Spring devices – Vehicle – Lever and nontorsion spring
Patent
1975-06-18
1977-02-08
Burr, Edgar S.
Spring devices
Vehicle
Lever and nontorsion spring
37118R, 267134, 267135, 267141, 294 69R, E02F 381, E02F 384, F16F 700
Patent
active
040068323
ABSTRACT:
Apparatus for dampening the closing of a heavy door of the type mounted along a hinge axis on a heavy movable member such as a digging bucket for a shovel, said dampening apparatus comprises a crank pivotally mounted intermediate its ends on said movable member adjacent said hinge axis, linkage means pivotally mounted adjacent one end thereof on said door and pivotally connected adjacent an opposite end to one end of the crank, a cushioning device having a lower pivotal connection pivotally connected to the crank at the end thereof opposite from the first-mentioned end and an upper pivotal connection pivotally connecting the cushioning device to the movable member, and the cushioning device comprises a telescopic rubber snubber.
REFERENCES:
patent: 146325 (1874-01-01), Eaton
patent: 998797 (1911-07-01), Palmer
patent: 2434902 (1948-01-01), Burdick
patent: 3059793 (1962-10-01), Atkinson et al.
patent: 3140080 (1964-07-01), Rumsey
patent: 3437332 (1969-04-01), Lee
patent: 3814411 (1974-06-01), Aarons et al.
Auxer Marvin L.
McCann Floyd E.
Shepherd Gerald D.
Bratlie Steven A.
Burr Edgar S.
Dorman William S.
Unit Rig & Equipment Co.
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