Valves and valve actuation – Pedal actuator
Patent
1994-12-22
1998-02-10
Walton, George L.
Valves and valve actuation
Pedal actuator
251244, 74512, 112282, F16K 3162, D05B 8100
Patent
active
057160392
ABSTRACT:
The actuating lever of this invention is intended for use with an air valve having a normally extending valve stem. The actuating lever has utility in many fields. One illustrated embodiment is described in association with an air valve in the waste removal system of a sewing machine, wherein it is desired that the air valve be activated before the sewing machine is activated by depression of a treadle. It is normally desired to initiate the flow of compressed air to create a suction for the removal of waste generated by operation of the sewing machine before the sewing machine is started. The configuration of the actuating lever provides a mechanical advantage that, in the illustrated embodiment, enables the valve stem of the air valve to be depressed with less pressure on the treadle than was required in the prior art, and with less pressure than is required to start the motor of the sewing machine. The flow of compressed air and the creation of suction for waste removal before activation of the sewing machine motor is assured by the actuating lever.
REFERENCES:
patent: 1970039 (1934-08-01), Fraser
patent: 2095200 (1937-10-01), Thompson
patent: 2881784 (1959-04-01), Bryant
patent: 2929405 (1960-03-01), Beebe
patent: 3853079 (1974-12-01), Dunne
patent: 4709645 (1987-12-01), Jones et al.
patent: 4764058 (1988-08-01), Jones et al.
patent: 5199119 (1993-04-01), Weber
Hunt Clifton Ted
Templex, Inc.
Walton George L.
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