Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Sash balances – Spring
Patent
1976-12-20
1978-05-23
Kee Chi, James
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Sash balances
Spring
312319, E05F 106
Patent
active
040902749
ABSTRACT:
A gravity door closer for a refrigerated cabinet having a storage area to which access is gained through a door pivotable between an open position and a closed position about a vertical axis defined by upper and lower hinge units wherein a pair of vertically telescoping journalled bushings have hubs respectively mounted in openings formed in the lower surface of the door and a bracket on the cabinet, the bushings including a plurality of intermeshing circumferentially spaced camlobes defined by converging side walls terminating at flat tip walls, the side walls interengaging in the closed position and a predetermined open position such that the weight of the door tends to cause the camlobes to bottom in the grooves therebetween to establish detent positions, the flat tip walls of the camlobes contacting providing infinite door positioning in a sector between said detent positions, the torque applied to the bushings tending to rotate the same in the openings being resisted by torque arms attached to the door and the bracket at locations spaced from the hubs thereby avoiding localized shearing of the material thereabout.
REFERENCES:
patent: 3378881 (1968-04-01), Hentzl et al.
patent: 3398487 (1968-08-01), Matyas
patent: 3628845 (1971-12-01), Grimm
patent: 3648327 (1972-03-01), Edens
patent: 3722031 (1973-03-01), Bourgeois
Admiral Corporation
Chi James Kee
LandOfFree
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