Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/450
Name: Fluid handling > Liquid level responsive or maintaining systems > By float controlled valve > Float arm operated valve > Balanced valves
Description: Apparatus in which the valve controlled by the float arm is designed in such a manner that fluid pressure is exerted on opposing surfaces of the valve so that the forces acting on the valve as a result of flow or pressure in the line are neutralized or balanced, and thus a smaller force is necessary to actuate the valve.

Patents under this class:

Patent Number Title Of Patent Date Issued
6953026 Pressure regulating valve for automotive fuel system Oct. 11, 2005
5551466 Hydraulic valve Sep. 3, 1996
5427137 Fluid shut off valve and fill level indication Jun. 27, 1995
5207241 Liquid shut-off valve May. 4, 1993
5205320 Flow rate control unit Apr. 27, 1993
5121767 Automatic drain valve Jun. 16, 1992
5090439 Atmospheric compensating automatic air release valve Feb. 25, 1992
4453560 Hydraulically balanced valve mechanism Jun. 12, 1984
4376446 Vent valve for fuel tanks and the like Mar. 15, 1983
4164955 Liquid level control valve Aug. 21, 1979
4014362 Simplified balance valve steam trap Mar. 29, 1977

  Recently Added Patents
Method and apparatus for internet on-line insurance policy service
Probiotic enriched and low organic acid food products
System and method for generating profile morphing using cephalometric tracing data
Keypoint descriptor generation by complex wavelet analysis
Methods and arrangements for realising betting with off-line terminal
Nanoparticles in a flash memory using chaperonin proteins
Electronic multiparty accounts receivable and accounts payable system
  Randomly Featured Patents
Soybean variety 90B11
Implantable medical device with electromechanical delay measurement for lead position and ventricular
Shoe upper with lacing
Heating system for potable water and relatively small areas
Automatic vertical glass cutting machine
Device and method for triggering an inductor
Gel-filled closure
Restraint chair apparatus
Computer-related method and system for controlling data visualization in external dimension(s)
Process to minimize turbine airfoil downstream shock induced flowfield disturbance