Audible signal valve knob

Details Audible signal valve knob Audible signal valve knob

1981-04-21

1983-12-06

Yasich, Daniel M.

Signals and indicators

Alarms

Fluid-pressure variation

99344, 126388, G01L 1912, A47J 2752

Patent

active

044186371

ABSTRACT:
A knob for a cooking vessel is a whistle which gives an audible signal that cooking temperature has been reached, and has a valve slide assembly including a separate leaf spring for shutting off the whistle. Supporting inside and outside knob parts incorporate halves of a resonance chamber, which makes the knob extremely simple to mold, assemble, clean, and disassemble. The valve slide rests in guides which make it impossible to assemble incorrectly, and is overlaid by a knob cover. The leaf spring biases the valve slide against the top wall of the resonance chamber so that when the slide valve is closed the passage from the resonance chamber to the ambient air is effectively blocked.

REFERENCES:
patent: 906594 (1908-12-01), White et al.
patent: 1811853 (1931-06-01), Landman
patent: 1943834 (1934-01-01), Meneghette
patent: 4134358 (1979-01-01), Heermans
patent: 4215646 (1980-08-01), Williams

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