Door-closer hinge with rotary-movement shock absorber

Details Door-closer hinge with rotary-movement shock absorber Door-closer hinge with rotary-movement shock absorber

1987-01-23

1988-07-12

Godici, Nicholas P.

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

Checks and closers

Hinge

16 54, 16 76, 16 82, 16299, 16304, E05F 320, E05F 112, E05F 502

Patent

active

047560517

ABSTRACT:
A door-closer hinge includes a first flap secured to a door, a second flap secured to a door frame, and an automatic closer as restored by a restoring spring and having a longitudinal casing secured to the second flap, in which a rotor vane fixed on a rotor having a needle passage formed in the rotor is operatively rotated with respect to a cylinder vane fixed inside a cylinder which is filled with a hydraulic oil and disposed around the rotor to thereby form a rotary-movement shock absorber for quickly opening a door when the oil is rotatably driven to contract the two vanes for quick flow of oil to the left, or for slowly closing the door when the oil is slowly returned to the right to expand the two vanes to allow oil flow merely through the smaller needle passage in the rotor.

REFERENCES:
patent: 2018564 (1935-10-01), Milly
patent: 3952365 (1976-04-01), Grisebach

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