Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Construction
Class Information
Number: 138/30
Name: Pipes and tubular conduits > With pressure compensators > Variable capacity chambers
Description: Devices in the form of a chamber whose capacity is variable usually by means of a flexible diaphragm or sliding plunger.










Sub-classes under this class:

Class Number Class Name Patents
138/31 Piston or plunger type 306


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14

Patent Number Title Of Patent Date Issued
8701398 Strain energy accumulator Apr. 22, 2014
8701402 Reservoir-less power steering system Apr. 22, 2014
8701712 Method and apparatus for mitigating undesired fluid vibration Apr. 22, 2014
8677742 Accumulator with solenoid valve Mar. 25, 2014
8671993 Flexible short pipe having shock absorbing function Mar. 18, 2014
8656959 Hydraulic accumulator Feb. 25, 2014
8656960 Hydraulically controlled accumulator-chamber valve Feb. 25, 2014
8602063 Gas over liquid accumulator Dec. 10, 2013
8592063 Battery pack pressure valve Nov. 26, 2013
8578970 Pressure-compensated accumulator bottle Nov. 12, 2013
8567444 Accumulator assembly Oct. 29, 2013
8549924 Pressure compensator Oct. 8, 2013
8539984 Hydraulic accumulator, in particular a membrane accumulator Sep. 24, 2013
8529532 Reduced pressure therapy devices Sep. 10, 2013
8517057 Pump installations Aug. 27, 2013
8499796 Pipeline pressure stabilization apparatus and method Aug. 6, 2013
8496030 Hydraulic accumulator, especially pulsation damper Jul. 30, 2013
8479774 Accumulator with single direction seal Jul. 9, 2013
8474488 Low pressure accumulator for anti-lock brake system Jul. 2, 2013
8458904 Fluid conduit assembly Jun. 11, 2013
8443841 Guiding device for a metal bellows May. 21, 2013
8439080 Pressure compensator May. 14, 2013
8439081 High flow nozzle system for flow control in bladder surge tanks May. 14, 2013
8434524 Elastic hydraulic accumulator/reservoir system May. 7, 2013
8418726 Pressure tank, in particular hydraulic accumulator Apr. 16, 2013
8418727 Hydraulic accumulator and method of manufacture Apr. 16, 2013
8397681 Expansion tank for vehicle cooling system Mar. 19, 2013
8387665 Combination spring and gas filled accumulator Mar. 5, 2013
8371336 Accumulator Feb. 12, 2013
8365772 Accumulator Feb. 5, 2013
8360107 Pressure compensating device for fluid-conducting systems Jan. 29, 2013
8360743 Rotary pressure production device Jan. 29, 2013
8323008 Pumps and pump-heads comprising internal pressure-absorbing member Dec. 4, 2012
8307855 Fluid pressure spike suppression device Nov. 13, 2012
8291937 Accumulator membrane unit, method for production thereof and rock drilling machine including such an accumulator membrane unit Oct. 23, 2012
8291938 Pressure-compensated accumulator bottle Oct. 23, 2012
8267123 Methods and apparatus to charge accumulator apparatus Sep. 18, 2012
8201582 Hydropneumatic accumulator with a compressible regenerator Jun. 19, 2012
8196602 Water distribution system for cold climates Jun. 12, 2012
8176940 Pressure accumulator, in particular pulsation damper May. 15, 2012
8171959 Dampener apparatus and method May. 8, 2012
8100148 Hydro sound damper, in particular for integration in an aircraft hydraulic system Jan. 24, 2012
8096324 Accumulator Jan. 17, 2012
8056582 System of stepped flow rate regulation using compressible members Nov. 15, 2011
7992902 Air hose end-connector fitting for winter operation of service station tire inflator machines Aug. 9, 2011
7992592 Spring-tensioned piston accumulator with detent function Aug. 9, 2011
7984731 Lightweight high pressure repairable piston tie rod composite accumulator Jul. 26, 2011
7975725 Spring-loaded piston accumulator with locking function Jul. 12, 2011
7971608 Breathable low pressure accumulator Jul. 5, 2011
7959237 Brake booster supplied by an air conditioning circuit Jun. 14, 2011

1 2 3 4 5 6 7 8 9 10 11 12 13 14










 
 
  Recently Added Patents
System and method for order placement in an electronic trading environment
Method for automatically estimating inertia in a mechanical system
Hedge shear
Electronic package with fluid flow barriers
Variety corn line NPAA2720
Method of operating an election ballot printing system
Signal judgment method, signal judgment apparatus, program, and signal judgment system
  Randomly Featured Patents
Cosmetic compositions containing N-alkylacrylamide or N-alkylmethacrylamide based copolymers
Method for fabricating array-molded package-on-package
Using TTS to fill in for missing dictation audio
Fluid-filled active vibration damping device
Human aminoacyl-tRNA synthetase polypeptides useful for the regulation of angiogenesis
Fuel injection apparatus
Capping machine
Multi-can carrier
Noise detector and data signal receiver for a frequency modulation system
Skills-based scheduling for telephone call centers