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Class Information
Number: 254/392
Name: Implements or apparatus for applying pushing or pulling force > Device or member for contacting and guiding moving cable > Including rotatable, cable contacting, pulley wheel element > With fluid, shock absorbing or tension restoring mechanism connected thereto
Description: Cable guides in which the device is provided with a fluid mechanism attached to the element for either (a) retarding changes in the position or attitude of the element resulting from variations in the amount of tension on the cable, or (b) restoring the element to a position or attitude in close proximity to its initial location or orientation subsequent to a change in its position or attitude as in (a) above.

Patents under this class:

Patent Number Title Of Patent Date Issued
8312908 Device for regulating the delivery rate of a linear element Nov. 20, 2012
8267379 Cable guiding device Sep. 18, 2012
8002244 High load block construction and connection Aug. 23, 2011
7744063 Safety device Jun. 29, 2010
7389973 Tensioning systems and methods for line spooling Jun. 24, 2008
7377487 Holding device for handling tools May. 27, 2008
6578825 Wire rope equalizer system for hoist mechanisms Jun. 17, 2003
6390952 Auto-belay rock climbing devices and modular climbing towers May. 21, 2002
6296232 Riser-tensioner Oct. 2, 2001
5101905 Riser tensioner system for use on offshore platforms Apr. 7, 1992
4964491 System for limiting snap load intensity Oct. 23, 1990
4867418 Apparatus for increasing the load handling capability of support and manipulating equipment Sep. 19, 1989
4850571 Connector assembly Jul. 25, 1989
4760992 Rope tension damper Aug. 2, 1988
4759256 Tensioner recoil control apparatus Jul. 26, 1988
4667625 Dog run apparatus having shock absorbing capability May. 26, 1987
4643399 Apparatus for counterbalancing tongs Feb. 17, 1987
4638978 Hydropneumatic cable tensioner Jan. 27, 1987
4620692 Crown block compensator Nov. 4, 1986
4616708 Riser tensioning system Oct. 14, 1986
4552339 Hoisting device with compensated tackle Nov. 12, 1985
4544137 Offshore crane wave motion compensation apparatus Oct. 1, 1985
4540159 Hydropneumatic cable tensioner Sep. 10, 1985
4535972 System to control the vertical movement of a drillstring Aug. 20, 1985
4501219 Tensioner apparatus with emergency limit means Feb. 26, 1985
4475755 Apparatus and method for assembly-disassembly of a spring loaded hook Oct. 9, 1984
4470355 Pneumatic cable tensioning apparatus and method for an aerial tramway or the like Sep. 11, 1984
4334670 Anchor winch equipment Jun. 15, 1982
4272059 Riser tensioner system Jun. 9, 1981
4268013 Crane motion compensator May. 19, 1981
4236695 Sea swell compensation Dec. 2, 1980
4215851 System for active compensation of unwanted relative movements, preferably during loading of cargo Aug. 5, 1980
RE29564 Hydraulic motion compensating apparatus Mar. 7, 1978
4069921 Overhead crane including a single failure proof hoist Jan. 24, 1978
4049239 Drill spring tension limiting device for floating drilling vessels Sep. 20, 1977
3948486 New device for applying a determined force to an element connected to an installation subjected to alternating movements Apr. 6, 1976
3940111 Apparatus for applying a determined force to an element connected to an installation subjected to alternating movements Feb. 24, 1976

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