Device for controlling the flow of fluid

Details Device for controlling the flow of fluid Device for controlling the flow of fluid

A - Human Necessities

01

G

222/11, 251/18

A01G 25/16 (2006.01) G01F 11/00 (2006.01) G01F 15/00 (2006.01)

Patent

CA 1150204

ABSTRACT OF THE DISCLOSURE A device to control the flow of fluid uses a cam and ratchet wheel. A valve is operated by the cam portion of the wheel, which bears against the valve stem causing it to open. Fluid flow causes a pawl to drive the ratchet portion of the wheel, rotating the wheel until the valve stem bears against a low point in the cam, permitting the valve to close. A part of the ratchet portion does not contain ratchet teeth, in which area the pawl cannot drive the wheel. In this area, the cam has an increasing radius from a radius corresponding to a closed valve, to a radius corresponding to a fully open valve. This permits manual control of fluid flow without disengagement of the device.

374668

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