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Class Information
Number: 137/879
Name: Fluid handling > Systems > With flow control means for branched passages > Biased valve > Spring bias > For valve having a ball head
Description: System wherein fluent material flow control means employs a substantially spherical member to regulate flow.

Patents under this class:

Patent Number Title Of Patent Date Issued
7484531 Middle ear pressure equalizing device with improved pressure control Feb. 3, 2009
6742543 Method and apparatus for reducing operating costs and emissions in a pumping installation Jun. 1, 2004
5810115 Pressure bypass accessory for a series progressive divider valve Sep. 22, 1998
5785072 Compressed stopper channel bypass pipe burst pressure relief apparatus for plumbing fixtures Jul. 28, 1998
5551473 Thermal expansion relief valve Sep. 3, 1996
5299592 High pressure relief system Apr. 5, 1994
5085249 Valve for a vascular dilating device Feb. 4, 1992
4865079 High pressure hydraulic flow control valve Sep. 12, 1989
4825909 High pressure hydraulic flow control valve May. 2, 1989
4723575 Solenoid valve Feb. 9, 1988
4630527 Electro-hydraulic height corrector for motor vehicles Dec. 23, 1986
4627465 Color changer Dec. 9, 1986
4453569 Check valve with inspection means Jun. 12, 1984
4281681 Diverter attachment for water-powered appliance Aug. 4, 1981
4258749 Dual solenoid vacuum modulator Mar. 31, 1981
4011888 Unitary elevator up level control valve Mar. 15, 1977
3948045 Air control valve Apr. 6, 1976

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