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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
8323573 Microfluidic cartridge with solution reservoir-pump chamber Dec. 4, 2012
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

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