Cam actuated self-locking hinge

Details Cam actuated self-locking hinge Cam actuated self-locking hinge

1985-06-27

1988-12-06

Yost, Frank T.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Hinge

Resiliently biased hinge

16348, 74 89, E05F 108

Patent

active

047887460

ABSTRACT:
Concentric tubes, mounted for relative rotation about their common axis, each include radially extending hinge plates. The tubes carry contra-rotational cam slots through which project the ends of a cross-shaft. Bearings on the ends of the cross-shaft engage the milled cam slots. A cylindrical cross roller bearing block mounting the cross-shaft is axially, slidably positioned within the inner tube and is under a biasing force exerted by a compression spring abutting one end of the block. The cam profiles of the slots includes portions at the ends of the slots extending parallel to the rotational axis to lock the inner and outer tubes together at the beginning and end of the stroke with the cam profile controlling the hinge plate acceleration, deceleration, and velocity, in addition to ensuring positive locking of the hinge in plate open and closed position.

REFERENCES:
patent: 1200538 (1916-10-01), Smith et al.
patent: 1556204 (1925-10-01), Cohen
patent: 1707628 (1929-04-01), Donosa
patent: 2222965 (1940-11-01), Voelkel
patent: 2520642 (1950-08-01), Laurantas
patent: 3919890 (1975-11-01), Workman
patent: 4155524 (1979-05-01), Marello et al.

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