180.degree. concealed hinge

Details 180.degree. concealed hinge 180.degree. concealed hinge

1992-06-01

1994-02-01

Sipos, John

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

Hinge

Including means to hold or retard hinged members against...

16371, 16366, E05C 1764, E05D 1106, E05D 306

Patent

active

052822931

ABSTRACT:
A 180.degree. concealed hinge includes two pivots which are advantageously arranged to provide a deterministic opening sequence. The hinge comprises a frame leaf member and a door leaf member which are pivotally connected to a mounting leaf member. In one embodiment of the invention, the deterministic opening sequence is obtained by employing a loose fit pivot and a friction fit pivot. The deterministic opening sequence is such that rotation occurs first about the loose fit pivot from a closed position to an approximately 90.degree. open position when an opening rotational force is applied to the door leaf member. Upon reaching the 90.degree. open position, further rotation about the loose fit pivot is prevented by a unique stop arrangement. Then, rotation can occur about the friction fit pivot for an additional 90.degree.. Further rotation about the friction fit pivot is prevented by also employing another unique stop arrangement. Consequently, a door attached to the hinge is restricted to opening in a deterministic sequence to 180.degree. in total.

REFERENCES:
patent: 845863 (1907-03-01), Erickson
patent: 3619853 (1971-11-01), Merrill
patent: 4242773 (1981-01-01), Beigh
patent: 4704970 (1987-11-01), Sanderson et al.
patent: 4928350 (1990-05-01), Morgan
patent: 4964193 (1990-10-01), Rommelfaenger et al.
patent: 5158503 (1992-10-01), Mitchell
Undated catalog EMKA, Inc., 6332 Flank Drive, P.O. Box 6198, Harrisburg, Pa. "180.degree. Concealed Hinge" pp. C060, C070.

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