Retractable caster assembly having a lever in rolling engagement

Details Retractable caster assembly having a lever in rolling engagement Retractable caster assembly having a lever in rolling engagement

1980-12-22

1983-11-29

Silverberg, Fred

Land vehicles

Wheeled

Extensible

16 34, 280 4324, B60B 3306

Patent

active

044177380

ABSTRACT:
A retractable caster assembly for permanent attachment to a framework. The caster assembly, when retracted, allows the framework to rest on a surface in a first stable position and when extended, the assembly raises the framework above the surface in a second stable position. The caster assembly comprises a caster, a caster carrying structure, a structure for pivotably mounting the caster carrying structure to the framework and a lever pivotably mounted to the framework for engagement with the caster carrying structure to lower the caster into engagement with the surface in one stable position and raise the center so the lower periphery of the caster is above the lower surface of the framework in another stable position of the assembly.

REFERENCES:
patent: 554359 (1896-02-01), Breed
patent: 2461479 (1949-02-01), Moffat
patent: 2827302 (1958-03-01), Skyrud
patent: 3250513 (1966-05-01), Fenner et al.
patent: 3514001 (1970-05-01), DeMeritt et al.
patent: 4027771 (1977-06-01), Adams
patent: 4105218 (1978-08-01), Newell
patent: 4213624 (1980-07-01), Sanders

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