Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Casters – Spring supported
Patent
1984-06-07
1985-12-24
Silverberg, Fred
Miscellaneous hardware (e.g., bushing, carpet fastener, caster,
Casters
Spring supported
16 45, 16DIG36, 267 21R, 267 63R, B60B 3300
Patent
active
045596697
ABSTRACT:
A shock resistant caster includes two structures one of which is connectable to a unit to be supported, and the second of which carries a wheel and is connected to the first structure for pivotal movement relative thereto. A cushion formed of elastomeric material is positioned to be compressed upon imposition of a load on the caster, to attain a cushioned support of the load, and may be held in position by a locating pin connected to one of the two relatively movable structures and extending through a passage in the cushion. The wheel preferably has an elastomeric portion formed of a material which is softer than the elastomeric material of the cushion, with the overall effect of the entire assembly being to produce a ride which is soft under low load conditions and becomes progressively stiffer in non-linear fashion as the load increases to optimize the support of the carried unit under all conditions.
REFERENCES:
patent: 1745992 (1930-02-01), Herold
patent: 1902726 (1933-03-01), Schacht
patent: 3214785 (1965-11-01), Chroust
patent: 3566433 (1971-03-01), Lewin
patent: 4067083 (1978-01-01), Greene
patent: 4188048 (1980-02-01), Haung et al.
patent: 4346498 (1982-08-01), Welsch et al.
patent: 4462138 (1984-07-01), Black
patent: 4485521 (1984-12-01), Welsch et al.
Bonzer Richard C.
Greene Frederick C.
Darnell Corporation, Ltd.
Green William P.
Silverberg Fred
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