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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7543798 | Portable battery-operated winch with electrical outputs for accessory devices A portable winch apparatus having a rechargeable battery and electrical outlets for the charging and operation of external accessory devices. The winch is housed in a casing with various anchor attachments that allow for multiple dragging, towing, and lifting arrang... | 06/09/2009 |
| 7416168 | Prize lift telescoping assembly An electromechanical prize dispensing system is provided for a game used, for example, in the arcade, amusement, carnival, trailer, or group game industries. The invention includes a means of suspending and controlling the movement of prizes on an extensible and ret... | 08/26/2008 |
| 7367547 | Lifting device with release mechanism that moves with lifted object Provided is a lifting device comprising: a hook or clip; secured to the hook or clip, one or more first pulleys; a second hook or clip; secured to the second hook or clip, (i) a release mechanism comprising a second pulley and a releasable lock for an engaged flexib... | 05/06/2008 |
| 7364136 | Hoist assembly A hoist assembly for raising and lowering a load uses a plurality of flat tensile members and spool drums. A modular hoist system can be adapted to various configurations by mounting a plurality of hoist assemblies in combination. ... | 04/29/2008 |
| 7341157 | Enclosed-reeving, live-line boom A crane comprising a boom formed as an elongate tubular structure and a line assembly to extend a line from a least one end of the boom. The line assembly may include a first bank of sheaves, a second bank of sheaves, a line reeved around the first and second banks ... | 03/11/2008 |
| 7334776 | Apparatus and method for vehicle on-board cargo handling system An apparatus for loading an object into a vehicle, the vehicle having a trunk lid, the apparatus comprising: a line; an actuator adapted for applying a tensile force to the line in response to an actuator command, and disposed and adapted for transmitting at least a... | 02/26/2008 |
| 7334590 | Anti-slip opening and closing device for sun umbrella An anti-slip opening and closing device for an umbrella is described, which comprises a rope reeled on a roller positioned on a pole of the umbrella. The roller is screwed with a reel having a friction disc. The friction disc is set inside a notch of a ratchet wheel... | 02/26/2008 |
| 7318578 | Motorized pulley with cable connector The present invention relates to a motorized pulley (1) with a cylindrical cable connector (10) comprising a cylindrical drum (5) that is mounted rotatably about a shaft (11) and is configured for being fixedly mounted on supporting means... | 01/15/2008 |
| 7263911 | Steering wheel assembly A steering wheel assembly for a machine or a vehicle includes a steering wheel and a pommel mounted on the steering wheel for rotation about an axis extending parallel to the axis of rotation of the steering wheel to facilitate one-handed rotation of the steering wh... | 09/04/2007 |
| 7261631 | Portable big game hoist assembly A portable big game hoist assembly includes a bottom rod that has a first end and a second end. Each of a pair of bottom couplers is attached to one of the first and second ends. Base supports are attached to and extend laterally away from the bottom couplers. A fir... | 08/28/2007 |
| 7243870 | Portable studio hoist A portable studio hoist which can be positioned and secured in a studio pipe grid or other structural setting without the need for hard wired power supplies or fixed attachments. The portable studio hoist is designed to operate on standard single phase 120 volt powe... | 07/17/2007 |
| 7226042 | Winch and winch drum Disclosed is a winch drum for rotation about a rotation axis. The winch drum has a rope-receiving surface with a plurality of raised ridges defining substantially helical channels between them. The channels provide guidance for rope along the rope-receiving surface ... | 06/05/2007 |
| 7227322 | Hoist with detachable power and control unit A hoist is powered by a separate power unit. The hoist unit includes: a motor, a mounting connector, a spool, webbing, auto cut-off and a first portion of a mating electrical connector. The control unit includes a hollow pole, a hook, a second portion of the mating ... | 06/05/2007 |
| 7226040 | Power supply winch system The power supply winch system comprises a generally inverted L-shaped supportive frame and a winch attached to the supportive frame. The supportive frame comprises a horizontal member and a vertical member that are pivotally attached to one another at one end. The h... | 06/05/2007 |
| 7222839 | Cable slack and guide monitoring apparatus and method for a lift device The present invention is a method and apparatus for monitoring the condition of a cable in a human power amplifying lift system. The method and apparatus employ a cable slack sensor and a cable end sensor to override and prevent the lift from continuing to unwind th... | 05/29/2007 |
| 7222697 | Elevator An elevator is described, comprising a first series connected pulley set installed in a fixing frame, a carriage located below the first series connected pulley set, a second series connected pulley set installed on the top of the carriage, a rotary wheel installed ... | 05/29/2007 |
| 7213798 | Method and apparatus for retrieving submerged vehicles A submerged vehicle extraction method employing a specifically designed apparatus known as the submerged vehicle extractor. The primary purpose of the submerged vehicle extractor is to facilitate the transferring of a vehicle that has broken through the frozen surfa... | 05/08/2007 |
| 7201365 | Apparatus and a method for use in handling a load Apparatus for use in handling a load where a load-bearing rope and a service cable are inter-wound as they are being paid out, having a wrapping device for wrapping a securing member around the service cable and the load-bearing rope, and to unwrap the securing memb... | 04/10/2007 |
| 7182361 | Motorcycle lift bar and method A two-wheeled vehicle uprighting device having a support bar with a stabilizing base on one end and a ratcheting mechanism on another end, a cable sling adapted for attachment to a lower portion of the two-wheeled vehicle, and a flexible lifting member with a first ... | 02/27/2007 |
| 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 |
| 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 |
| 7142967 | Features of main control computer for a power machine The present invention is directed to a computer based control system for controlling hydraulic and electromechanical actuators on a power machine, such as a skid steer loader. The computer based control system is configured to implement a number of features to enhan... | 11/28/2006 |
| 7134645 | Winch assembly for use with synthetic ropes A winch assembly is disclosed that eliminates rope crushing, even when synthetic ropes are used. Tension is applied to the rope by at least one traction sheave so that the tension at the drum is reduced. By using multiple sheaves with large wrap angles traction can ... | 11/14/2006 |
| 7119295 | Suspended control device The invention refers to a hanging control device connected to a unit to be managed, specifically control switches or hanging control panels in order to control hoisting gear, by means of a control line, whereby the control line contains electrical lines (2) t... | 10/10/2006 |
| 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 |
| 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 |
| 7108248 | Cable pulley block having detachable fastening of a cable to a cable drum The invention concerns a detachable fastening of a cable (2) on a cable drum (1), especially a wire cable, with an opening (1a) arranged in the cable drum (1), with an enlarged cable end (2a) on the cable (2) a... | 09/19/2006 |
| 7059956 | Portable game hoist A device, easily assembled and disassembled for portability, for hoisting and skinning large game in the wilderness. A pair of upright members extend upward from base members, and a cross beam joins upper ends of the upright members to form a rigid frame. A winch mo... | 06/13/2006 |
| 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 |
| 7048257 | Winch with telescoping mast A portable winch suitable for use in underground pipe bursting and replacement includes a mounting frame positionable at a top opening of a hole such as a receiving pit or manhole. A telescoping mast having a series of nested, top and bottom mast sections is mounted... | 05/23/2006 |
| 7000903 | Wireline subsea metering head and method of use A system and method to measure positioning with respect to deploying a subsea load, the system comprising a subsea metering head having a position sensor; a controllable winch operatively connected to the winch flexible cable; and a controller operatively in communi... | 02/21/2006 |
| 6926019 | Umbrella shaft, and umbrella having such an umbrella shaft Umbrella shaft for a hanging umbrella, having a shaft part (20,26) and a rope drive (22), which connects a slide (16) and a crown (8) of the umbrella, the slide and the shaft part being coupled axially to one another when the umbrella is ... | 08/09/2005 |
| 6921060 | Winch handle A winch handle for a winch has an extendable arm with an extended position and a retracted position. The retracted position of said extendable arm being equal to or within the diameter of the winch. In its retracted position, the extendable arm is shaped in a fashio... | 07/26/2005 |
| 6752384 | Apparatus and method for handling cables Apparatus for handling cables is disclosed. The apparatus comprises means (10, 12, 16, 18) to pay out a service cable (20) and a support cable (14) so that the service cable (20) and the support cable (14) are adjacent, and means t... | 06/22/2004 |
| 6712337 | Hoist system A hoist system comprises at least one mast (2), a hoist trolley (4) moveable externally along the mast, and a platform (24), which is articulately coupled to the hoist trolley (4) so that it is horizontally pivoting about a substantially ... | 03/30/2004 |
| 6712336 | Apparatus and method for use in handling a load An improvement to lifting devices where a service cable 1 and hoist rope 2 are wound around one another, wherein the load-bearing rope 2 is wound around the cable 1 that is paid off from a cable winch 13 so that when the wound cabl... | 03/30/2004 |
| 6695291 | Rapid-winding winch for amusement ride Drums 56 wind and unwind cables 18 connected to a passenger carriage 14 of an amusement ride 12 in response to winding and unwinding of tethers 48 about an axle 46. The tethers 48 are connected to elastic members 44 that store energy, and a lock 32 is rel... | 02/24/2004 |
| 6681638 | Device and method for wireless material handling systems The invention provides a device and method for wireless material handling systems. The invention further provides an instrumented glove device worn by an operator. A sensory system within the glove device measures the contact force the operator is exertin... | 01/27/2004 |
| 6674828 | Safe lift and process for transporting canisters of spent nuclear fuel A system and method for moving a canister of spent nuclear fuel from a first location, which may be within a nuclear power generation facility to a second location such as a storage cask that is used for short-term or long-term storage of spent nuclear fu... | 01/06/2004 |
| 6622990 | Human power amplifier for lifting load with slack prevention apparatus A human power amplifier includes an end-effector that is grasped by a human operator and applied to a load. The end-effector is suspended, via a line, from a take-up pulley, winch, or drum that is driven by an actuator to lift or lower the load. The end-e... | 09/23/2003 |
