Control by change of position or inertia of system > Position relative body of water (e.g., marine governors) > Pressure or head controlled > Patents

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Class Information
Number: 137/42
Name: Fluid handling > Control by change of position or inertia of system > Position relative body of water (e.g., marine governors) > Pressure or head controlled
Description: Apparatus which includes means to sense the pressure or head of the body of water in which the system exists.

Patents under this class:

Patent Number	Title Of Patent	Date Issued
6164922	Flow control valve for a pump for conveying a medium	Dec. 26, 2000
6085779	Draining gutter	Jul. 11, 2000
5819328	Hydrostatic drain plug	Oct. 13, 1998
4125129	Fixed and variable resistance fluid throttling apparatus	Nov. 14, 1978
4121771	Drip irrigation emitter	Oct. 24, 1978
4120033	Apparatus and method for determining pumping system head curves	Oct. 10, 1978