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Felix Hoffmann, a German chemist, was searching for something to relieve his father's arthritis. In doing so, he "rediscovered" acetylsalicylic acid and in 1900, patented a stable process for developing it. Hence, we have aspirin.
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| Number | Title | Issue Date |
| 8267379 | Cable guiding device A cable guiding device includes a base, upper and lower guide members disposed along a longitudinal direction, in which two ends of the upper guide member are mounted on the base and two ends of the lower guide member are mounted on the base. A slider defining a cen... | 09/18/2012 |
| 8083213 | Portable winch A portable winch and method of use is shown. One advantage of winches shown includes an ability to lower a boom or boom sections into limited access exit pit for winching operations such as pipe bursting. Sectional boom designs shown provide the ability to easily ra... | 12/27/2011 |
| 7543799 | Method and apparatus for deploying articles in deep waters Equipment and method for lowering equipment (10) to the seabed from a vessel (12) using man made fibre rope (16) and a winch (20) employing wire rope (24), the fibre rope being paid out (or when lifting, drawn in) in sections by re... | 06/09/2009 |
| 7364135 | Panel assembly system A panel assembly system is disclosed, which includes an anchor; a tension line, secured to the anchor; and a puller, comprising an engaging face, a pivot joint secured to the engaging face, a lever rotatably mounted about the pivot joint, and a roller mounted on the... | 04/29/2008 |
| 7357376 | Device for lifting and stabilizing loads It is described a device for lifting and stabilizing loads, comprising a frame and a height-adjustable crossmember, which is located below said frame, bears the load, and is stabilized by two intersecting telescopic struts that are hinged on the crossmember so that ... | 04/15/2008 |
| 7350770 | Air conditioner compressor hoist The present invention provides a portable hoist for use by air conditioner mechanics, or others, to lift compressors in and out of HVAC units (or other heavy objects). The hoist has a lifting arm rotatable relative to a base and preferably provides a compact storage... | 04/01/2008 |
| 7318579 | Ladder hoist assembly A hoist assembly for use with an elevating device, such as a ladder, comprises a base structured for mounting the hoist assembly to the ladder or other elevating device. The hoist assembly includes a spool which is disposed in a normally secured orientation relative... | 01/15/2008 |
| 7303182 | System for raising, lowering & precision positioning of surveillance, security and communications equipment An elevated equipment holding apparatus includes a pin; and a latch plate that engages the pin. The latch plate includes a tortuous path that directs the pin to a latching point after the latch plate is raised and then lowered a first time, and frees the pin from th... | 12/04/2007 |
| 7264227 | Self-climbing stage light support A self-climbing stage lighting system having a self-climbing apparatus and a light bar is disclosed. The self-climbing apparatus is hung from cables that extend approximately vertically from a fixed endpoint. The self-climbing apparatus includes an elongated support... | 09/04/2007 |
| 7066683 | Hydraulically operated low profile boat lift utilizing at least two pilings An assembly for lifting a boat locatable adjacent a dock requires only two elongate vertically disposed pilings each having a lower end portion mounted into the floor of a body of water near the dock and an upper end portion extending upwardly adjacent the dock. A l... | 06/27/2006 |
| 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 |
| 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 |
| 7014172 | Electric hoist The present invention is to provide an electric hoist using a suspended electric winch that maintains a horizontal posture in any cargo handling operation. A hoist in one aspect includes a winch including a drum axially connected to a drive shaft of a motor, a suspe... | 03/21/2006 |
| 7007964 | 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, and a lifting strap with a first end adapted for attachment to a lower portion of the two-wheeled vehicle and a second end for ... | 03/07/2006 |
| 6983927 | Level wind apparatus for use on a snow grooming vehicle A level winder is provided for winding cable in a winch system. The winch is suitable for use on a tracked vehicle, such as a snow grooming vehicle, to assist the vehicle in maneuvering on steep inclines. The level winder uses a pivoting pulley assembly to feed cabl... | 01/10/2006 |
| 6904722 | Elongated truss boom structures for space applications An elongated truss boom structure is adapted to be flattened and coiled to a stowed configuration. The truss boom includes longerons, battens, and diagonals. A fixed ladder shaped structure is formed by a plurality of fixedly coupled battens which interconnect two a... | 06/14/2005 |
| 6705179 | Modified rope tensioner A rope tensioner sets the tension of a rope operated switch assembly actuable to switch between first and second conditions on a change in tension of the rope. The tensioner comprises a body, a rotatable member which engages the rope, a shaft for rotating the member... | 03/16/2004 |
| 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 |
| 6371449 | Portable motorcycle hoist A portable motorcycle hoist has a main frame assembly which includes a pair of vertically-oriented parallel channel beams rigidly affixed to both an upper cross brace and to a base member. The pair of channel beams provide a caged track for a trolley whic... | 04/16/2002 |
| 6234453 | Rolling door winch apparatus Winch apparatus for raising and holding a rolling steel door includes a wheeled base with telescoping members extending upwardly from the base. A hand cranked winch raises and lowers the telescoping members, while a reversible electric motor is used to po... | 05/22/2001 |
| 5967496 | Lifting drum having a self-positioning cable guide A cable guide for a winch having a lifting drum over which a cable is wound back and forth between two end flanges. A guide body in the form of a truncated cone is slidably mounted upon a pinion that is located adjacent to one end of the drum, generally p... | 10/19/1999 |
| 5863029 | Swivelably mounted rope guide for guiding a rope onto and off of a winding drum A rope guide for a winch, especially for hoisting gear, with a winding drum which has rope grooves running in opposite directions, including guide means which are provided for the alignment of at least a pair of rope lines and connected with one another v... | 01/26/1999 |
| 5829737 | Rope guide for a winch having two interconnected drivable rope guides A rope guide for a winch including a rotatably supported winding drum defining an axis of rotation and having helical cable or rope grooves defined about the drum periphery and which spiral inward from the drum distal edges toward the drum center. Two gui... | 11/03/1998 |
| 5509638 | Hoist with an elastic cable A hoist for loads that includes an elongated upright support assembly and an elongated extending support assembly pivotally mounted to the upper end of the former. The free end of the elongated radially extending assembly being able to follow a curved pat... | 04/23/1996 |
| 5271351 | Auto-sailing system A system for automatically causing a flexible sail to be brought to its optimum position with respect to the wind direction includes a sail holding member installed on the front of the hull and rope winders installed at rear portions of the hull, a flexib... | 12/21/1993 |
| 5145075 | Boom point construction A boom point construction connects the for and aft mountings of a sheave swivel to the major structural elements of a boom. The boom point includes a framework of elongated members joined together to form a truss. The framework includes assemblies of at l... | 09/08/1992 |
| 4861192 | Marine craft lift An apparatus for elevating objects and consisting of a frame for bearing on a subjacent support surface for the apparatus, a platform having an upwardly facing surface for bearing against an object to be elevated and laterally spaced sides and mounted to ... | 08/29/1989 |
| 4846446 | Rope tension damper A novel rope tension damper device is adapted to be installed, for example, on the deck of a ship at a location between the winch that controls the effective length of the rope and the fairlead that guides the rope so that it does not snag or tangle as it... | 07/11/1989 |
| 4795136 | Apparatus for erecting forms A form erection hoist for use with concrete building forms or panels has a support which engages the top or an intermediate rib of an erected form. A column is rigidly attached to the support and extends above and below it. A support for a central and an ... | 01/03/1989 |
| 4771988 | Lifting apparatus for heavy folding doors A single, telescopic tubular steel pole is supported by an elongated steel channel base having rubber wheels on each end. The pole is leaned and supported against the top of a door opening in a building by means of a removable top frame having a longitudi... | 09/20/1988 |
| 4767099 | Hoist system The hoist system of the instant invention is intended for use with an overhead support and includes an elongate bar disposed below the overhead support and extending in a generally horizontal direction. A lifting device is attached adjacent opposed ends o... | 08/30/1988 |
| 4606527 | Theatre scenery hoisting mechanism For raising and lowering theatre scenery there is a horizontal track in the fly loft of the theatre, and several carriages, slidable along the track, are shiftable to any desired positions along the track, positions being chosen in accordance with possibl... | 08/19/1986 |
| 4590720 | Telescoping derrick A heavy duty drilling mast or derrick made of a plurality of elements which telescope one into another so that the derrick can be raised from a collapsed position to an extended position with vertical axis by means of a plurality of four cables--one in ea... | 05/27/1986 |
| 4566561 | Selector cabling arrangement An elevator system has a selector mechanism driven by a cable loop attached to the elevator car. The opposite cable ends are wound on a take-up drum, in opposite rotational directions, in sequential rows across the drum, such that the cable leads travel b... | 01/28/1986 |
| 4469171 | Wireline guiding apparatus A wireline guide for use in oil-well industry has three arms, each of which is made of parallel elongated trusses with support plates attached between the trusses. The first, lower arm is fixedly attached at 45° angle to a collar of a pack-off assembly, ... | 09/04/1984 |
| 4423994 | Drilling rig equipped with pairs of block and tackle systems This invention relates to drilling rigs, and more particularly to novel apparatus for supporting a plurality of pairs of block and tackle systems with the tackle systems of each pair operable sequentially and alternately, the one being used to support a m... | 01/03/1984 |
| 4362292 | Overhead hoist assemblies When a hoist is used to elevate a grain truck for dumping same, at an elevator terminal or the like, a pair of lift cables extend from the overhead hoist assembly to the cradle upon which the front wheels of the truck are engaged. As the truck is lowered ... | 12/07/1982 |
| 4251176 | Well tubing handling apparatus Well tubing handling apparatus useful for running and pulling tubing in a well bore and drilling a well bore including a main frame assembly, a pulling and snubbing assembly, a ladder assembly, and a work platform assembly. The apparatus is quickly assemb... | 02/17/1981 |
| 4204354 | Articulated fishing drum An articulated fishing drum assembly especially adapted to be operated in a first lower operating position or a second upper operating position. The drum assembly comprises a pair of piston and cylinder actuating means to move a drum member from the lower... | 05/27/1980 |
| 4151981 | Brake drum controlled hoist A hoist is described which combines a block and tackle with a windlass. A drum brake and operating linkage therefor incorporated into the hoist is to automatically provide braking to prevent a load from causing unwanted reverse rotation of the windlass. L... | 05/01/1979 |
