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Class Information
Number: 137/383
Name: Fluid handling > With lock or seal
Description: Apparatus including a lock means which prevents unauthorized use or adjustment or a sealing means the breaking of which indicates unauthorized use or adjustment.










Sub-classes under this class:

Class Number Class Name Patents
137/384.2 Common lock and valve actuator 28
137/385 Locks against rotary motion 151
137/384 With seal 33


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8678028 Locking device Mar. 25, 2014
8561635 Hydrant security system Oct. 22, 2013
8561847 Dispenser housing with locking mechanism Oct. 22, 2013
8517048 Flow control valves Aug. 27, 2013
8499784 Lock valve in particular for a strip processing unit Aug. 6, 2013
8459293 Ampoule with integrated hybrid valve Jun. 11, 2013
8413851 Security device for storage tanks Apr. 9, 2013
8381751 Automated dump station Feb. 26, 2013
8353309 Hydrant lock Jan. 15, 2013
8347921 Parallel type valve assembly Jan. 8, 2013
8104503 Optimized activation prevention mechanism for a gas delivery system and methods therefor Jan. 31, 2012
7967024 Hydraulic valve assembly with valve locking mechanism Jun. 28, 2011
7874311 Water valve locking device Jan. 25, 2011
7845367 Lock device for operation pattern selecting valve Dec. 7, 2010
7771381 Shunt valve locking mechanism Aug. 10, 2010
7628168 Optimized activation prevention assembly for a gas delivery system and methods therefor Dec. 8, 2009
7509972 Pneumatic valve with lockout Mar. 31, 2009
7478646 Valve outlet enclosure device Jan. 20, 2009
7390310 Shunt valve locking mechanism Jun. 24, 2008
7334594 Apparatus and method for adjusting a locking mechanism of a shunt valve Feb. 26, 2008
7316244 Solenoid valve with manual buttons Jan. 8, 2008
7252059 Closure assembly for a camshaft phaser Aug. 7, 2007
7216667 Valve opening/closing handle lock mechanism May. 15, 2007
7140211 Tamper detection security for a tank trailer Nov. 28, 2006
7044430 Lock bars for blowout preventer May. 16, 2006
7013916 Sub-atmospheric gas delivery method and apparatus Mar. 21, 2006
7007712 Pneumatic tool lock Mar. 7, 2006
6997209 Locking device of an air-operated normally-closed valve for a gas cylinder Feb. 14, 2006
6926024 Utility valve box lockout device Aug. 9, 2005
6893002 Lockout valve May. 17, 2005
6886593 Safety valve with pressure indicator May. 3, 2005
6854302 Pneumatic tool lock Feb. 15, 2005
6820638 Air manifold apparatus Nov. 23, 2004
6802338 Fire hydrant securing arrangements Oct. 12, 2004
6786230 Valve lock Sep. 7, 2004
6742763 Linear spring-loaded actuator for a valve Jun. 1, 2004
6695003 Gas isolation box Feb. 24, 2004
6662822 One-way nut fastener Dec. 16, 2003
6644313 Breathing assistance apparatus Nov. 11, 2003
6626204 Cylinder valve assembly with check valve Sep. 30, 2003
6578600 Gas isolation box Jun. 17, 2003
6367502 Flow control device Apr. 9, 2002
6273125 Compression key lockout device for a gate valve Aug. 14, 2001
6257273 Adjustable lockout device for knife gate valves Jul. 10, 2001
6209575 Tamper proof set screw Apr. 3, 2001
6164318 Valve locking system Dec. 26, 2000
6116278 Lockout valve Sep. 12, 2000
6079957 Soft start valve Jun. 27, 2000
6068020 Gas line safety device May. 30, 2000
6041813 Manually actuated diaphragm valve with lockout feature for open and closed positions Mar. 28, 2000

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