Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Browse by Category: Main > Engineering
Class Information
Number: 137/406
Name: Fluid handling > Liquid level responsive or maintaining systems > By weight of accumulated fluid > In communicating measuring vessel
Description: Apparatus in which the weight or pressure head of the liquid is sensed in a vessel which is separate from the liquid accumulation but is in communication therewith.










Sub-classes under this class:

Class Number Class Name Patents
137/407 Top and bottom connections 2


Patents under this class:

Patent Number Title Of Patent Date Issued
6325094 Self-metering reservoir Dec. 4, 2001
6019114 Self-metering reservoir Feb. 1, 2000
5715856 Liquid flow control apparatus Feb. 10, 1998
5358003 Method and apparatus for maintaining level of water in above-ground swimming pools Oct. 25, 1994
5154205 Method and apparatus for maintaining level of water in above-ground swimming pools Oct. 13, 1992
4607658 Water level control device Aug. 26, 1986
4598733 Apparatus for detecting the volume of blood in a blood reservoir Jul. 8, 1986
4448210 Apparatus and method for controlling the level of a liquid in a tank May. 15, 1984
3938539 Apparatus for leading off air in connection with the measuring of the flow of a liquid Feb. 17, 1976











 
 
  Recently Added Patents
(4950
Near-field transducers for focusing light
Image reconstruction iterative method
Mass spectrometry device and method using ion-molecule reaction ionization
Correlating trace data streams
Camera body, and camera system
Contact lens material
  Randomly Featured Patents
Substrate strip for semiconductor packages
Compositions and method for the treatment of disease
Systems and methods for asynchronous re-modulation with adaptive I/Q adjustment
Relay station arrangement method and relay station arrangement device
Container
Single body and composite sliding members
Plasma addressed display device
Razor hanger
Print media heating techniques for a vacuum belt hard copy apparatus
Method and apparatus for reducing standby current in a dynamic random access memory during self refresh