Infinite position door hold-open

Details Infinite position door hold-open Infinite position door hold-open

1980-08-08

1982-06-01

Reynolds, Wm. Carter

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

Hinge

Including means to hold or retard hinged members against...

16347, E05D 1108, E05D 1110

Patent

active

043320562

ABSTRACT:
The free end of an arm rotatable with one hinge member contains a roller receiving cavity which opens to an arcuate friction layer on the other hinge member which is disposed about the axis of relative rotation of the hinge members. A spring biased double faced wedging member is movable into and out of the center of the cavity and each face of the member is respective to a semi-cylindrical roller retention surface of the cavity. One face is more steeply sloped than the other. When the hinge members are in door closed position the less steeply sloped face resiliently holds a cylindrical roller against a roller retention surface and the friction layer. As the hinge members rotate toward door open position, the cylindrical roller rotates along the friction layer, past the less steeply sloped face, and into rolling contact with the other retention surface and friction layer under the bias of the more steeply sloped face. When the hinge members move to the desired door open position, a slight reversal thereof causes the more steeply sloped face to force the roller into the friction layer and roller retention surface to provide a hold-open.

REFERENCES:
patent: 1055346 (1913-03-01), McQuillan
patent: 2683447 (1954-07-01), Pollock et al.
patent: 2992451 (1961-07-01), Schonitzer et al.
patent: 3010143 (1961-11-01), Widmer
patent: 3091819 (1963-06-01), Wheeler et al.
patent: 3461481 (1969-08-01), Bachmann
patent: 3517965 (1970-06-01), Cowles et al.
patent: 3584333 (1971-06-01), Hakala
patent: 3643289 (1972-02-01), Lohr
patent: 3965531 (1976-06-01), Fox et al.

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