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| Number | Title | Issue Date |
| 8079569 | 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 t... | 12/20/2011 |
| 7984894 | Electrical clutch engagement/disengagement apparatus A clutch operable with equipment, including a winch of the type having a planetary gear reduction assembly for driving a cable drum. The planetary gear assembly includes a ring gear which, when allowed to rotate, effectively disconnects the drive motor from the cabl... | 07/26/2011 |
| 7922153 | 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 wi... | 04/12/2011 |
| 7789375 | Portable winch assembly actuated by auxiliary handheld torquing device Provided are a portable winch assembly for use in lifting equipment and a planetary reduction gearbox that may be incorporated into existing winch assemblies. The planetary reduction gearbox of the winch assembly includes a primary sun gear, a first plurality of pla... | 09/07/2010 |
| 7703751 | Winch assembly including clutch mechanism A winch assembly includes a housing member, a drum rotatably coupled to the housing member, a drive shaft extending through the drum and into the housing member, a gear train located within the housing member, and an actuation mechanism. The gear train includes a su... | 04/27/2010 |
| 7658370 | Rope winch A rope winch has at least one bearing support and a rope drum supported on the at least one bearing support so as to be rotatable about a drive axis. A drive motor and a gear connected to the drive motor are provided, wherein the drive motor drives the rope drum abo... | 02/09/2010 |
| 7648125 | Winch clutch assembly The present invention is a winch clutch assembly, where the deceleration mechanism of the winch contains an additional second internal gear ring, and its outer annular wall is provided with multiple equally distanced fitting indents. The clutch assembly, external to... | 01/19/2010 |
| 7614609 | Winch A winch including a drum, a motor and a power transmission device. The power transmission device includes a casing and a planetary mechanism assembly having first and second planetary carriers rotatably disposed in the casing; first to third planetary gears rotatabl... | 11/10/2009 |
| 7527245 | Electric drawworks for a drilling rig A cable drawworks for a drilling rig has an electric motor and a primary drive transmission which connects the motor to a drum shaft that passes through the hub of a cable drum. The drum shaft is rotatably mounted on the drawworks frame whereas the cable drum is rot... | 05/05/2009 |
| 7370454 | Door skin, method of manufacturing a door produced therewith, and door produced therefrom A door skin comprises an exterior side and an interior side for being secured to a frame member. First and second molded, spaced stiles lie on a first plane. A flat planar portion is disposed between the stiles and lies on a second plane spaced from the first plane.... | 05/13/2008 |
| 7354370 | Drive system for regulating devices in motor vehicles A drive system for regulating devices in motor vehicles comprising a housing containing a drive element of the regulating device, a disk armature motor provided with an armature disk, and a planet wheel transmission. The planet wheel transmission comprises an intern... | 04/08/2008 |
| 7350771 | Gear for electrically/hydraulically and manually driven sheet winches By modern gears for electric/hydraulic and manually driven sheet winches, demands are made on the presence of a free-wheeling mechanism (24) in case that the drive unit fails, and it is also desirable that the gear takes up as little space as possible, irresp... | 04/01/2008 |
| 7311298 | Integrated air compressor and winch An integrated air compressor and winch is provided that utilizes a single 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 provid... | 12/25/2007 |
| 7267026 | Bicycle control device A bicycle control device is disclosed having a control lever that is operable in a first direction to operate the brake control mechanism, a second direction to operate the shift control mechanism in the pulling direction and a third direction to operate the shift c... | 09/11/2007 |
| 7261277 | Winches A winch assembly (38) comprising a winch (10) having a winch spool (23), an hydraulic drive motor (15), a clutch (17) for directly coupling the drive motor (15) to the winch spool (23) to effect rotation of the winch ... | 08/28/2007 |
| 7222700 | Roller disk brake for a winch A brake mechanism having a motor output shaft outputting a driving torque in a power-in and a power-out direction. A camming device operably couples the output shaft to a drive shaft for fixed rotation. A one-way clutch operably couples the drive shaft and a brake d... | 05/29/2007 |
| 7185881 | Electric winch Apparatus and methods for operating a winch system comprising a wire spooled onto a drum rotatably mounted to a shaft. A permanent magnet is mounted to the drum such that, when an electric current is applied to a coiled winding mounted to the shaft, the drum rotates... | 03/06/2007 |
| 7165653 | Elevator gearless traction machine construction A flexible construction for an elevator gearless traction drive machine having a frame that is easily adaptable to traction sheaves of differing widths and diameters while providing the necessary stability for the drive components without an additional structure. Th... | 01/23/2007 |
| 7114705 | Grab-activated self-locking winch handle A lock/release mechanism for the crank handle of a winch consists of a set of one or more pins that are captured within the drive head of the handle. Within the drive head is an actuation rod, which acts on these pins. Depending on the position of the rod, the pins ... | 10/03/2006 |
| 7097157 | Modular adjustable hoist A modular adjustable hoist has a winch and a cable for hoisting an object. An electric motor is coupled to the winch for winding and unwinding the cable. An adjustable frame is used for securing the winch to a support or in a free standing position. The support can ... | 08/29/2006 |
| 7055805 | Self-tailing winch conversion A self tailing conversion is provided for a standard winch or capstan, particularly a sailboat winch. In one embodiment a self tailer or rope jaw device is secured to the top of the winch drum, and a feeder arm is attached to the stationary center stem of the existi... | 06/06/2006 |
| 7000904 | Cable winch structure A cable winch structure for vehicles is disclosed. The cable winch includes a rolling cylinder connected to a speed-reducing device at one lateral side, and having a motor connected to one end of the roller cylinder so that the speed reducing motor transmits the pow... | 02/21/2006 |
| 6971278 | Manual multi-ratio tension-applying device A tension applying device including a housing in which are mounted a primary shaft, a main shaft, a pinion shaft, and a load-member sheave shaft. A ratchet handle is associated with the primary shaft for imparting rotation thereto when pumped by a user. Rotation of ... | 12/06/2005 |
| 6966544 | Hoist apparatus The invention relates to a hoist apparatus including at least one of a three-part double reeved bottom block that has the same height profile as a two-part bottom block and the same lifting capacity as a three-part bottom block that includes an integral equalizer sh... | 11/22/2005 |
| 6966545 | Chain block A chain block with a drive motor (2) with a motor shaft (11), which is connected at the take-off side via a slip clutch (50) to a transmission input shaft (14), having a first gear (18a) and mounted in a housing (1) b... | 11/22/2005 |
| 6916267 | Method and apparatus for selective engagement and disengagement of a ring gear of a gear set Apparatus for the selective engagement and disengagement of a ring gear of a gear set in which an actuator can be displaced between a first position engaging the ring gear and a second position disengaged from the ring gear selectively by a manually operable mechani... | 07/12/2005 |
| 6688582 | Force balancing device for a hoist with two traction cables and hoist fitted with such device The invention concerns a load balancing device consisting of a planetary or trochoidal mechanical differential speed reducer, arranged on a winch comprising two drums and enabling to balance the torque exerted on the drums. Thus, if a cable is improperly ... | 02/10/2004 |
| 6686629 | SOI MOSFETS exhibiting reduced floating-body effects Disadvantages of the floating body of a SOI MOSFET are addressed by providing a pocket halo implant of indium beneath the gate and in the channel region of the semiconductor SOI layer of the MOSFET. Also provided is the method for fabricating the device.... | 02/03/2004 |
| 6663086 | Structure of a cable winch used in vehicle An improved structure of a cable winch used in vehicle is disclosed. The present cable winch provides the user to turn the control button to position a protruded peg at the top edge of the through hole of the gear box, and the control button will pull the... | 12/16/2003 |
| 6659430 | Winch having internal clutch mechanism A winch comprises a drum rotatably mounted on a housing for winding a cable thereupon. A motor is attached to the housing, the motor supplying torque through a motor shaft. A special stage of planetary gears is mounted to the housing for transmitting torq... | 12/09/2003 |
| 6631886 | Winch housing with integral fairlead A winch constructed with a fairlead frame providing a mounting base for the winch and providing a rotational support for a cable drum. Loads exerted on a cable and through the fairlead rollers and cable drum are transferred to the unitary fairlead frame m... | 10/14/2003 |
| 6631816 | Hoist Drums each having an independent drive source is installed on a trolley and each of the drums has a lifting rope which is wound around it and has an unwound end locked on a suspension piece, which will suppress any need to design the lifting rope in longe... | 10/14/2003 |
| 6629905 | Drive for adjustment devices in motor vehicles The invention relates to a drive for adjustment devices in motor vehicles, especially for a window lift. Said drive comprises a motor and a toothed gearing coupled with said motor, said toothed gearing being mounted in an at least two-piece housing and be... | 10/07/2003 |
| 6604731 | Utility winch A utility winch having a single planet gear assembly that commonly engages adjacent ring gears, one ring gear fixed and the other rotatable. The planet gears of the planet assembly have inner and outer portions that rotate together and have different diam... | 08/12/2003 |
| 6588731 | Hoisting and towing device In a hoisting/pulling device comprising a pinion gear 4, reduction gears 5a which are meshed with the pinion gear 4 and are rotatably mounted in a frame 1, and a load sheave which is interlocked with reduction gears 5b and is rotatably mounted in a frame ... | 07/08/2003 |
| 6557828 | Pneumatic motor and pneumatic hoist apparatus installed with the same A pneumatic motor is provided with twin cylinders each with a piston installed therein slidably, disposed horizontally adjacent in a direction parallel to axis of a motor shaft interposed between the twin cylinders and arranged in a direction intersecting... | 05/06/2003 |
| 6497380 | Drum winding apparatus In a drum winding unit, a cylindrical drum winding a wire is supported by paired supports fixed to a base structure so the drum freely rotates about a central axis of the drum. A drive unit for rotating the drum is disposed inside the drum. The drive unit... | 12/24/2002 |
| 6126143 | Hoisting winch for lifting and lowering In a hoisting winch, a winding drum is arranged in an outer peripheral portion of a motor portion, a braking unit and an encoder are arranged on one end side of a rotor axis of the motor portion, an internal gear is fitted to an inner diameter area of the... | 10/03/2000 |
| 6042086 | Multi-speed winch having epicyclic gear drive A winch having one orbital gear or one set of orbital gears to transmit drive from a drive shaft to a drum in which the orbital gear or a gear of the set of orbital gears transmits drive to the drum at different drive ratios from the drive shaft in accord... | 03/28/2000 |
| 6029952 | Multi-speed winch having speed selection mechanism A single mechanism mounted at the head of a winch has a double-selector function, allowing either 1st or 2nd ratio of drive to a drum to be selected upon initial rotation of the drive shaft. The mechanism is mounted coaxially with the drum and shaft and h... | 02/29/2000 |
