Door closing device with a belt-shaped spiral spring

Details Door closing device with a belt-shaped spiral spring Door closing device with a belt-shaped spiral spring

1985-04-09

1988-11-15

Kazenske, E. R.

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

Closers

Spring

188 83, E05F 108

Patent

active

047838817

ABSTRACT:
A door closing device utilizing the elastic restoring force of a belt-shaped spiral spring to effect the closing of a door which comprises a housing having one portion fixed a door or a door frame; a reel rotatably disposed in the housing; a belt-shaped spiral spring wound on the reel having an end portion extending out from the housing with the end portion fixed to a door frame or a door.

REFERENCES:
patent: 392667 (1888-11-01), Devore
patent: 1055110 (1913-03-01), White
patent: 1588349 (1926-06-01), Ztacnik
patent: 2895779 (1959-07-01), Bender
patent: 3533127 (1970-10-01), Hoober
patent: 3778866 (1973-12-01), Nakanishi
patent: 4419787 (1983-12-01), Lieberman

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