Automatic door closer having an adjustable torsion spring and co

Details Automatic door closer having an adjustable torsion spring and co Automatic door closer having an adjustable torsion spring and co

1988-01-27

1989-07-11

Silverberg, Fred A.

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

Hinge

Resiliently biased hinge

16301, 16 75, E05F 108

Patent

active

048458112

ABSTRACT:
Spring closing device for door or the like, comprising at least two hinges, each one comprising two components articulated on an axis and one of which, known as the mobile component, is fixed on the door and the other of which, known as the fixed component, is fixed on the post of this door, whereby a flexible spring torsion bar is also provided between this door and its post so as to bring it back automatically into the closed position, a device characterized in that the elastic component comprises a steel spring torsion bar (6) connecting the fixed component of a hinge to the mobile component of another hinge.

REFERENCES:
patent: 416044 (1889-11-01), Wise
patent: 518639 (1894-04-01), Wilson
patent: 2908050 (1959-10-01), Sullivan et al.
patent: 3022536 (1962-02-01), Floehr
patent: 3209391 (1965-10-01), Mangini

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