Knob with soft plastic cover

Details Knob with soft plastic cover Knob with soft plastic cover

1993-11-03

1995-11-28

Marmor, Charles A.

Machine element or mechanism

Control lever and linkage systems

Elements

16118, 16121, 16DIG19, G05G 110

Patent

active

054697581

ABSTRACT:
A composite knob having an elongated, cylindrical, inner core molded of a relatively stiff plastic and a partial outer covering of a soft resilient plastic molded to the inner core. Anchoring cavities are provided in ribs of the inner core to receive plugs of the soft plastic of the outer covering to anchor the outer covering to the inner core. In a modified embodiment, the ribs are tapered axially rearwardly and the outer covering is formed with rib-like extensions to engage said tapered ribs.

REFERENCES:
patent: 2071147 (1937-02-01), Watson
patent: 2425611 (1947-08-01), Frost et al.
patent: 3468020 (1969-09-01), Carlson et al.
patent: 3543329 (1970-12-01), Gulette et al.
patent: 4094210 (1978-07-01), Wirtz et al.
patent: 4165659 (1979-08-01), Fawley

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