Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Automatic water level monitoring system










Image Number 4 for United States Patent #4621657.

A system for maintaining a preselected water level in e.g. a swimming pool comprises a chamber (6) in communication with the pool such that the water level in the chamber corresponds to that of the pool. The chamber contains an adjustable over flow tube (15) and a vertically oriented water supply line (19) having a diaphragm valve (20) and surrounded by an annular float (29), the valve being actuated by a height adjustable overhead actuator bar (23).








 
 
  Recently Added Patents
Image-processing method and program, and image-processing apparatus
Dispensing of restricted goods
Power conversion device and method for controlling thereof
Rotation angle detecting device
Secure device sharing
Monitoring and correcting upstream packet loss
Multi-carrier operation for wireless systems
  Randomly Featured Patents
Fabrication of dielectrically isolated microelectronic semiconductor circuits utilizing selective growth by low pressure vapor deposition
Disposable contra-angle
Energy absorbing bumper
Detection of malicious URLs in a web page
Supported nanoparticle catalyst
Method for producing of phthalocyanine compound
Vehicle suspension control with relative suspension position sensor and differentiator
Modular display with irrigation feature
Substrate for liquid crystal display panel
Self-piercing rivet setting die and apparatus