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Class Information
Number: 4/500
Name: Baths, closets, sinks, and spittoons > Pool type > Accessory > Covering > Including storage area
Description: Subject matter having a place where the cover is kept when not in use.










Sub-classes under this class:

Class Number Class Name Patents
4/502 On a roll 113
4/501 On pool bottom 20


Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8661575 Swimming pool cover and associated opening and closing mechanism Mar. 4, 2014
8578524 Cover lifter Nov. 12, 2013
8516625 Spa cover Aug. 27, 2013
8516626 Spa cover lifter system Aug. 27, 2013
8479325 Spa tub cover and lifter system Jul. 9, 2013
8468617 Spa tub cover system Jun. 25, 2013
8448268 Pool cover hanging assembly May. 28, 2013
8438671 Automated pool-deck lid lift system for below deck pool cover housing troughs May. 14, 2013
8261378 Covered pool Sep. 11, 2012
8253609 Transform-based coding/decoding, with adaptive windows Aug. 28, 2012
7461415 Method and apparatus for automatically lifting a cover Dec. 9, 2008
7412733 Retractable cover arrangement for hot tubs and the like Aug. 19, 2008
7073213 Upright hinge for spa cover Jul. 11, 2006
6910233 Elongated roller shutter profile made of plastic or metal for swimming pool covers Jun. 28, 2005
6862756 Walk-on tray for concealing a pool cover operation system Mar. 8, 2005
6795984 Spa cover lifting device Sep. 28, 2004
6665890 Spa cover lifter Dec. 23, 2003
6606752 Coverable above-ground pool Aug. 19, 2003
6550077 Spa cover lifter Apr. 22, 2003
6446276 Walk-on tray for concealing a pool cover operation system Sep. 10, 2002
6430879 Collapsible housing Aug. 13, 2002
6421962 Swimming pool assembly Jul. 23, 2002
6374433 Moveable hot tub cover structure Apr. 23, 2002
6241207 Pool cover storage device Jun. 5, 2001
6158063 Spa cover lifting device Dec. 12, 2000
6014778 Pool cover system Jan. 18, 2000
5974599 Spa cover lifting device Nov. 2, 1999
5956783 Swimming pool cover storage apparatus Sep. 28, 1999
5927042 Composite beam enclosure structure Jul. 27, 1999
5920922 Cover system with edge stops Jul. 13, 1999
5913613 Cover operation system Jun. 22, 1999
5761750 Hot tub with covering apparatus Jun. 9, 1998
5673442 Cover for swimming pools Oct. 7, 1997
5644803 Spa cover support assembly Jul. 8, 1997
5593122 Hanger/hook accessory Jan. 14, 1997
5471685 Supports for hot tub spa covers Dec. 5, 1995
5068928 Pool cover storage apparatus Dec. 3, 1991
4972529 Protective blanket for a solar pool cover Nov. 27, 1990
4851275 Covering used to protect water conditions of nursery pool from damage by acid rain and extraordinary temperatures Jul. 25, 1989
4765005 Support device Aug. 23, 1988
4764998 Retractable cover Aug. 23, 1988
4471500 Self-rolling swimming pool cover Sep. 18, 1984
4426744 Combination of an outdoor swimming pool and adjustable roof structure Jan. 24, 1984
4411031 Buoyant swimming pool cover Oct. 25, 1983
4378608 Apparatus for covering a liquid basin, and roller-blind type cover for use therein Apr. 5, 1983
4246663 Hot tub cover Jan. 27, 1981
4234973 Tub cover Nov. 25, 1980
4165543 Suspended motor lifted swimming pool cover Aug. 28, 1979
4164047 Multipurpose gymnasium Aug. 14, 1979
4163295 Pool cover Aug. 7, 1979

1 2










 
 
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