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Class Information
Number: 137/384.6
Name: Fluid handling > With lock or seal > Common lock and valve actuator > Biased valve
Description: Devices in which the valve head is biased to or from the open position.

Patents under this class:

Patent Number Title Of Patent Date Issued
8602506 Air brake locking device and system Dec. 10, 2013
7007712 Pneumatic tool lock Mar. 7, 2006
5966970 Lockable fuel valve Oct. 19, 1999
4928506 Anti-theft locking valve for motor vehicles May. 29, 1990
4658608 Security valve mechanism for a hydraulic system Apr. 21, 1987
4489748 Lockable apparatus for deactivating a hydraulic system Dec. 25, 1984
4402339 Lockable valve for hydraulic system Sep. 6, 1983
4208032 Closing device with valve having a high speed reaction Jun. 17, 1980
4131127 Locking valve Dec. 26, 1978
3965916 Apparatus and method for gagging a relief valve within a flue secured to a tank Jun. 29, 1976

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