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
Semiconductor device and method of manufacturing the same
Stable light source device
Output queued switch with a parallel shared memory, and method of operating same
Reference circuit with curvature correction using additional complementary to temperature component
System and method for a TCP mapper
Gearbox housing
Bull stationery tab
  Randomly Featured Patents
Home plate key chain
IC chip mounting method
Horizontally extending attachable headwear shield
Continuous duty chemically sanitizing batch rinse system
Light-emitting device having improved light output
System for waste paper conditioning
Low noise automatic camera advance mechanism
Pocket electric eraser
Plural input television receiver having peaking circuit and chrominance band reject filter in a video signal channel
Centrifugal water pump