Power beam for rotating structural member

Details Power beam for rotating structural member Power beam for rotating structural member

1986-02-10

1987-08-04

Pate, III, William F.

Movable or removable closures

Up-and-over type; e.g., moves from vertical to withdrawn...

With operator

52113, 52121, E05F 1100

Patent

active

046836772

ABSTRACT:
A power beam converts a linear force into a torque. The beam is slideably positioned transverse to a structural member to be rotated and adjacent a hinged connection of the structural member to a frame. The beam is driven in a linear direction by a motive means such as a hydraulic cylinder, cable network or threaded shaft and actuation nut. A cable extends from its connection to the structural member at a set distance from the hinged connection, over the end of the slideable beam and then to a bias means, typically a spring. To rotate the structural member, the slideable beam is driven transverse to the structural member to impart a force along the cable the spring travels to its limit and thereafter a significant force is applied to the structural member to rotate the structural member.

REFERENCES:
patent: 3313062 (1967-04-01), Dugger

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