Fluid handling – Systems – Programmer or timer
Patent
1986-01-27
1986-12-23
Cohan, Alan
Fluid handling
Systems
Programmer or timer
251 20, 251 28, 251 57, 251289, 251295, 251 65, F16K 31326
Patent
active
046306447
ABSTRACT:
An improved, remote controlled valve and dual push button assembly, having a hand operated push button which, when depressed and released, opens a water valve for a predetermined length of time after which the valve closes. The valve is also connected to a foot operated push button which, when depressed, holds the valve in an open configuration as long as the foot button is depressed. The improved valve and button assembly provides an air flow path through the foot button when the foot button is not depressed. The air flow path utilizes a hole in a diaphragm of the foot button which communicates with an air flow path in the base of the piston which depresses the foot button diaphragm. The disclosure also includes a check valve held in the needle valve which is a part of the timing mechanism of the hand operated button. The check valve prevents the flow of air out through the needle valve and permits air to only flow in through the needle valve.
REFERENCES:
patent: 2839264 (1958-06-01), Trubert
patent: 2966328 (1960-12-01), Burnworth
patent: 2997851 (1961-08-01), Trubert et al.
patent: 3117761 (1965-01-01), Billeter
Hafner V. Walter
Hahn Ron T.
Marshall Keith D.
Sally Theodore J.
Acorn Engineering Company
Averill, Jr. Edgar W.
Cohan Alan
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