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Class Information
Number: 137/329.2
Name: Fluid handling > With repair, tapping, assembly, or disassembly means > Removable valve with normally disabled supplemental check valve > Check valve disabled by normally movable main valve part
Description: Devices in which the check valve is biased opened by a part of the main valve which is movable in normal usage of the main valve. Usually a spacer or projection between the check valve and main valve is provided.

Sub-classes under this class:

Class Number Class Name Patents
137/329.3 Ball check 16
137/329.4 Spring bias 18

Patents under this class:

Patent Number Title Of Patent Date Issued
6062537 Fast pipe joint May. 16, 2000
5911404 Automatic fluid stopper and fluid stopper mounting spanner Jun. 15, 1999
5904174 Auxiliary tap valve May. 18, 1999
5787921 Gas container valve Aug. 4, 1998
5628340 Automatic valve May. 13, 1997
5628492 Faucet connector device May. 13, 1997
5344119 Hose coupling Sep. 6, 1994
5110088 Water-control stopper May. 5, 1992
4558819 Automatic valve closer to prevent tampering with a thermostatic controlled radiator Dec. 17, 1985

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