Hinge assembly

Details Hinge assembly Hinge assembly

1981-12-30

1983-08-30

Braun, Leslie A.

Machine element or mechanism

Control lever and linkage systems

Elements

74527, 212188, 414723, G05G 104

Patent

active

044009941

ABSTRACT:
A first segment usually attached to a tractor is pivotally linked by a first bolt to a second pivotal segment. For example, which may be moved between an extended outward working position and a retracted, non-working inward position. A hydraulic cylinder and piston are mounted on the fixed segment and the free end of the piston is pivotally linked to the base of a substantially U-shaped member. One arm of the U-shaped member is pivotally linked to the fixed segment, and the other arm of the U-shaped member is pivotally linked to one end of a coupling member. The other end of the coupling member is pivotally linked to the pivotal segment. In the extended position, the arms of the U-shaped member pivot down wardly, and the end of the coupling member connected to the pivotal segment comes to rest between the arms of the U-shaped member in horizontal alignment with the links connecting the U-shaped member to the fixed segment and pivotal segment. Arms of the U-shaped member come to rest in a position substantially surrounding the bolt connecting the fixed segment to the pivotal segment, and the two segments are thereby locked in the extended position.

REFERENCES:
patent: 2269308 (1942-01-01), Gates et al.
patent: 4127203 (1978-11-01), Arnold
patent: 4265587 (1981-05-01), Clark
patent: 4297908 (1981-11-01), Zimmer
patent: 4303012 (1981-12-01), McGlennon

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