Free wheel caster
OwnerSalustiano Tifreinventor
Life of this patent
Estimating the term…
Abstract
A free wheel caster is provided and consists of a large ball rotatively carried within a cavity in a cup portion of a caster body which rolls against a plurality of small balls to ride freely within anti-friction material coating recesses in the cavity. The caster body can be attached to bottom of an object to move the object across a flat surface. It can also be attached to top of an object to move other objects thereacross. A ready access hole is also provided in the cup portion so that a tool can be inserted for prying and thereby removing the large ball from the cavity in the cup portion for cleaning and repair.
Claims3
A free wheel caster which comprises:
- (a) a caster body defined by a base portion, a shaft portion extending from the base portion and a one piece cup portion extending from the shaft portion, the base portion being adapted to be affixed in a first position to a bottom portion of an object and in a second position to a top portion of an object, the cup portion having a generally dome-shaped cavity therein with a plurality of spaced apart recesses formed in a wall of the cavity;
- (b) a plurality of small balls, each mounted to freely ride within a recess;
- and
- (c) a large ball rotatively captivated in the cavity to engage with said small balls in a manner to be freely rotatable in any direction in the cavity so that, when said base portion is affixed in the first position, the object can be moved easily along a flat surface, and when said base portion is affixed in the second position, other objects can be moved across said large ball;
- (d) the cup portion of said caster body having a ready access hole means extending through said wall of the cavity for inserting a tool therethrough and into the cavity to forcibly pry said large ball from the dome-shaped cavity so that the cup portion can be cleaned and repaired.
Dependencies are inferred from the claim text.