Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/516
Name: Fluid handling > Line condition change responsive valves > Direct response valves (i.e., check valve type) > With means for selecting area of valve or seat
Description: Valves provided with means for selecting one of a plurality of diverse effective areas for the valve by selecting from a plurality of preselected valve elements, i.e., from a plurality of valves or from a plurality of valve seats to vary the responsiveness of the valve.










Patents under this class:

Patent Number Title Of Patent Date Issued
5620026 Fluid controller and improved backflow prevention therefor Apr. 15, 1997
5152140 Pressure compensating valve spool positioned by difference in pressure receiving areas for load and inlet pressures Oct. 6, 1992
4597411 Restriction valve device for hydraulic pressure fluids in vehicle shock absorbing mechanisms Jul. 1, 1986
4370999 Pressure limiting device with two pressure levels for a pressure cooker Feb. 1, 1983











 
 
  Recently Added Patents
High-density fiber optic modules and module housings and related equipment
Field device for determining or monitoring a physical or chemical process variable
Electronic system auto-mute control circuit and control method thereof
Systems and methods for identifying similar documents
Decoding and presentation time stamps for MPEG-4 advanced video coding
Semiconductor device
Test method for inspection device, particularly for label seating inspection device
  Randomly Featured Patents
Methods for preparation and use of 1.alpha., 24(S) -dihydroxy vitamin D2
Silica stabilization and reinjection for geothermal method and apparatus
Nuclear reactor and production systems with flux-optical digitizer
Supporting structure of fixed contact terminals
Method and apparatus for multiplexing plural ion beams to a mass spectrometer
Method of winding a coil on a chuck having guide pins
Low pressure refrigerant contaminant tester
Double omni-directional antenna
Convertible bedding assembly and mattress
Synthesis of isoprenoid 1,5-dienes