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Class Information
Number: 137/637.1
Name: Fluid handling > Systems > Valves with separate, correlated, actuators > Interlocked
Description: Devices having plural actuators with interlocking means therebetween, whereby the actuation of one valve is prerequisite to the actuation of another or additional valves, or whereby the opening of one valve precludes the opening of another until such time as the first opened valve has been closed.










Patents under this class:
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Patent Number Title Of Patent Date Issued
8684033 Two-shutter valve Apr. 1, 2014
8646473 Electro-hydraulic sensor fail safe Feb. 11, 2014
8602506 Air brake locking device and system Dec. 10, 2013
8561645 Two-shutter three-way valve Oct. 22, 2013
8448667 Multi-function pull-out wand May. 28, 2013
8430128 Interlocking tubing clamps Apr. 30, 2013
8387660 Split flow valve arrangement Mar. 5, 2013
8011389 Manifold valve Sep. 6, 2011
7992589 Dual butterfly valve driven by a common drive motor Aug. 9, 2011
7874315 Multi-channel, multi-phase flow metering valve Jan. 25, 2011
7762281 Storage and dispensing bin Jul. 27, 2010
7743946 Method and apparatus for switching flow circuits in a product dispenser Jun. 29, 2010
7472700 Adaptor for releasably mounting a vaporizer on an anesthesia machine Jan. 6, 2009
7343935 Gas flow control flap operating mechanism Mar. 18, 2008
7240695 Multi-channel pintle valve Jul. 10, 2007
6962176 Portable suction system Nov. 8, 2005
6550368 Fluid power interlock system Apr. 22, 2003
6415819 Switching unit which is composed of a set of switching valves and is suitable for making a first and second medium flow through one of two plate coolers as desired Jul. 9, 2002
6021803 Tapping point including a mixer for cold and hot water Feb. 8, 2000
5794647 Valve system Aug. 18, 1998
5704398 Valve linkage system Jan. 6, 1998
5615707 Apparatus for jointly actuating a pair of valves Apr. 1, 1997
5590684 Dual pilot manifold assembly for a safety relief valve Jan. 7, 1997
5588717 Valve utilizing shape memory alloys and an anti-lock brake system with the valve Dec. 31, 1996
5251661 Remote filling device for an oil tank Oct. 12, 1993
5203373 Foot-actuated valves Apr. 20, 1993
5197515 Aircraft waste system drain valve Mar. 30, 1993
5117867 Manifold for a differential pressure transmitter Jun. 2, 1992
5036816 Load adjustment device Aug. 6, 1991
4982734 Anaesthesia equipment Jan. 8, 1991
4971092 Pivotal control housing Nov. 20, 1990
4932398 Anaesthetic vaporizer interlock system and connector for anaesthetic apparatus Jun. 12, 1990
4890643 Bi-directional sealing valve Jan. 2, 1990
4877059 Valve Oct. 31, 1989
4860792 Electromagnetic control valve Aug. 29, 1989
4846225 Transmission assembly for use with double block and bleed system Jul. 11, 1989
4844127 Actuating mechanism for a transmission control system Jul. 4, 1989
4834287 Pressure relief before or upon electric shut off of pump May. 30, 1989
4823843 Valve apparatus Apr. 25, 1989
4799510 Valve for use in controlling the functions of mine roof supports Jan. 24, 1989
4759358 Gas administration apparatus Jul. 26, 1988
4744385 Water supply and waste removal system for a vehicle May. 17, 1988
4729408 Control system for independent control of fluid actuated devices Mar. 8, 1988
4688602 Pneumatic control device for controlling pneumatic system Aug. 25, 1987
4643392 Valves Feb. 17, 1987
4633908 Manually operated mode-selecting valve device Jan. 6, 1987
4553446 Control device Nov. 19, 1985
4552181 High speed dump valve for fire fighting apparatus Nov. 12, 1985
4543984 Truck trailer brake airline lock Oct. 1, 1985
4543991 Electromagnetic double-valve for controlling the flow of two different materials Oct. 1, 1985

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