Hollow knob

Details Hollow knob Hollow knob

1976-01-29

1977-01-04

Kundrat, Andrew V.

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

Sash balances

Spring

292347, 74553, E05B 100

Patent

active

040005399

ABSTRACT:
A hollow knob is provided for use on control shafts and the like. The knob comprises two hollow sections of plastic material and a metal insert threaded for receipt of a control rod or the like. The two hollow knob sections are provided with reinforcing ribs running at right angles to one another, and readily secured at crossover points by means of sonic welding. The metal insert is held securely in place in a well in one of the two plastic portions, being firmly trapped in place, and reinforcing the plastic sections.

REFERENCES:
patent: 1568883 (1926-01-01), Danielson
patent: 1925030 (1933-08-01), Burke
patent: 2199018 (1940-04-01), Bahr
patent: 2633758 (1953-04-01), Hobson et al.

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