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 Isolation, identification and characterization of strains with probiotic activity, from faeces of infants fed exclusively with breast milk Spacer isolation in deep trench Receiver-in-canal hearing device cable connections Efficient banded hybrid rendering Method and apparatus for using cache memory in a system that supports a low power state Blends of acrylic latices and polyurethane dispersions for coatings Flexible nozzle   Randomly Featured Patents Integrated circuit including interrupt controller with shared preamble execution and global-disable control bit Acoustic sensor array for non-invasive detection of coronary artery disease Networked digital security system and methods Pyrazole derivatives P-38 MAP kinase inhibitors Therapeutic support wrap for hot or cold therapy Water ease Conversion of methane Wear-resistant sprue bushing Vehicle light fixture Magnetic recording medium comprising a ferromagnetic metal film and two carbon protective layers © 2006-2008 PatentGenius. All Rights Reserved.