Soft tread caster wheel and method of making same

Details Soft tread caster wheel and method of making same Soft tread caster wheel and method of making same

1979-10-22

1982-09-28

Troutman, Doris L.

Miscellaneous hardware (e.g., bushing, carpet fastener, caster,

Casters

Wheels

A47B 9100

Patent

active

043510841

ABSTRACT:
A soft tread caster that is manufactured by first molding a relatively rigid plastic hub with integral projections about its periphery and thereafter molding a softer plastic tread directly to the hub periphery so that the tread material flows around and under the projections. The projections consist of two adjacent annular rows of integral T-shaped projections on the outer surface of the hub with the rows being staggered to form a plurality of axially extending holes through the projections. When the tread is molded around the hub, tread material flows under the T-shaped projections securely holding the tread to the hub radially and it also flows through the axial holes, thereby locking the tread to the hub laterally.

REFERENCES:
patent: 1433301 (1922-10-01), Robb
patent: 1592043 (1926-07-01), Noelting
patent: 1682899 (1928-09-01), Fletcher
patent: 2145343 (1939-01-01), Dempsey
patent: 3194293 (1965-07-01), Kindley
patent: 4067083 (1978-01-01), Green

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