Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/207.5
Name: Fluid handling > Diverse fluid containing pressure systems > Gas pressure storage over or displacement of liquid > With return of liquid to supply
Description: Apparatus in which the liquid in one part of the system is allowed to flow back, is forced back, or is by-passed back to the source of supply, in order to empty the system for cleaning, storage, etc.

Patents under this class:

Patent Number Title Of Patent Date Issued
8230613 Clothes treating apparatus Jul. 31, 2012
5803111 Device for purging water supply line Sep. 8, 1998
5660530 Pump system for biasing seals of a centrifugal pump Aug. 26, 1997
5257608 Device in a fuel system for an internal combustion engine Nov. 2, 1993
4799864 Hydro-pneumatic pumpsets Jan. 24, 1989
4475876 Oil purge system for cold weather shutdown of oil flooded screw compressor Oct. 9, 1984
4274405 Method for varying the ambient pressure in a vessel Jun. 23, 1981
4072168 Dual standpipe arrangement supplementing a water supply system Feb. 7, 1978

  Recently Added Patents
Nanoparticles in a flash memory using chaperonin proteins
Transmitting a synchronizing signal in a packet network
Device for increasing chip testing efficiency and method thereof
Device for maneuvering a vehicle using maneuvering moves using at least one trajectory
Method of making a CIG target by cold spraying
Techniques for data assignment from an external distributed file system to a database management system
Adaptive contact window wherein the probability that an answering user/expert will respond to a question corresponds to the answering users having response rates that are based on the time of
  Randomly Featured Patents
Safety reflector for vehicles
Room temperature curable polyoganosiloxane composition
Recovery of phenol ligands during the production of isopulegol
Method of manufacturing a capacitive acceleration sensor, and a capacitive acceleration sensor
Emergency detection and notification system
Polyoxyalkylene/unsaturated diester reaction product for cellular foam stabilization
Serial printer
Game for suggesting personality traits using colorized cards
System and method for activating and deactivating a remotely controlled vehicle starter
Postage meter having means transferring data from a working memory to a non-volatile memory under low power conditions