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Class Information
Number: 4/246.2
Name: Baths, closets, sinks, and spittoons > Opener or closer for a closet seat or lid > Fluid mechanism
Description: Subject matter wherein the means uses fluid as a source of power or to transmit force to assist the user in moving the seat or lid from one position to another.










Patents under this class:
1 2

Patent Number Title Of Patent Date Issued
8566970 Hydraulic atuator device for raising and lowering a seat and lid Oct. 29, 2013
8402571 Toilet seat handle Mar. 26, 2013
8286273 Toilet foot flushing apparatus Oct. 16, 2012
8266730 Hands-free toilet attachment Sep. 18, 2012
8096393 Breakdown preventive device of rotary damper Jan. 17, 2012
8082604 Toilet seat lifter and dropper Dec. 27, 2011
8020221 Hands-free toilet seat lifting device Sep. 20, 2011
7003815 Foot operated flushing apparatus and method Feb. 28, 2006
6978489 Toilet seat Dec. 27, 2005
6907621 Toilet seat lifter with flusher Jun. 21, 2005
6883186 In-tank lid position control Apr. 26, 2005
6775855 Self-closing toilet lid Aug. 17, 2004
6772452 Laminar flow attachment for controlling toilet bowl splashing Aug. 10, 2004
6725984 Rotary damper Apr. 27, 2004
6684416 Structure of a self-lifting toilet seat Feb. 3, 2004
6523185 Self-lowering toilet seat Feb. 25, 2003
6470502 Automatically raised toilet seat apparatus Oct. 29, 2002
6434759 Automatically operable lid for a vacuum waste receptacle Aug. 20, 2002
6363543 Foot actuated toilet seat lifting, and reseating device Apr. 2, 2002
6351856 Toilet seat lifting assembly Mar. 5, 2002
6321394 Toilet seat closing system Nov. 27, 2001
6230336 Automated toilet seat and seat cover lifting and lowering system May. 15, 2001
6185754 Automatic toilet seat Feb. 13, 2001
6158059 Foot actuated toilet seat lift Dec. 12, 2000
6138289 Automatic toilet seat lowering device Oct. 31, 2000
6081936 Method and arrangement for automatically raising and lowering a toilet seat Jul. 4, 2000
6067667 Semi-automatic closing device for seat lid of toilet bowl May. 30, 2000
6035454 Toilet seat and lid closing assembly Mar. 14, 2000
5996132 Compound torque hinge Dec. 7, 1999
5974595 Toilet Nov. 2, 1999
5867843 Automatic toilet seat lowering apparatus Feb. 9, 1999
5781938 Toilet seat lowering device Jul. 21, 1998
5774904 Automatic toilet seat cover closing device Jul. 7, 1998
5768718 Control device for controlling the seat or the seat lid of a toilet bowl Jun. 23, 1998
5742949 Toilet seat lowering apparatus Apr. 28, 1998
5664286 Hinge mechanism for supporting the seat or the seat lid of a toilet bowl Sep. 9, 1997
5640928 Pet commode assembly having adjustable central aperture Jun. 24, 1997
5622139 Adjustable commode assembly having retractable aperture reducing shelves Apr. 22, 1997
5604936 Self-lowering toilet seat Feb. 25, 1997
5603127 Auto flush for tank toilet Feb. 18, 1997
5488744 Automatic toilet seat actuator Feb. 6, 1996
5461734 Automatic toilet seat lowering Oct. 31, 1995
5458089 Pet commode assembly having retractable shelves responsive to weight of human on toilet seat Oct. 17, 1995
5435017 Apparatus for automatically but delayedly lifting a toilet seat Jul. 25, 1995
5414876 Toilet assembly having a hydraulically rising seat May. 16, 1995
5400442 Automatic toilet seat and lid lowering device Mar. 28, 1995
5388281 Automatic closure mechanism for a toilet seat Feb. 14, 1995
5369814 Automatic commode seat closing system Dec. 6, 1994
5343571 Automatic toilet seat lowering apparatus Sep. 6, 1994
5327589 Toilet seat raising mechanism Jul. 12, 1994

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