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Class Information
Number: 137/557
Name: Fluid handling > With indicator, register, recorder, alarm or inspection means > Fluid pressure responsive indicator, recorder or alarm
Description: Apparatus provided with a visual indicator, audible alarm or recorder which is responsive to the pressure of the fluid in the flow path.


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
7600525 Leak detection and isolation for segmented inflatable structures Oct. 13, 2009
7565916 Pneumatic oscillating valve and pneumatic warning device Jul. 28, 2009
7546846 Pressure regulator Jun. 16, 2009
7533703 Determining fuel usage May. 19, 2009
7520835 Fluid circuit module and automatic transmission Apr. 21, 2009
7499761 Variable function voting solenoid-operated valve apparatus having air-to-move valve actuators and testing method therefor Mar. 3, 2009
7490624 Passive pressure activation valve Feb. 17, 2009
7481237 System and method for monitoring the performance of an inert gas distribution system Jan. 27, 2009
7450021 Vacuum system capacity analyzer Nov. 11, 2008
7448594 Fluid regulator Nov. 11, 2008
7441562 Electromagnetic valve and fluid control apparatus Oct. 28, 2008
7411184 Microfluidic device comprising an electrospray nose Aug. 12, 2008
7401572 View around flow indicator Jul. 22, 2008
7395837 Multiplexed pressure switch system for an electrically variable hybrid transmission Jul. 8, 2008
7392824 Fluid power device with a pressure regulator Jul. 1, 2008
7387080 Pneumatic actuator movement indicator Jun. 17, 2008
7383851 Closed loop pressure control system and electrically operated pressure control valve with integral pressure sensor and method of making same Jun. 10, 2008
7334602 Apparatus for controlling flow rate of gases used in semiconductor device by differential pressure Feb. 26, 2008
7328719 Valve state sensing module Feb. 12, 2008
7270143 Offset variable-orifice flow sensor Sep. 18, 2007
7264018 Pressure regulator Sep. 4, 2007
7260496 Pressure detector and method of diagnosing blockage of impulse lines Aug. 21, 2007
7258140 Portable pressurized gas supply apparatus for pneumatic equipment Aug. 21, 2007
7255127 Vacuum regulator and intermittent flow device Aug. 14, 2007
7243670 Microfluidic system Jul. 17, 2007
7219688 Fluid control valve May. 22, 2007
7216714 Modular, distributed, ROV retrievable subsea control system, associated deepwater subsea blowout preventer stack configuration, and methods of use May. 15, 2007
7168333 Monitoring system for pressurized container Jan. 30, 2007
7159608 Manifold system and method for compressed medical gases Jan. 9, 2007
7158372 Electronic control unit Jan. 2, 2007
7152624 Flow control valve for cylinders of liquefied gases, having a means for indicating the status of the fluid Dec. 26, 2006
7145467 Medical gas alarm system Dec. 5, 2006
7134449 Flow control valve with device for indicating the status of a fluid, particularly for gas containers Nov. 14, 2006
7114511 System and method for a mass flow controller Oct. 3, 2006
7114520 Pressure regulator Oct. 3, 2006
7107822 Apparatus and method for on-line detection of leaky valve seals and defective flow diverters Sep. 19, 2006
7096881 Digital pressurization compound terminal Aug. 29, 2006
7080695 Fire extinguisher Jul. 25, 2006
7066202 Indicator-equipped flow regulating valve Jun. 27, 2006
7055546 Fluid intake pressure regulating system Jun. 6, 2006
7055547 Circuit balancing valve Jun. 6, 2006
7051570 System and method for monitoring a pressurized system May. 30, 2006
7051762 One-way valve May. 30, 2006
7032606 Manifold system and method for compressed medical gases Apr. 25, 2006
7032611 Pressure regulator and method of use Apr. 25, 2006
7025088 Providing an indication of the position of a valve member Apr. 11, 2006
7013906 System for monitoring and operating valve manifolds and method therefore Mar. 21, 2006
7007713 Pressure control apparatus Mar. 7, 2006
6997209 Locking device of an air-operated normally-closed valve for a gas cylinder Feb. 14, 2006
6987448 Medical gas alarm system Jan. 17, 2006

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