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
Cycloalkylamine substituted isoquinoline derivatives
Battery terminal with current sensor
Pet bed
Bull stationery tab
Intermediate film for laminated glasses, and laminated glass
PMI feedback with codebook interpolation
Multilevel directory assistance apparatus and method
  Randomly Featured Patents
Organic positive temperature coefficient thermistor
Apparatus and method for reading an identifying label on an information record
Golf ball having improved playability properties
Heat treatment apparatus
System, method and apparatus for connecting users in an online computer system based on their relationships within social networks
Method and apparatus for wireless testing of integrated circuits
Chemical admixtures for hydraulic cements
Ceramic articles and methods for preparing ceramic articles and for sintering
Elastic surface wave Hadamard transformer
Preparation of .alpha.,.beta.-unsaturated carboxylic acids and esters