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
Single-stage PFC converter with constant voltage and constant current
System and method for the heterologous expression of polyketide synthase gene clusters
All-in-one information handling system
Controlling ring-back tone output prior to a communication connection in mobile terminal
Debugging using code analysis
Communication device and method for detecting a radio signal
Performance metrics processing for anticipating unavailability
  Randomly Featured Patents
Optical device for mixing and redirecting light
Automatic solid phase extraction device with interchangeable nozzle holder head
Ceramic package type semiconductor device and method of assembling the same
Absorption-type refrigerator
Volatile copper(II) complexes and reducing agents for deposition of copper films by atomic layer deposition
Coaxial cable having easily attached coupler
Rotary powder compression molding machine
Dispersible organoclay for unsaturated polyester resins
Time-multiplexed speculative multi-threading to support single-threaded applications