Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/614.21
Name: Fluid handling > Systems > Flow path with serial valves and/or closures > Coaxial oppositely directed seats
Description: Systems in which two valve seats are provided in coaxial relationship, each seat having a separately actuatable head associated therewith.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8627849 Valve having two opposing self-sealing poppets Jan. 14, 2014
8413682 Fluid valves having an integral safety shut-off Apr. 9, 2013
8286653 Method and arrangement for eliminating the risk of leakage from a first one to a second one of two fluid systems Oct. 16, 2012
8240634 High-pressure valve assembly Aug. 14, 2012
8240328 Automatic fluid spill prevention and shut off safety valve Aug. 14, 2012
8104508 Valve device assembling structure, plug body, and manual valve Jan. 31, 2012
8033294 Fluid valves having an integral safety shut-off Oct. 11, 2011
7730735 Refrigerant service port valve for air conditioners Jun. 8, 2010
7726337 Shut-off and reversing valve Jun. 1, 2010
7634856 Method of assembling gas flow control valve Dec. 22, 2009
7533729 Reverse cementing float equipment May. 19, 2009
7484522 Method to control starter/generator cooling fuel flow during engine starting Feb. 3, 2009
7469707 Irrigation control valve and system Dec. 30, 2008
7252109 Safety device for a lighting valve of a gas burner Aug. 7, 2007
7213613 High-flow dual poppet valve having equalized closing forces May. 8, 2007
7140384 Substrate processing equipment having mass flow controller Nov. 28, 2006
7111642 Valve having fast and slow acting closure elements Sep. 26, 2006
6983894 Piezo-electrically actuated canister purge valve with a hydraulic amplifier Jan. 10, 2006
6957655 Apparatus for dosage control Oct. 25, 2005
6880564 Dosage control apparatus Apr. 19, 2005
6805154 Freeze protection device for wall hydrants/faucets Oct. 19, 2004
6797156 Faucet water treatment Sep. 28, 2004
6769446 Freeze protection device for wall hydrants/faucets Aug. 3, 2004
6708716 Valve assembly Mar. 23, 2004
6644330 Unidirectional retroaction electromagnetic valve Nov. 11, 2003
6532986 Freeze protection device for wall hydrants/faucets Mar. 18, 2003
6446657 Aircraft air control valve apparatus Sep. 10, 2002
6244291 Process sampling selection valves Jun. 12, 2001
6192923 Electromagnetic flow control device Feb. 27, 2001
6182696 Dual isolation valve with rectangular flow passageways Feb. 6, 2001
6173735 Method and apparatus for regulating gas flow Jan. 16, 2001
6062246 Mass flow controller and operating method thereof May. 16, 2000
5901729 Material flow control arrangement and method May. 11, 1999
5894859 Compressed gas emergency shutoff valve Apr. 20, 1999
5878773 Auxiliary flow path valve Mar. 9, 1999
5863023 Valved coupling for ultra high purtiy gas distribution system Jan. 26, 1999
5823229 Faucet having multiple water discharges Oct. 20, 1998
5810031 Ultra high purity gas distribution component with integral valved coupling and methods for its use Sep. 22, 1998
5803556 Hydraulic brake system with skid control Sep. 8, 1998
5799825 Gate seal system Sep. 1, 1998
5794666 Gaseous fuel filling structure and filling method using the same Aug. 18, 1998
5762142 Coiled tubing apparatus Jun. 9, 1998
5743296 Valve mechanism with constraint guide means Apr. 28, 1998
5727605 Device for filling the reservoir of a spray for plant-protection products Mar. 17, 1998
5715863 Tube quick disconnector Feb. 10, 1998
5704393 Coiled tubing apparatus Jan. 6, 1998
5699832 Faucet water input connection Dec. 23, 1997
5669409 Gas-pressure controller Sep. 23, 1997
5664759 Valved coupling for ultra high purity gas distribution systems Sep. 9, 1997
5665894 Instrument calibrating demand flow regulator Sep. 9, 1997

1 2 3










 
 
  Recently Added Patents
Clip
Cellulose acylate laminate film, method for producing cellulose acylate laminate film, polarizer and liquid crystal display device
Reliable event broadcaster with multiplexing and bandwidth control functions
Mixture, especially spinning solution
Vehicle and communication monitoring
Implantable defibrillator systems and methods with mitigations for saturation avoidance and accommodation
Digital camera supporting intelligent self-timer mode and method of controlling the same
  Randomly Featured Patents
Quinolines useful as modulators of ION channels
Use of acrylates copolymer as waterproofing agent in personal care applications
Bat having fiber/resin handle and metal hitting member and method of making
Method of creating NC program for pocket machining
Zoom lens barrel assembly for constant magnification
Time multiplexing a plurality of configuration settings of a programmable switch element in a FPGA
Wall anchor for a screw, and assembly constituted by such a wall anchor and a screw
Auto focus camera, lens apparatus and camera system with a vibration motor drive
Stress-indicating rope-tightening apparatus
Well valve