly, that connects the drum shaft to the cable drum. Each end of the cable drum has a brake drum and a brake band wrapped around thereon. A brake actuating system is used to tighten the bands around each drum during braking conditions and includes an equalization linkage system between the brake bands resulting in equal braking forces being applied to each brake drum. | 05-07-2009 |
| 20090134372 | Integrated Air Compressor and Winch - An integrated air compressor and winch is provided that utilizes a source of rotary motive power for driving both a winch drum and compressor mechanism. The integrated air compressor and winch is preferably provided with a gear case that is operable to provide an appropriate gear reduction for driving the winch drum while providing an appropriate drive speed for operating the compressor. | 05-28-2009 |
| 20090256125 | Winch - The present invention relates to a winch for elevating plant, in particular cranes, cable-operated excavators and similar construction machinery, comprising a hoisting drum, an electric motor for the drive of the hoisting drum which is received in the interior of the hoisting drum as well as power electronics and/or control electronics for the electric motor comprising at least one frequency inverter and/or frequency converter. In accordance with the invention, the power electronics and/or control electronics for the electric motor are received at least partly in the interior of the hoisting drum. Not only short cabling distances are hereby achieved; interference emissions with negative effects on the electromagnetic compatibility are avoided; and voltage overshoots impairing the service life of the inverter and the motor are reduced, but also a particularly compact construction of the winch is achieved. | 10-15-2009 |
| 20110057159 | Cable drive assembly - A dismantable hoist for storing and transporting wire rope and for lowering and raising the wire rope from a building roof site including a lightweight frame having a base, lightweight reel, for storing the wire rope, having a central drum and a pair of spaced-apart peripheral rings attached to the drum forming opposed side flanges rotatably mounted in the frame, drive means removably attached to the drum for rotating the drum for lowering and raising the wire rope, and brake means operatively connected to the spaced-apart peripheral rings and normally biased into braking engagement with the peripheral rings to stop lowering of the wire rope upon release of the brake means. The brake means include a pair of opposed brake shoes pivotably mounted in the frame to engage each of the peripheral rings, biasing means for normally urging each pair of opposed brake shoes towards each other for engaging and braking the peripheral ring therebetween, and a lever pivotably mounted in the frame to operatively engage the brake shoes for disengaging the brake shoes from the peripheral rings upon manually actuating the lever, whereby the drum is released for lowering or raising the wire rope. | 03-10-2011 |
| 20120018689 | Patient Lift Device - A patient lift device comprising: a patient carrier for carrying to a patient to be lifted; a support element sized, shaped and positioned to couple the patient lift device to an upper support; an unmotorized lifting mechanism, operatively connected to the patient carrier and support element so as to raise or lower the patient carrier when the unmotorized lifting mechanism is actuated; and a power tool coupling, operatively connected to the unmotorized lifting mechanism such that when a power tool is coupled to the power tool coupling and actuated, the unmotorized lifting mechanism is actuated, the power tool coupling being configured to detachably mate with a driven power tool head. | 01-26-2012 |
| 20120112145 | ELECTRIC CAPSTAN - An electric capstan that supplies water, and which occupies less space and has a low cost. The electric capstan includes a motor, a reduction gear and a winching roller. The electric capstan further includes a water pump, and the input shaft of the water pump is connected to the output shaft of the motor. | 05-10-2012 |
| 20120286222 | VEHICLE LIFT SYSTEM ACCESSORY - An accessory that assists in operating vehicle lift systems, particularly an accessory that assists in the operation of a crank wheel of a vehicle lift system. The accessory is portable and quickly and easily assembled to the vehicle lift system. The accessory is activated using a power source, for example a cordless power source such as a cordless power drill. The crank wheel is engaged by the accessory and operated to raise and lower the platform component of the vehicle lift system. | 11-15-2012 |
| 20130001489 | MANUAL CHAIN BLOCK - Disclosed is a manual chain block that achieves a more compact overall device and also does not lose the strength of the device itself by means of the position of a reduction gear of a speed reduction mechanism section being able to be positioned closer to the center regardless of the bearing of a load sheave. In the manual chain block, a load sheave ( | 01-03-2013 |
| 20130056694 | GEAR REDUCTION ASSEMBLY AND WINCH INCLUDING GEAR REDUCTION ASSEMBLY - A gear reduction assembly may include a main input shaft, a carrier coupled to the main input shaft, and at least one carrier shaft coupled to the carrier and spaced from the main input shaft. The gear reduction assembly may also include at least one spur gear pair including a first spur gear coupled to the carrier shaft, and a second spur gear, wherein the first and second spur gears are coupled to one another such that they rotate together. The gear reduction assembly also includes a first internal gear engaged with the first spur gear, a second internal gear engaged with the second spur gear, and a hub associated with the first internal gear. The first internal gear has a first number of teeth, the second internal gear has a second number of teeth, and the first and second numbers of teeth differ by from one to five teeth. | 03-07-2013 |
| 20130082225 | CAPSTAN MECHANISM - A capstan mechanism has one base, two location holes, one rotation axis, one driven gear set, one combination driving gear set and one rotation handle. Location holes on the base are needed to be made due to the combined style of the combination driving gear set and the rotation axis, and the hole diameter shall be big enough to let the rotation hole go through it. Thus the concentricity among the parts of the capstan mechanism is realized and the production cost is saved. | 04-04-2013 |
| 20130240811 | ROPE GRIP APPARATUS - Rope grip apparatus for raising or lowering a load has a rope-engaging portion with opposing projections. The opposing projections are arranged to grip a rope by compressing the rope between the projections. In use the rope is fed through the apparatus. | 09-19-2013 |
| 20140001427 | Winch | 01-02-2014 |
| 20140124719 | Horizontal Drum Winch - According to some embodiments, a winch apparatus comprises a winch housing and a winch drum rotationally mounted to the housing. The winch drum is configured to rotate around its vertical axis. The winch drum comprises a slotted keyhole for coupling a winch line to the winch drum. The slotted keyhole comprises an opening at a first end configured to receive the winch line positioned in the slotted keyhole and an opening at a second end configured to retain the winch line. A longitudinal axis of the slotted keyhole is offset from horizontal. | 05-08-2014 |
| 20140353563 | Lifting Assembly - A pull chain moving assembly is designed to impart directional force on an endless-loop pull chain of a chain hoist. The assembly has a housing retaining a chain moving mechanism, which includes a chain pocket wheel and a pair of idler pulley assemblies mounted on opposite sides of the chain pocket wheel and adjacent thereto. Segments of the pull chain are received between the chain pocket wheel and the adjacent idler pulley guide, causing the pull chain to train through the chain moving mechanism. An electric motor rotates the chain pocket guide to facilitate movement of the pull chain and ease of lifting and lowering a load with the chain hoist. | 12-04-2014 |
| 20150014615 | HAND OPERATED PULLING AND LIFTING HOIST - A hand operated pulling and lifting hoist includes: a change gear that engages with a switching pawl fitting provided for an operation lever to convert a manual force applied to the operation lever into a hoist driving force; a fixed support ring disposed for the rotatable mounting of the operation lever about a driving member that is set about the drive shaft to transmit the hoist driving force to the drive shaft; a pivotable support ring formed on the operation lever and rotatably fitted to an internal circumference of the fixed support ring; and a driving-member contact prevention part on the change gear to prevent contact between the pivotable support ring and the driving member. | 01-15-2015 |
| 20150097149 | DRAWWORKS - A drawworks for a drilling device for lowering and hoisting a load such as a drill string or parts thereof includes a frame comprising a first bearing point, a second bearing point, and a third bearing point, a winding drum, and a first bearing device connected to the frame for the winding drum. The first bearing device is arranged so that a center of respective bearing forces is located at each of the first bearing point, at the second bearing point, and at the third bearing point. | 04-09-2015 |
| 20150298946 | CHAIN BLOCK - A chain block is provided including a first frame, a second frame, a wheel cover side structure including a wheel cover which covers the hand wheel and residing on an opposite side of the first frame in a direction away from the second frame, and a gear case side structure including a gear case covering a gear member and residing on an opposite side of the second frame in a direction away from the first frame, and each of the first frame and the second frame is provided with a rolling restriction portion restricting rolling along outer circumferences of the first frame and the second frame in a case of a standing posture in which the first frame and the second frame contact an installation part at the same time. | 10-22-2015 |
| 20160046469 | SYSTEM AND METHOD FOR THERMAL PROTECTION OF AN ELECTRIC WINCH - Monitoring the temperature of the brush of the motor on an electric winch during operation and restricting the operation of the motor within a cooling range in order to minimize downtime and maximize runtime. | 02-18-2016 |
| 20160194184 | WINCH | 07-07-2016 |
| 254343000 | Worm and worm wheel | 1 |
| 20110049450 | Boat Lift Motor Having Spline Shaft - A boat lift motor, comprised of a motor, such motor driving worm gear reducer which, in turn, rotates a tubular drive shaft, such shaft having radial splines running its full length, both outside and inside; wherein the opposite end of the splined tubular drive shaft overlays a spline shaft mounted on the center axle/bolt of a boat winch; wherein the winch is rotated to wind and unwind a cable, rope, cord or chain; and wherein the engagement or disengagement of the power supply to the boat lift is initiated by an electronic controller, which opens and closes a relay upon the user's command, communicated via a handheld remote control or otherwise. | 03-03-2011 |
| 254344000 | Epicyclic gear arrangement including sun, intermediate (e.g., planet), and ring gears | 14 |
| 20100065799 | VARIABLE SPEED WINCH - A variable speed winch in one embodiment includes a drive shaft, a power source, a single gear operation lever, a variable gearing system and a drum. The power source is configured to rotate the drive shaft. The variable gearing system is in rotational connection with the drive shaft and is configured to change the gearing of the winch based on the rotation of the single gear operation lever. The drum is in rotational connection with the variable gearing system. | 03-18-2010 |
| 20110180770 | Light Weight Winch - A winch includes a rotatable drum. A cable is wound onto the drum in one rotative direction and off the drum in a second rotative direction. A sealed axial flux permanent magnet drive motor includes a drive shaft selectively rotated by the motor in either direction of rotation. A gear train interconnects the drive shaft and the drum for rotatably driving the drum at a reduced rotative speed relative to the motor shaft. The motor can apply regenerative braking. A spring-applied electric release brake is connected to the drive shaft to apply a braking force to prevent rotation of the drum. A connecting shaft connects the gear train to the rotatable drum. The connecting shaft includes axially spaced splines that reduce the disparity in the gear train and drum centerlines to thereby reduce gyration therebetween. The drum can be made partially from carbon fiber to reduce the weight thereof. | 07-28-2011 |
| 20110215285 | GAS POWERED SELF CONTAINED PORTABLE WINCH - The invention is directed to a gas powered self-contained winch comprising an external casing including a first side wall, a second side wall, a top wall, a bottom wall and a stabilizing bar. The invention includes a combustion engine; a transmission assembly, a gear assembly and a clutch assembly that connect to a spool capable of winding and unwinding a cable wire. A hand controller can communicate with the clutch assembly through a cable wire sufficient to control the winding and unwinding of the cable. | 09-08-2011 |
| 20110278521 | TWO SPEED WINCH ASSEMBLY - Apparatus for a two speed winch assembly are described herein. The winch assembly may be secured to a towing trailer and is arranged to assist in loading and unloading cargo from the trailer. The winch assembly may include mechanisms, systems, and features to make the winch assembly easy to assemble and use, increase the service life of the winch assembly, and improve the consistency of the performance of the winch assembly. | 11-17-2011 |
| 20130200319 | HOIST WITH BUILT-IN LOAD SENSITIVE AUTOMATIC SPEED CHANGE DEVICE - A hoist with built-in load sensitive automatic speed change device includes: a high-torque input member coupled to a hand wheel, a magnetic clutch coupled via a speed-increasing mechanism and configured to transmit a low load, and an output transmitting means configured to transmit a rotational operating force of the hand wheel to mechanical brakes via the high-torque input member or magnetic clutch, wherein the hand wheel is axially supported by a drive member coupled to the output transmitting means of the mechanical brakes and rotated thereby, the magnetic clutch is arranged between the speed-increasing mechanism and the hand wheel, the hand wheel and the speed-increasing mechanism are coupled by a hollow input member provided so as to cover the outer periphery of the magnetic clutch, the output transmitting means is fitted onto a boss portion of the drive member so as to allow torque transmission to the boss portion. | 08-08-2013 |
| 20130313495 | CAPSTAN COMPRISING MEANS FOR ASSESSING THE TENSION OF A LINE WOUND AROUND IT AND MEANS FOR THE AUTOMATIC SELECTION OF AT LEAST ONE SPEED AS A FUNCTION OF SAID TENSION. - A capstan is provided for being secured to a sailing craft in order to tension a line attached to a sail. The capstan includes a fixed base housing a shaft and a gearbox, a barrel around which the line can be wound, the barrel being mounted such that it is capable of rotating in just one direction around the base and connected to the shaft via the gearbox. The rotation of the shaft is accompanied by rotating of the barrel about the base. The capstan includes elements for assessing the tension in the line and for selecting at least one speed when the tension exceeds a predetermined threshold. The gearbox includes an interior annulus, the annulus being mounted such that it can rotate inside the barrel against the effect of elements that apply a friction and/or elastic return force to the annulus so that it can turn in relation to the barrel when the tension is above the threshold. | 11-28-2013 |
| 20140084229 | GAS POWERED SELF CONTAINED PORTABLE WINCH - A gas powered self-contained winch includes a combustion engine, a transmission assembly, a gear assembly and a clutch assembly connect to a spool capable of winding and unwinding a cable wire using forward and reverse drives. A hand controller communicates with the clutch assembly through a cable wire sufficient to control the winding and unwinding of the cable. Securing the winch for operation includes placing its center of gravity below the force line. A field changeable capstan option and remote control handle with throttle, power out lever, and kill switch are built in. A field installable hook float is provided for water rescue operations. | 03-27-2014 |
| 20140252286 | Remote Winch Clutch System - A winch is provided including a rotatable drum and a gear train drivingly connecting a motor to the rotatable drum. The gear train includes a clutch that is operable to be disengaged to allow the rotatable drum to free spool. A clutch actuator is provided for disengaging the clutch and the clutch includes a pivoting pawl having a first end that engages a clutch dog of a planetary ring gear and the clutch actuator includes an electro-magnetic solenoid having a plunger that engages a second end of the pivoting pawl. | 09-11-2014 |
| 20140264210 | Pulling Tool - A pulling tool is provided with a rotatable drum having a cable wound thereon. A motor is drivingly connected to the rotatable drum and the rotatable drum and motor are disposed within a unique housing structure. The rotatable drum is driven by a planetary gear system that is disposed within the rotatable drum to provide a compact assembly. A belt and pulley system is provided for delivering torque from the motor to the planetary gear system. The rotatable drum is provided with a two-piece stepped construction that allows the planetary gear system to be assembled within the drum and allows for the initial wraps of a cable around the smaller diameter portion of the stepped drum. | 09-18-2014 |
| 20140264211 | Pulling Tool - A pulling tool is provided with a rotatable drum having a cable wound thereon. A motor is drivingly connected to the rotatable drum and the rotatable drum and motor are disposed within a unique housing structure. The rotatable drum is driven by a planetary gear system that is disposed within the rotatable drum to provide a compact assembly. A belt and pulley system is provided for delivering torque from the motor to the planetary gear system. The rotatable drum is provided with a two-piece stepped construction that allows the planetary gear system to be assembled within the drum and allows for the initial wraps of a cable around the smaller diameter portion of the stepped drum. | 09-18-2014 |
| 20160130121 | SELF-ENGAGING CLUTCH - An improved self-engaging clutch having a carrier plate with one or more clutch actuator fingers formed into the carrier plate. | 05-12-2016 |
| 20160159626 | Free-Fall Winch With A Service and Holding Brake - A winch is provided that includes a frame and a winch drum mounted for rotation relative to the frame; a gearing via which the winch drum can be rotated by a drive motor attached to the winch, wherein the gearing includes a gear shaft; a first brake that includes a first brake body and a second brake body which is non-rotationally connected to the gear shaft. The first and second brake bodies can be pressed against each other in order to achieve a braking effect based on frictional engagement. A second brake is also provided that includes a third brake body and a fourth brake body which is non-rotationally connected to the gear shaft and/or the second brake body. The third and fourth brake bodies can be pressed against each other in order to achieve a braking effect based on frictional engagement. | 06-09-2016 |
| 20160167935 | WINCH | 06-16-2016 |
| 20160176687 | REMOTE WINCH CLUTCH SYSTEM | 06-23-2016 |
| 254345000 | Shiftable into and out of intermeshing engagement | 3 |
| 20100044660 | WINCH - Ship's winch including a frame which can be attached to a vessel and on which the cable drum and the motor driving the cable drum are provided. Adjacent to the cable drum, a slipping clutch is provided and between slipping clutch and the motor, a freewheel mechanism is provided which works towards the frame. The slipping clutch is embodied not to transmit further load to the freewheel mechanism or motor, respectively, in case of a certain overload caused by tension in the towing cable. In addition, by positioning the freewheel mechanism/clutch in this manner, the motor output for pulling in a certain load under greatly varying stresses can be reduced. | 02-25-2010 |
| 20100193755 | RAIL HANDBRAKE WITH PROLONGED RELEASE - A hand brake actuator for a rail car has a rotary input connected to a rotary output by a transmission including a clutch and a ratchet wheel and pawl, a declutching mechanism for disengaging the clutch in a declutched position of the declutching mechanism, and a release handle with a first cam which drives the declutching mechanism to the declutched position when the release handle is moved from an apply position to a release position. A second cam is biased in a first direction to engage and retain the declutching mechanism in a declutched position after the release handle is removed from the release position. A follower is connected to the second cam and is responsive to the rotation of the input in an apply direction to rotate the second cam in a second direction opposite the first direction to release the declutching mechanism and allow the clutch to reengage. | 08-05-2010 |
| 20150321889 | GEAR REDUCTION ASSEMBLY AND WINCH INCLUDING GEAR REDUCTION ASSEMBLY - A gear reduction assembly may include a main input shaft, a carrier coupled to the main input shaft, and at least one carrier shaft coupled to the carrier and spaced from the main input shaft. The gear reduction assembly may also include at least one spur gear pair including a first spur gear coupled to the carrier shaft, and a second spur gear, wherein the first and second spur gears are coupled to one another such that they rotate together. The gear reduction assembly also includes a first internal gear engaged with the first spur gear, a second internal gear engaged with the second spur gear, and a hub associated with the first internal gear. The first internal gear has a first number of teeth, the second internal gear has a second number of teeth, and the first and second numbers of teeth differ by from one to five teeth. | 11-12-2015 |
| 254346000 | Drive also includes clutch mechanism having coaxial, rotatable relatively shiftable axially, power transmitting components | 2 |
| 20090032787 | Hoisting and pulling device - A hoisting and pulling device including a main body frame | 02-05-2009 |
| 20100127228 | PLANE BRAKING DEVICE FOR ELECTRIC WINCHES AND ELECTRIC WINCH - The present invention discloses a plane braking device for electric winches and electric winch which disposes a section of hollow gear shaft, a section of core shaft, a fixing ring, a wedge shape support, a stopping piece, a braking plate, an elastic element, a wedge shape piece B, a wedge shape piece A, a braking clutch base and so on in a gear box of an electric winch. When a motor works, the section of core shaft of the motor drives the braking clutch base and the wedge shape pieces A, B to rotate, until a gap is formed between the adjacent braking plate and stopping piece between the braking clutch base and the wedge shape piece B, so that the braking effect disappears. When the motor stops suddenly, a heavy load lifted by a tight wire drum provides a reverse pulling force so that the wedge shape piece B produces a reverse thrust force to push the friction planes of the braking plate and the stopping piece, so the plane braking effect is achieved quickly. Based on the plane braking plate, the present invention can increase the braking area and the braking force and achieve safe braking. Furthermore, when there is wear of parts in long usage, so it only needs to replace the braking plate made of friction materials, which can simplify maintenance, reduce the parts costs and ensure service life of the gear box. | 05-27-2010 |
| 254352000 | Drive also includes ratchet wheel and driving pawl | 6 |
| 20100283021 | Ratcheted lift mechanism - The present invention is related generally to hoists, and more particularly to a hoist system for safely raising, storing, and lowering loads. | 11-11-2010 |
| 20110253958 | Winch Assembly - The present invention is directed to apparatus for a winch assembly. The winch assembly may be secured to a towing trailer and arranged to assist in loading and unloading cargo from the trailer. The winch assembly may include mechanisms, systems, and features to make the winch assembly easy to assemble and use, increase the service life of the winch assembly, and improve the consistency of the performance of the winch assembly. Embodiments of a winch assembly disclosed include novel drive systems, novel ratchet and pawl systems, novel systems for guiding a winch strap, novel systems for securing the winch assembly to a towing trailer, and a novel frame member for a winch assembly. | 10-20-2011 |
| 20120068132 | Manual Marine Winch With Self Releasing Handle - A manual marine winch comprising a winch housing, rotating drum assembly supported on the housing, and a manually actuated control for spooling and un-spooling a winch line on the drum, wherein the control includes a self-releasing handle for selectively tensioning the drum. handle includes i) a ratchet gear coupled to the drum ii) a rotating handle body with a manual end grip, iii) a user engaged trigger mechanism moveable between an engaged and release position, and iv) a handle locking pawl on the body coupled to the trigger mechanism and moveable between a position engaged with the gear rotationally securing the body to the gear and drum when the trigger is in the engaged position and a position disengaged with the gear rotationally separating the body from the gear and drum when the trigger is not in the engaged position. | 03-22-2012 |
| 20130306924 | MANUAL MARINE WINCH WITH SAFETY KNOCKOUT OVERRIDE PREVENTING RELEASE OF WINCH TENSION WITHOUT THE HANDLE IN THE STOWED POSITION - A manual marine winch includes a safety knockout override preventing release of winch tension without the handle in stowed position. The winch includes a housing; a rotating drum on the housing; a winch line on the drum; a control for spooling and un-spooling the winch line on the drum, wherein the control includes a handle for selectively tensioning the drum and moveable between a position engaged with the drum and a disengaged stowed position; a tension holding mechanism on the housing comprising a ratchet gear coupled to the drum, a pawl selectively engaged with the ratchet gear, and a knockout configures to selectively disengage the pawl from the gear to allow for release of winch tension; and a safety knockout override coupled to the housing and selectively engaged by the handle and configured to prevent release of winch tension when the handle is not in the stowed position. | 11-21-2013 |
| 20160145083 | Lifting Arrangement - The invention discloses a lifting arrangement, which includes a base supporting structure adapted to be placed firmly on supporting ground; and a ratchet system adapted to be supported by the base supporting structure, and being adapted to assist in lifting a motorcycle and/or quad-bike. The motorcycle and/or quad-bike is adapted to be lifted to enable repairs to be done to the motorcycle and/or quad-bike. The ratchet is operated by means of downward pressure and/or force. | 05-26-2016 |
| 254353000 | Plural driving pawls | 1 |
| 254354000 | Attached to rotatable disk or shaft | 1 |
| 20090108245 | Door release mechanism - A door hoist includes a bracket, drive sprocket, ring gear, hub assembly, set of planetary gears, and governor shaft. The drive sprocket has a drive sprocket axis. The ring gear is fastened to the drive sprocket. The ring gear has a ring gear axis that is in alignment with the drive sprocket axis. The hub assembly includes a connector to receive a door drive shaft and secure the door drive shaft in a fixed rotational alignment with the hub assembly. The set of planetary gears is rotationally mounted to the hub assembly. The set of planetary gears is configured to mate with the ring gear. The governor shaft includes a sun gear, brake assembly, and link. The sun gear is configured to mate with the set of planetary gears. The brake assembly has an engaged position and a disengaged position. The sun gear is rotationally fixed relative to the bracket in response to the brake assembly being in the engaged position. In response to the brake assembly being in the disengaged position, rotation of the sun gear is unfixed relative to the bracket. The link secures the brake assembly in the engaged position. The link is configured to melt in response to an ambient temperature exceeding a predetermined temperature. | 04-30-2009 |
| 254356000 | With means for preventing or retarding rotation of drum in at least one direction | 7 |
| 20100038610 | DRAWWORKS HAVING ANNULUS ROTATING UNION WITH BRAKE COOLING SYSTEM - A drawworks having a drum spool, a drum shaft concentrically supported by the drum spool, a rotary union, brake assemblies and a brake cooling system which circulates a cooling fluid through the brake assemblies to thereby reduce the operating temperature of the brake assemblies. The brake cooling system includes a cooling fluid passage that extends through the drum spool, the rotary union and the brake assemblies. | 02-18-2010 |
| 20100102288 | WINCH AND BRAKING DEVICE THEREOF - A braking device for a winch comprises a braking bush, a brake driving shaft having one end connected to an output shaft of the motor and another end of the brake driving shaft having a first axial protrusion. A brake driven shaft defines an end rotatably disposed in the braking bush and having a second axial protrusion opposed to the first axial protrusion. A brake shoe is disposed between the first axial protrusion and the second axial protrusion. An elastic member is connected to the second axial protrusion and the brake shoe and normally urges the brake shoe toward the first axial protrusion. A winch having the braking device is also disclosed. | 04-29-2010 |
| 20100127229 | Drawworks - A drawworks ( | 05-27-2010 |
| 20140239243 | WINCH ASSEMBLY - A winch assembly is described and shown herein. The winch assembly may include a first housing member having a first retaining member formed therein and a second housing member having a second retaining member formed therein, the second housing member secured to the first housing member forming a winch housing. The winch assembly may further include a drive system generally positioned within the winch housing, and a winch drum operatively coupled with the drive system and rotationally secured with the first and second retaining members. | 08-28-2014 |
| 20150028275 | ELECTROMECHANICAL APPARATUS FOR EVACUATING BUILDINGS IN THE EVENT OF A FIRE - An electromechanical apparatus for evacuating buildings in the event of a fire includes a reel that has, rolled up on it, a mooring cable that longitudinally passes through the inside of a rigid tube, ending in an evacuation harness, where an individual will be secured. The weight of the individual makes it possible to rock the tube and a lever that has a braking disc and which acts on a brake disc that allows, by means of a mechanical transmission system, the braking and/or retention of the reel and consequently the descent of the individual. There is a radio-control unit and a standalone electric and electronic safety system that is activated when the speed of descent of the individual is too great. The apparatus allows evacuation and can be reused, once used. The apparatus carries away, brakes, retains and evacuates the individual making use of the electromechanical apparatus. | 01-29-2015 |
| 20160101969 | DRIVE TRAIN FOR HOISTING GEAR - A drive train is provided for hoisting gears, and in particular for hazardous transports. The drive train includes a drive motor ( | 04-14-2016 |
| 254357000 | Ratchet wheel or formation and locking pawl | 1 |
| 20100148139 | WINCH ASSEMBLY - The present invention is directed to apparatus for a winch assembly. The winch assembly may be secured to a towing trailer and arranged to assist in loading and unloading cargo from the trailer. The winch assembly may include mechanisms, systems, and features to make the winch assembly easy to assemble and use, increase the service life of the winch assembly, and improve the consistency of the performance of the winch assembly. Embodiments of a winch assembly disclosed include novel drive systems, novel ratchet and pawl systems, novel systems for guiding a winch strap, novel systems for securing the winch assembly to a towing trailer, and a novel frame member for a winch assembly. | 06-17-2010 |
