Title: Control valves

Abstract: A simple and rugged three-way valve is provided which may be used as a trigger-operated control valve for portable pneumatic tools. The valve utilizes a valve member which is slidably disposed in a valve chamber for reciprocal movement between two valve seats and is tapered at its periphery so that it cannot obstruct a side port that is located between the valve seats.

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Inventors: Haytayan, Harry M. (Lincoln, MA, US)

Application Number: 641024
Filing Date: 1975-12-15
Publication_date: 1977-10-04
Assignee:
Primary Class(es): 137/454.2 137/625.27
Other Classes:
US Patent Ref:

2154477	Apr, 1939	Sinclair	137/625.
2645451	Jul, 1953	Gladden	137/625.
2963038	Dec, 1960	Sharp	137/454.
2971090	Feb, 1961	Piet et al.	137/625.
2977989	Apr, 1961	Meynell	137/625.
3727631	Apr, 1973	Suezawa	137/625.

Other Refs: 1,063,631

Aug, 1959	DT

Primary Examiner: Cohan, Alan
Assistant Examiner:
Attorney: Schiller & Pandiscio