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Class Information
Number: 294/119.4
Name: Handling: hand and hoist-line implements > Grapple > Swing dampener
Description: Grapples wherein the suspension means for the grapple includes a motion retarder to prevent undesired oscillation of the grapple.

Patents under this class:

Patent Number Title Of Patent Date Issued
6206440 Damped mechanical joint assembly Mar. 27, 2001
5779383 Braked mechanical joint assembly Jul. 14, 1998
5713688 Braked mechanical joint assembly Feb. 3, 1998
5601161 Snubber brake assembly Feb. 11, 1997
5451087 Damper for a grapple Sep. 19, 1995
5265928 Robot hand Nov. 30, 1993
5221118 Part gripping unit Jun. 22, 1993
5110169 Grease loaded grapple dampener May. 5, 1992
5096247 Hydraulic snubber for grapple equipped hydraulic fluid supply system Mar. 17, 1992
5026248 Hydrodynamic swing damper and tree handling vehicle incorporating the same Jun. 25, 1991
4863206 Support for a gripper Sep. 5, 1989
4810020 Hydraulic snubber for grapple and method Mar. 7, 1989
4776748 Receptacle transporting vehicle Oct. 11, 1988
4743055 Automatic gripper for gripping and holding a rod, especially on a drilling rig May. 10, 1988
4723639 Rotary hydraulic snubber with a bypass valve Feb. 9, 1988
4717191 Swivel head for grapple Jan. 5, 1988
4715641 Mounting apparatus for a grapple head assembly Dec. 29, 1987
4697840 Snubber device for parallelogram grapple Oct. 6, 1987
4679839 Grapple snubber Jul. 14, 1987
4662300 Offshore load-handling system May. 5, 1987
4609081 Hydraulic snubber Sep. 2, 1986
4573728 Snubbing apparatus for grapples and the like Mar. 4, 1986
4572567 Snubbing apparatus for grapples and the like Feb. 25, 1986
4553778 Implement snubbing device Nov. 19, 1985
4417759 Grapple pivot joint with swing dampener Nov. 29, 1983
4382624 Grapple pivot snubber May. 10, 1983
4379675 Dampened fully pivotal hanger for a grapple Apr. 12, 1983
4335914 Grapple pivot joint with swing dampener Jun. 22, 1982
4181343 Oscillating movement damping means intended for pivotally suspended hoisting gear Jan. 1, 1980
4099761 Suspended material handling unit Jul. 11, 1978
4099762 Gripping device Jul. 11, 1978
3946882 Grapple skidder with self-centering grapple support mechanism Mar. 30, 1976
3945137 Brake for cushioning pendulum movements, especially for grab buckets of hydraulically operable earth dredges Mar. 23, 1976
3937302 Oscillating movement damping means intended for pivotally suspended hoisting gear Feb. 10, 1976

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