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Class Information
Number: 137/630.16
Name: Fluid handling > Systems > Sequentially progressive opening or closing of plural valves > With subsequent closing of first opened port
Description: Systems in which, after the sequentially actuated valves are opened, the first opened valve is closed.

Sub-classes under this class:

Class Number Class Name Patents
137/630.17 Simultaneously moved port controllers 5

Patents under this class:

Patent Number Title Of Patent Date Issued
8678034 Space-saving quick acting control valve for a steam turbine Mar. 25, 2014
8622088 Solenoid valves capable of controlling valve-opening area Jan. 7, 2014
8312897 Diverter valve Nov. 20, 2012
7740026 Thermal storage type gas treating apparatus Jun. 22, 2010
7284566 Valve arrangement for guiding a liquid against a gas pressure gradient Oct. 23, 2007
6041809 Two stage flush control valve assembly Mar. 28, 2000
5964094 Method and apparatus for mixing liquefied gases Oct. 12, 1999
5347992 Single axis three way selector valve for endoscopes Sep. 20, 1994
4586591 Pressure-fluid-operable vehicle brake system May. 6, 1986

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