Resources Contact Us Home
Browse by Category: Main > Engineering
Class Information
Number: 137/213
Name: Fluid handling > Diverse fluid containing pressure systems > Gas pressure storage over or displacement of liquid > With liquid level responsive gas vent or whistle
Description: Apparatus wherein a gas vent or whistle is opened in response to a predetermined liquid level.

Sub-classes under this class:

Class Number Class Name Patents
137/214 Combined high and low level responsive 4

Patents under this class:

Patent Number Title Of Patent Date Issued
8365758 Beverage barrel bladder system and apparatus Feb. 5, 2013
8104500 Acoustic liquid level detection Jan. 31, 2012
6125882 Fluid transfer system Oct. 3, 2000
5570714 Explosion-retardant containment vessel for storage of flammable liquids Nov. 5, 1996

  Recently Added Patents
Azole derivatives, methods for producing the same, intermediate thereof, agro-horticultural agents
Methods of establishing virtual circuits and of providing a virtual private network service through a shared network, and provider edge device for such network
Handheld electronic device with text disambiguation employing advanced editing feature
Methods and apparatus for dynamic identification (ID) assignment in wireless networks
Method and device for managing subscriber connection
Redundant parallel operation of motor vehicle electrical system generators
  Randomly Featured Patents
Transmission chain structure
Television receiver for receiving two different broadcast forms
Halogen containing fire retardant and fire retarded resin compositions containing said fire retardant
Fiber cement board with modified fiber
Controlled delivery system of antifungal and keratolytic agents for local treatment of fungal infections of the nail and surrounding tissues
Method and system for designing an electronic circuit
Recombinant production of novel polyketides
Bulk handling device operating coupling
Configuration system and method
Method for determining the fill time of a transmission clutch