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Class Information
Number: 254/376
Name: Implements or apparatus for applying pushing or pulling force > Apparatus for hauling or hoisting load, including driven device which contacts and pulls on cable > Device includes rotatably driven, cable contacting drum > Including means for preventing or retarding rotation of drum in at least one direction > Ratchet wheel or formation and locking pawl
Description: Apparatus wherein the means consist of either (a) a wheel having teeth located on its perimeter, the wheel being rotatably interconnected to the drum, and a pawl which interlocks with the teeth in one direction of the wheel"s rotation to prevent movement of the drum and which disengages from the teeth in the other direction of the wheel"s rotation to allow movement of the drum, or (b) a stationary ratchet formation having teeth located on its perimeter and a pawl connected to the drum which revolves around an axis when the drum is rotated, the pawl interlocks with the teeth in one direction of its travel to prevent movement of the drum and disengages from the teeth in the other direction of its travel to allow movement of the drum.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8459615 Winch assembly Jun. 11, 2013
8256745 Portable hoist Sep. 4, 2012
8056884 Cordless hoist Nov. 15, 2011
8033529 Ratcheted lift mechanism Oct. 11, 2011
7967278 Winch assembly Jun. 28, 2011
7753343 Retractable load support system Jul. 13, 2010
7614610 Hoisting and pulling device Nov. 10, 2009
7575224 Retractable bungee cord tie down Aug. 18, 2009
7562862 Tensioning assembly Jul. 21, 2009
7543800 Single stack manual marine winch Jun. 9, 2009
7533869 Ratcheted lift mechanism May. 19, 2009
7458563 Tree stand hoist Dec. 2, 2008
7370843 Retractable load support system May. 13, 2008
7303183 Safety brake mechanism for a winding drum and method for grinding a safety brake Dec. 4, 2007
7128307 Manual marine winch with compound handle Oct. 31, 2006
6938881 Manual marine winch with lead in webbing strap Sep. 6, 2005
6808164 Rope tensioning device Oct. 26, 2004
6726182 Manual winch with dual locking dogs Apr. 27, 2004
6644630 Brake mechanism for winch assembly Nov. 11, 2003
6572083 Winch with safe load release system Jun. 3, 2003
6494435 Spring-loaded safety winch for load restraint system Dec. 17, 2002
6431103 Winch Aug. 13, 2002
6406001 Chain lever hoist Jun. 18, 2002
6152426 Extensible boom Nov. 28, 2000
6116580 Reversible winch ratchet mechanism Sep. 12, 2000
6050305 Locking mechanism for a rotary electric loom shedding actuator Apr. 18, 2000
5921529 High line pull winch assembly Jul. 13, 1999
5575457 Structure for controlling braking action of a mechanical brake of a lever type hoist and traction machine Nov. 19, 1996
5458318 Drum brake Oct. 17, 1995
5368280 Tire lifting device Nov. 29, 1994
5316266 Strap extender and tensioning system May. 31, 1994
5290014 Compact tire lift unit Mar. 1, 1994
5287950 Fall-arrest apparatus with constant winch braking Feb. 22, 1994
5217208 Constant tension winch having an anti-theft mechanism Jun. 8, 1993
5176365 Vault door opener Jan. 5, 1993
5125628 Sheave and cable assembly for a tire lift/carrier winch Jun. 30, 1992
5046704 Method and apparatus improvements in oyster and shrimp winches Sep. 10, 1991
5004177 Apparatus for blocking a winch Apr. 2, 1991
4795136 Apparatus for erecting forms Jan. 3, 1989
4771987 Winch for loading and unloading small craft on trailers Sep. 20, 1988
4770394 Pulley hoists Sep. 13, 1988
4735448 Manually operated winch bumper Apr. 5, 1988
4723757 Ratchet-wheel-pawl assembly and release means for portable winch Feb. 9, 1988
4703917 Manual winch with drum release and handle storage Nov. 3, 1987
4697790 Pulley hoists Oct. 6, 1987
4693453 Cable drum latching and unlatching mechanism Sep. 15, 1987
4671494 Excessive load prevention apparatus employable for a hoist or the like Jun. 9, 1987
4566674 Neutral winch Jan. 28, 1986
4553738 Cable pulling device with anti-reversing clutch Nov. 19, 1985
4531715 Winch with storable handle Jul. 30, 1985

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