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
Managing distributed applications using structural diagrams
Closed cell culture system
Control of protein activity using a conducting polymer
Heat retaining device
Termite tubing preventative for non-wood materials
Polymer composites having highly dispersed carbon nanotubes
Methods and apparatus for ultrasonic cleaning
  Randomly Featured Patents
Inflatable disposable covered pillow
Coil bobbin for superconducting magnetic energy storage
Multifunctional back-flowing strong-suction blower
Optical type encoder for position detection
Method and apparatus for predicting process characteristics of polyurethane pads
Adsorber station and the use thereof
Epoxy resin composition and process for production
Attachments for power turns
Checkerboard buffer using more than two memory devices
Pneumatic tensioning and cutoff tool