Sealed caster

Miscellaneous hardware (e.g. – bushing – carpet fastener – caster – Casters – Antifrictionally swivelled

Patent

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Details

16 18CG, B60B 3300

Patent

active

039641244

ABSTRACT:
A caster utilizing mounting structure, leg structure rotatably mounted on the mounting structure, and a wheel rotatably mounted upon the legs wherein the relatively movable parts of the caster are sealed against the entrance of foreign matter by means of a resilient synthetic material cover. In the method of constructing a caster in accord with the invention components thereof are coated with the coating material, such as by dipping, and the coating material, after curing, is severed at the desired locations to form sealing edges between relatively movable components. In a preferred method of forming the caster, mandrels having a configuration similar to the final caster components may be employed, however, it is within the scope of the invention to use the caster components themselves for molding purposes wherein the sealing material is later severed at the desired locations. The resultant sealed caster, while not watertight, is effective to prevent most foreign matter from entering the relatively moving components of the caster such as the swivel bearing and axle.

REFERENCES:
patent: 1432966 (1922-10-01), Chesnutt
patent: 2034948 (1936-03-01), Knapp
patent: 2523659 (1950-09-01), Heffernan
patent: 2787804 (1957-04-01), Noelting et al.
patent: 2908536 (1959-10-01), Dickey
patent: 3399421 (1968-09-01), Crawford
patent: 3479680 (1969-11-01), Clinton et al.

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