Self-closing child-proof hinge/lock mechanism

Details Self-closing child-proof hinge/lock mechanism Self-closing child-proof hinge/lock mechanism

1985-07-17

1987-10-06

Silverberg, Fred

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

Hinge

Gravitating hinge having vertical axis

16347, 16360, 16363, 256 26, E05F 104

Patent

active

046973060

ABSTRACT:
A self closing lockable hinge system including a pin member and a sleeve member rotatable about the pin member. The pin member and the sleeve member have associated therewith mutually engageable surfaces such that upon rotation of one member relative to the other the sleeve member is movable from a lower closed position to an upper open position relative to the pin member. This movement is caused by engagement of the mutually engageable surfaces. There is also provided lock to retain the sleeve member in the lower closed position whereby in the closed position relative rotation between the pin member and the sleeve member is prevented. The lock comprises register means movable between a first aligned position whereby the movement of the sleeve member is permitted and a second misaligned position wherein the movement of the sleeve member is prevented.

REFERENCES:
patent: 156325 (1874-10-01), Alston
patent: 182570 (1876-09-01), Ferguson
patent: 309039 (1884-12-01), Foster
patent: 530377 (1894-12-01), Ashton
patent: 612471 (1898-08-01), Wood
patent: 753443 (1904-03-01), St. Hilaire
patent: 959560 (1910-05-01), Landis
patent: 1261713 (1918-04-01), Crook
patent: 1294044 (1919-02-01), Buckwalter et al.
patent: 1837204 (1931-12-01), Chester
patent: 3398487 (1968-08-01), Matayas

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