Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/270.5
Name: Fluid handling > Convertible > Unit orientable in a single location between plural positions > Reversible stop and vent or waste
Description: Devices comprising stop and vent or waste valve units having means to associate the waste port with either principal port.

Patents under this class:

Patent Number Title Of Patent Date Issued
5775199 Rotary valve and directional valve combination Jul. 7, 1998
4974625 Four mode pneumatic relay Dec. 4, 1990
4848392 Solenoid on-off valve Jul. 18, 1989

  Recently Added Patents
Method and structure for image local contrast enhancement
Interferer region identification using image processing
Fuel cell and a method of manufacturing a fuel cell
Display device and method of repairing display device
Pyridazine compounds for controlling invertebrate pests
Diazeniumdiolated phosphorylcholine polymers for nitric oxide release
Electronic hand-held device
  Randomly Featured Patents
Polychromophoric ultraviolet stabilizers and their use in organic compositions
Clutch device
Composite materials
Apparatus for the supply of bags
Information processing apparatus, information processing method, and program
Antibotulinal agents for high moisture process cheese products
Light-activated semiconductor-controlled rectifier
Surfactant composition
Scrubbing means