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Class Information
Number: 251/89
Name: Valves and valve actuation > With means for blocking or disabling actuator
Description: Subject matter wherein means are provided for detaining, blocking or disabling a valve actuator, the actuator being restrained against motion away from the point at which the detent or holding means engages it.










Sub-classes under this class:

Class Number Class Name Patents
251/89.5 Actuator, or blocking means, includes flow path joint 40
251/90 Attachments 140
251/94 Fluid pressure biased latch 51
251/101 Latch manipulator mounted on handle or stem 29
251/111 Latch manipulator mounted on valve body 53
251/95 Released by non-valving actuator motion 116


Patents under this class:
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Patent Number Title Of Patent Date Issued
8539980 Device for controlled operation of a surgical or dental drive unit Sep. 24, 2013
8465001 Plug valve indicator Jun. 18, 2013
8360391 Metal sealing, stem locking mechanism Jan. 29, 2013
8256460 Device for controlled operation of a surgical or dental drive unit Sep. 4, 2012
8066682 Eye drops container Nov. 29, 2011
7913714 Check valve and shut-off reset device for liquid delivery systems Mar. 29, 2011
7905873 Port assembly for use with needleless connector Mar. 15, 2011
7708025 Poppet valve member May. 4, 2010
7708254 Actuator apparatus for operating and locking a control valve and a method for its use May. 4, 2010
7711453 Positioning control system and filter May. 4, 2010
7621336 Casing shoes and methods of reverse-circulation cementing of casing Nov. 24, 2009
7621337 Casing shoes and methods of reverse-circulation cementing of casing Nov. 24, 2009
7516910 Pressure washer trigger lock Apr. 14, 2009
7341238 Device for locking out a pressurized storage container and method for the same Mar. 11, 2008
7126464 Method and apparatus for controlling a valve during a hazard event Oct. 24, 2006
7083157 Valve with lock-out mechanism and method of using the same Aug. 1, 2006
7007918 Valve opening-closing timing control device Mar. 7, 2006
6935355 Small scale actuators and methods for their formation and use Aug. 30, 2005
6924733 Hose separation transmitter system and methods Aug. 2, 2005
6896239 Method and apparatus for locking a valve May. 24, 2005
6809651 Protective beacon Oct. 26, 2004
6799597 Pressure control system which detects and abates overpressure and underpressure conditions in a pressurized fluid Oct. 5, 2004
6789561 Excess-flow valve Sep. 14, 2004
6626204 Cylinder valve assembly with check valve Sep. 30, 2003
6617954 Tamper resistant temperature controller for a gas-fired heating device Sep. 9, 2003
6561479 Small scale actuators and methods for their formation and use May. 13, 2003
6398184 Lock device and lock method for knife gate valves Jun. 4, 2002
6361017 Locking valve with joint allowing packing service Mar. 26, 2002
6349854 Utility-power operated pressurized spray can Feb. 26, 2002
6328068 Push-pull coupling Dec. 11, 2001
6164330 Valve having a flow blocking rotary body Dec. 26, 2000
6082393 Emergency shutoff valve exerciser for steam turbine and methods for installing and operating same Jul. 4, 2000
6047946 Blocking structure for preventing actuation of a valve for pressurized containers Apr. 11, 2000
6036169 Self alignable threaded cap and threaded pressure relief valve Mar. 14, 2000
5967186 Valve Oct. 19, 1999
5850943 Utility-power operated tamper-proof pressurized spray can Dec. 22, 1998
5845824 Beverage dispenser with electrically controlled clutch Dec. 8, 1998
5647573 High pressure fluid valve assembly Jul. 15, 1997
5603433 Anti-graffiti security device for aerosol dispenser cans Feb. 18, 1997
5595367 Automatic holding device for gasoline pump handles Jan. 21, 1997
5566715 Flood prevention valve Oct. 22, 1996
5564675 Subsurface safety valve of minimized length Oct. 15, 1996
5556329 Chimney damper with locking mechanism Sep. 17, 1996
5375625 Valve body assembly with detent and locking mechanism Dec. 27, 1994
5335758 Anti-theft vehicle brake supervising device Aug. 9, 1994
5238221 Plug-in coupling for hoses Aug. 24, 1993
5205312 Fire hydrant locking arrangement Apr. 27, 1993
5176298 Tap head for keg fittings Jan. 5, 1993
5152145 Turbocharger waste gate brake and system therefor Oct. 6, 1992
5074441 Liquid container closure lockable in the open position Dec. 24, 1991

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