Spring operated automatic door and window closing hinge

Details Spring operated automatic door and window closing hinge Spring operated automatic door and window closing hinge

1986-04-01

1987-10-06

Silverberg, Fred

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

Checks and closers

Liquid

16 55, 16 58, 16 82, 16DIG9, E05F 314

Patent

active

046973028

ABSTRACT:
An automatic door/window closing device has a center shaft provided with V-shaped spiral channels to a base such as its surface and secured to a base such as the ground, a floating piston which forms a screw pair with the shaft by engagement of steel balls in the spiral channels, a housing with a flange which is secured to the door or window, a spring for providing the force to automatically close the door, and a cover. This device has a simple structure and is very light and which permits a door to be opened in both directions. After opening, the door will automatically close, and it can be also be damped for slowly closing the door. The door will rest when it opens to 90.degree..

REFERENCES:
patent: 2200418 (1940-05-01), Dudley
patent: 2209553 (1940-07-01), Bannenberg
patent: 2538679 (1951-01-01), Foltis
patent: 4100646 (1978-07-01), Schubeis
patent: 4190925 (1980-03-01), Koivusalo
patent: 4358870 (1982-11-01), Hong
patent: 4485522 (1984-12-01), Chen

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