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
Rain barrel
Upstream channel bonding in a cable communications system
Frothable aqueous composition for use in a carpet backing composition
Smooth silicon-containing films
Motor with power-generation coil module
Serial transmission system including transmitter apparatus and receiver apparatus, for use in transmission of AV data
Graphical user interfaces and occlusion prevention for fisheye lenses with line segment foci
  Randomly Featured Patents
Armor plate having triangular holes
Pattern cutting cabinet
Method for operating a navigation system for motor vehicles
CDR lock detector with hysteresis
Electronic moisture meter
Embolic coil deployment system with retaining jaws
Sintered sol gel alumina abrasive filaments
Process for the manufacture of a mineral wool plant growth substrate
Method and apparatus of physical resource allocation, method of data receiving, and receiving end
Tertiary alkyl ester preparation using large-pore zeolite catalysts