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Class Information
Number: 4/508
Name: Baths, closets, sinks, and spittoons > Pool type > Construction details > Including water inlet or outlet means > And water level control
Description: Subject matter including means to keep the water at a certain height.










Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8689369 Pool skimmer with integral disinfectant dispenser Apr. 8, 2014
8640275 Cleaning systems and methods for cleaning containers having non-vertical sidewalls Feb. 4, 2014
8375479 Apparatus for recycling wasted heat using waste hot water Feb. 19, 2013
8266737 Swimming pool water leveler Sep. 18, 2012
8209794 Automatic pool level Jul. 3, 2012
8091581 Fluid level control toggle valve device and method Jan. 10, 2012
7992233 Hydraulic suction fuse Aug. 9, 2011
7934517 Water level control system May. 3, 2011
7854597 Pumping system with two way communication Dec. 21, 2010
7836526 Negative or vanishing edge for spas and/or hot tubs Nov. 23, 2010
7740032 System and method for automatically filling a liquid receptacle Jun. 22, 2010
7690054 Water level control for vanishing edge pool Apr. 6, 2010
7395559 Swimming pool water level controller Jul. 8, 2008
7213275 Float operated hydraulic suction fuse for swimming pools May. 8, 2007
7146658 Pool skimmer Dec. 12, 2006
7117905 System and method for automatically filling a liquid receptacle Oct. 10, 2006
7096898 System and method for automatically filling a liquid receptacle Aug. 29, 2006
7089607 Pool drain assembly with annular inlet Aug. 15, 2006
7076813 Pool skimmer Jul. 18, 2006
7003817 Tank with automatic fill and overfill drain Feb. 28, 2006
6966079 Pool skimmer Nov. 22, 2005
6910498 Liquid level controller Jun. 28, 2005
6895608 Hydraulic suction fuse for swimming pools May. 24, 2005
6826787 Controller Dec. 7, 2004
6779205 Vacuum surge suppressor for pool safety valve Aug. 24, 2004
6754915 Scupper with automatic shutoff valve Jun. 29, 2004
6747367 Controller system for pool and/or spa Jun. 8, 2004
6718567 Swimming pool water level controller Apr. 13, 2004
6701542 Floating weir skimmer for a flexible-walled above-ground pool Mar. 9, 2004
6611968 Water body (e.g., pool) water level replenishment system and method Sep. 2, 2003
6546944 Fluid siphon outlet sensor system Apr. 15, 2003
6276200 Liquid level controller Aug. 21, 2001
6263906 Overflow proof fluid level controller Jul. 24, 2001
6223359 Automatic water level system for swimming pools May. 1, 2001
6158064 Water level adjustment device Dec. 12, 2000
6128792 Retractable aerator Oct. 10, 2000
6080324 Swimming pool surge pit filter Jun. 27, 2000
6035879 Automatic fill valve assembly Mar. 14, 2000
6003164 Pool monitor and controller Dec. 21, 1999
5996138 System and method for contributing to the control of the total dissolved solid levels in a pool and for conserving water Dec. 7, 1999
5992447 Device for filling vinyl lined pools Nov. 30, 1999
5937453 Pool skimmer face plate and releasable cover Aug. 17, 1999
5878447 Automatic water regulator apparatus for filling a swimming pool or comparable body of water when the water level is low Mar. 9, 1999
5836022 Automatic liquid level control apparatus Nov. 17, 1998
5804080 Computer controlled method of operating a swimming pool filtration system Sep. 8, 1998
5790991 Apparatus for automatically regulating water level in a swimming pool Aug. 11, 1998
5730861 Swimming pool control system Mar. 24, 1998
5655232 Fluid level control device and method Aug. 12, 1997
5628896 Apparatus for operating a filter arrangement May. 13, 1997
5616239 Swimming pool control system having central processing unit and remote communication Apr. 1, 1997

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