Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Panel hangers – travelers and/or tracks – Wheel mounts
Patent
1987-09-17
1989-02-21
Silverberg, Fred
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Panel hangers, travelers and/or tracks
Wheel mounts
16 34, 16 91, 49425, E05D 1506
Patent
active
048052620
ABSTRACT:
The roller assembly of this invention comprises a grooved wheel attached to a perforated metal tape or spring which is movable over a sloping track by means of a toothed gear wheel or sprocket.
REFERENCES:
patent: 3283444 (1966-11-01), Andres
patent: 3299575 (1967-01-01), DuShane
patent: 3386208 (1968-06-01), Banner
patent: 3443340 (1969-05-01), Helmick et al.
patent: 3613313 (1971-10-01), Helmick
patent: 3716890 (1973-03-01), Benson
patent: 3722028 (1973-03-01), Schoenbrod
patent: 4112622 (1978-09-01), Stewart
patent: 4353186 (1982-10-01), Offerdinger
Brown Edward A.
Grace James W.
JW Window Components, Inc.
Silverberg Fred
Vanecek Charles W.
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