Soft tread caster wheel and method of making same
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 28, 1982
Grant Date -
N/A
app pub date -
Oct 22, 1979
filing date -
Oct 22, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Family
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Cited Art Landscape
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