Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Hinge – Resiliently biased hinge
Patent
1991-06-10
1993-03-09
Spruill, Robert L.
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Hinge
Resiliently biased hinge
16307, 16 76, E05F 108
Patent
active
051916789
ABSTRACT:
A spring loaded door hinge comprising a rod that moves with the door as the door pivots. Attached to the door frame is a flange. The door is attached to the rod by means of collars. The tails of the coil springs extend from the rod so that they may, depending upon their position, be in position to strike the door frame flange thereby preventing a large shock from being transferred to the door if it is swung open violently. Also the spring hinge allows the door to be easily opened initially with resistance to the door opening being controlled by the positioning of the tails of the coil springs. The springs are distributed vertically to prevent twisting of the door and frame. The tails of the spring coils are hooked so that the can engage the door frame flange if extreme force is placed upon the door when opening. The hooks set a limit as to how far the door may be opened and prevent the spring tail from binding between the flange and the spring coil.
REFERENCES:
patent: 721 (1838-04-01), Hoyt et al.
patent: 1593724 (1926-07-01), Schenk
patent: 1745773 (1930-02-01), Sipe
patent: 1925945 (1933-09-01), Zielinski et al.
patent: 1931271 (1933-10-01), Simmons
patent: 2150435 (1939-03-01), Floreth
patent: 2309279 (1943-01-01), Smythe
patent: 3178762 (1965-04-01), Whiting
patent: 3538539 (1970-11-01), Allison
patent: 4377019 (1983-03-01), Takahashi
Cuda Carmine
Spruill Robert L.
T.J. Firari Enterprises
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