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| Number | Title | Issue Date |
| 7946559 | 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... | 05/24/2011 |
| 7866633 | External mounted brake for a driving disk The invention relates to an electromagnetically ventilating spring-pressure brake for mounting on the driving disk (15) or the driving disk shaft (16) of already existing elevators, which are operated with cables passing over a driving disk. The extern... | 01/11/2011 |
| 7780147 | 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 bra... | 08/24/2010 |
| 7309060 | Wire pulling device The present invention is a portable wire pulling device that receives and utilizes the rotational power and control features and functions of a cordless, battery-operated electric hand drill to selectively drive a rotatable reel of the portable wire pulling device w... | 12/18/2007 |
| 7303183 | Safety brake mechanism for a winding drum and method for grinding a safety brake The invention concerns a safety brake mechanism for the winding drum (8) of a hoisting machine that can be driven via a motor (4) with lifting gearbox (3), which is substantially braked to a standstill without jerking when the lowering speed is ... | 12/04/2007 |
| 7281612 | Brake structure for a roll-up door A brake structure for a roll-up door includes a brake drum fixed to a transmission shaft of a speed reducer. The brake drum receives a pair of brake shoes in opposite inner sides thereof. The brake shoes are pivotably connected to each other at an end of each brake ... | 10/16/2007 |
| 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 |
| 7159851 | Apparatus for deploying and retrieving water sampler An apparatus includes a bi-directional DC motor; a gear reducer connected to the DC motor; a pulley mounted on an output of the gear reducer; an anti-back drive brake mounted on the output of the gear reducer; a reel wound with cable; a second pulley attached to the... | 01/09/2007 |
| 7159852 | Manual marine winch internal gearing A manual swivel winch of the present invention includes internal drum gearing. The winch has a pair of spaced side plates, a rotating drum supported between the side plates, an internal drum gear coaxially mounted with the rotating drum, and a pinion drive gear enga... | 01/09/2007 |
| 7128307 | Manual marine winch with compound handle A manual swivel winch includes safe loading mechanism. The winch has a pair of spaced side plates, a rotating drum supported between the side plates, a drum gear coaxially mounted with the rotating drum, a pinion drive gear engaging and rotating the drum gear, and a... | 10/31/2006 |
| 7118095 | Lifting reel mounted on a tree stand A device is provided for lifting and lowering objects to and from a deployed tree stand by an occupant of the tree stand. The device has a clamp connectable to a rigid support member of the stand, a threaded shaft connected to the clamp, a reel mounted on the shaft,... | 10/10/2006 |
| 7086622 | Fishing reel winding arm adapter for winding a fishing line This invention relates to an article of manufacture, and specifically to a fishing reel winding arm adapter for winding line onto a fishing reel spool using a high-carbon plastic cylindrical body with an attached drive member that allows an electric screwdriver to b... | 08/08/2006 |
| 7007927 | Arborist limb lowering method An apparatus for the controlled lowering to the ground of a cut portion of a tree includes a rope and an anchor having an arrangement of guiding protuberances., each guiding protuberance including a bearing surface frictionally engaging and redirecting the rope with... | 03/07/2006 |
| 6371248 | Drive unit for elevators A drive unit has a traction sheave mounted on an end of a drive shaft supported by a bearing that is mounted on an extension of a bearing plate that is part of the motor casing. The traction sheave has an extension that serves as a brake drum. Mounted bet... | 04/16/2002 |
| 6182945 | Redundant drawworks A fully redundant drawworks is provided with two complete and totally independent systems for controlling and powering the drum and drum shaft of the drawworks. Each system broadly comprises at least one source of power (e.g., a motor or engine), a power ... | 02/06/2001 |
| 5944150 | Hoist gear with a brake A brake for a hoist gear is provided with a pair of brake shoes for braking a disk to be braked arranged on a winding drum side by pressing both sides of the disk. Floating pin fitting piece portions protrude integrally from a body of a bearing supporting... | 08/31/1999 |
| 5860635 | Winch having hydraulic speed control and planetary gear system A new and useful winch comprising a cable drum; a motor operatively connected to drive a cable drum; a fall arrestor operatively connected to a cable drum and having no power input requirement and a gear reduction group through which a motor and fall arre... | 01/19/1999 |
| 5803437 | Chainless drive winch A chainless drive winch is provided having a cable cylinder meshing with an orthogonal, cylindrical reduction gearing member. The reduction gearing member may be driven by, for example, an electric motor. A brake is provided operable only when the reducti... | 09/08/1998 |
| 5697599 | Winch device operable by 12 volt battery current A winch device which may be truck-mounted and operated by the truck's 12 volt electrical system utilizes an automotive starting motor that interacts with a large diameter disc-like gear. A brake drum and a winch drum are coaxially associated with one face... | 12/16/1997 |
| 5647577 | Brake apparatus for an extendable lift apparatus A braking mechanism for a winch. The braking mechanism includes a sleeve disposed on a motor shaft. The sleeve has slots at intervals which match and align with the slots in the shaft. The sleeve and the shaft are synchronized by a knob that engages the s... | 07/15/1997 |
| 5607143 | Tree stand winch apparatus and method A tree stand winch (10) for hoisting items from ground level up to a desired height within a tree or pole comprising a crank wheel (12) having both a hand knob (14) and a power tool adapter (16) mounted thereto for actuating a gear assembly (20). Crank wh... | 03/04/1997 |
| 5603489 | Tree stand winch apparatus and method A tree stand winch (10) for hoisting items from ground level up to a desired height within a tree or pole comprising a crank wheel (12) having both a hand knob (14) and a power tool adapter (16) mounted thereto for actuating a gear assembly (20). Crank wh... | 02/18/1997 |
| 5556077 | Air lifting and balancing unit An air lifting and balancing unit including a cylinder, a piston in the cylinder, a ball screw affixed to the piston, a ball nut mounted for rotation on the ball screw, a drum mounted on the ball nut, a chain driven by the drum, and centrifugally actuated... | 09/17/1996 |
| 5482255 | Winch having heat dissipating braking A winch wherein braking is achieved by cam actuation, the cam actuation, in a static condition, frictionally interlocking the drive shaft to the cable drum. A gear reduction mechanism is provided between the shaft and drum and is prevented by such interlo... | 01/09/1996 |
| 5458318 | Drum brake A safety mechanism for preventing a cable drum to rotate with overspeed has parallel ratchet wheels which encircle a brake drum. At a periphery of the ratchet wheels are stopping slots wherein a latching pawl is inserted when an overspeed is detected. The... | 10/17/1995 |
| 5439200 | Air lifting and balancing unit An air lifting and balancing unit including a cylinder, a piston in the cylinder, a ball screw affixed to the piston, a ball nut mounted for rotation on the ball screw, a drum mounted on the ball nut, a chain driven by the drum, and centrifugally actuated... | 08/08/1995 |
| 5415377 | Sheave assembly for a tire lift/carrier winch A two-piece sheave assembly is provided for a tire lift/carrier winch. The sheave assembly includes a molded plastic, one-piece sheave component that is molded to include a first sheave side plate, an integral sheave center hub with a cable-wrapping track... | 05/16/1995 |
| 5398923 | One-way winch brake A power operated drive shaft and brake assembly are coaxially mounted for rotation inside a cable drum which is coupled to the drive shaft through gearing. The brake assembly has an adapter housing and one-way clutch for drivingly connecting the drive sha... | 03/21/1995 |
| 5374035 | Winch with power train, manual operation option, and particular brake assembly A winch includes a reversible electrical motor with output shaft which drives a drum through a drive mechanism with multiple sprockets and gears to take up and let out a cable. The output shaft is connected through a one-way bearing to a brake hub. The br... | 12/20/1994 |
| 5342020 | Speed controller for drilling rig traveling block A controller for a drilling rig traveling block is disclosed utilizing an absolute position locator and a processor for employing various operating fixed and variable parameters for controlling the speed of travel of the traveling block. As approach limit... | 08/30/1994 |
| 5018603 | Elevator hoist apparatus A hoist apparatus comprising a stationary shaft supported by a support, and a sheave having a cavity with a side opening detachably, and rotatably, mounted on the shaft. A motor stator assembly is mounted on the support member and extends into the inner s... | 05/28/1991 |
| 4938454 | Chain hoist with automatic brake and double chain hooks A pair of axially aligned input and output shafts are jornalled from a frame supporting a brake drum about the output shaft and the output shaft mounts two pairs of diametrically opposite brake shoes therefrom spring biased into friction braking relation ... | 07/03/1990 |
| 4926973 | Mobile wheelchair lift and brakes therefore A lightweight frame supports a wheelchair platform for up and down movement between four vertical standards, one at each corner. A lifting mechanism includes a winch supported between two of the standards and connected to the platform by cables which pass... | 05/22/1990 |
| 4884783 | Hoist with oil cooled brake A compact, lightweight, electrically powered hoist with a drum used for hoisting or lowering a payload. A vertically oriented reversible motor is controlled by a control pendant with a momentary switch to drive a helical gear reduction and a worm gear red... | 12/05/1989 |
| 4830300 | Apparatus for reeling flexible cable A cable reeling apparatus particularly useful for reeling and dereeling cable for seismic signal recording operations includes a lightweight frame on which a propulsion unit and drive shaft for a cable spool are supported. The cable spool is permanently m... | 05/16/1989 |
| 4770394 | Pulley hoists Pulley hoists are disclosed which provide moving anchor hooks that are suspended by two "pulls" of rope, and which may be fabricated by a single part. Anchor hooks are also disclosed which have multiple, independently movable hook portions so that certain... | 09/13/1988 |
| 4739969 | Lift sheave A lift sheave arrangement is disclosed which includes a static shaft and a sheave mounted for rotation about the static shaft. The sheave has a first portion for receiving a cable which is to be connected to a lift car and a second portion which includes ... | 04/26/1988 |
| 4646805 | Chain winch A chain winch 10 having a sprocket wheel 14 of polygonal cross-section with flat faces 32 dimensioned in dependence on the dimensions of a link chain to be used therewith and having pin formations 36 for engaging between or in chain links. The winch inclu... | 03/03/1987 |
| 4635491 | Fail-safe motor-driven cylinder for lifting apparatus A motor-driven cylinder for lifting apparatus has screw means including intermeshed internally and externally threaded screw means by which a load can be moved upwardly and downwardly by the torque of a motor, the motor-driven cylinder including torque tr... | 01/13/1987 |
