Oscillating movement damping means intended for pivotally suspen

Details Oscillating movement damping means intended for pivotally suspen Oscillating movement damping means intended for pivotally suspen

1978-02-02

1980-01-01

Marbert, James B.

Handling: hand and hoist-line implements

Grapple

Well type

294 88, B66C 100

Patent

active

041813430

ABSTRACT:
A means to damp the oscillating movements of a hoisting device suspended in a link the upper end of which is in the form of a cylinder in which is pivotally mounted a first horizontal shaft on the outer end of a crane jib and the lower end of which is in the form of a fork member supporting between its legs a second horizontal shaft in a second cylinder forming the upper end of a holder supporting the hoisting device. The damping is affected by spring-actuated brake shoes acting against its respective cylinder face. Rotationally mounted clamp bolts are arranged when turned, preferably over 180.degree., to increase the tension of said spring means.

REFERENCES:
patent: 3592503 (1971-07-01), Landberg
patent: 4099761 (1978-07-01), Cullings

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