B - Operations – Transporting – 66 – F
Patent
B - Operations, Transporting
66
F
254/151, 267/90
B66F 3/24 (2006.01) F16F 9/02 (2006.01) F16F 9/24 (2006.01)
Patent
CA 1060487
SNUBBER FOR ONE END LIFT JACKS Abstract of the Disclosure A one end lift or like jack is provided with a snubber which prevents a lift saddle from rising in an uncontrolled manner. The snubber comprises a bi-ended cylinder closed at both ends which is affixed to the lift cylinder for corresponding vertical motion. A piston rod is affixed to a relatively stationary lift frame, and a piston is mounted to the rod within the snubber cylinder to define two cylinder chambers. Within the piston is an axial bleed port bore permitting fluid to bleed between the chambers. A check ring can be moved by fluid pressure imbalance along the snubber piston rod into a closed position against the bleed port, inhibiting fluid flow and prohibiting uncontrolled rise of the snubber and main cylinders. when the check ring is not in its closed position, relatively free lift lowering action is permitted. - 1 -
261809
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