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Class Information
Number: 280/DIG.10
Name: Land vehicles > Stair climbing chairs
Description:










Patents under this class:
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Patent Number Title Of Patent Date Issued
8167317 Wheelchair attachments May. 1, 2012
7766342 Wheelchair attachments Aug. 3, 2010
7150463 Wheelchair capable of absorbing road shock Dec. 19, 2006
7080842 Device for climbing stairs for a wheelchair Jul. 25, 2006
7021641 Suspension structure for wheelchair Apr. 4, 2006
6907945 Wheel chair Jun. 21, 2005
6845830 Method of climbing up/down a step, bogie and wheelchair Jan. 25, 2005
6752400 Moving unit Jun. 22, 2004
6644426 Mobility device Nov. 11, 2003
6644675 Stair chair Nov. 11, 2003
6619414 Personal mobility vehicle Sep. 16, 2003
6550787 Conveying apparatus for ascending or descending stairways Apr. 22, 2003
6422576 Transport mechanism Jul. 23, 2002
6357774 Conversion kit for creating an obstacle-mounting wheelchair Mar. 19, 2002
6328120 Stair climbing vehicle Dec. 11, 2001
6325167 Structure of an electrical wheelchair Dec. 4, 2001
6234504 Level propelled wheelchair May. 22, 2001
6158536 Stair-climbing vehicle for wheelchair Dec. 12, 2000
6029982 Wheeled vehicle for movement on escalators Feb. 29, 2000
5996767 Wheelchair transporter for use on an escalator and an escalator control system for transporting the wheelchair transporter on the escalator Dec. 7, 1999
5868403 Medical transport device Feb. 9, 1999
5868402 Motorized cart Feb. 9, 1999
5797606 Transporter for patient's emergency escape Aug. 25, 1998
5653301 Wheel-supported apparatus for climbing and descending stairs Aug. 5, 1997
5641030 Powered tracked vehicle suitable for carriages for the disabled Jun. 24, 1997
5624128 Transport system for disabled people Apr. 29, 1997
5579857 Stair climbing vehicle Dec. 3, 1996
5577567 Stair climbing wheelchair Nov. 26, 1996
5423563 Wheelchair having apparatus for climbing stairs Jun. 13, 1995
5413367 Movable chair May. 9, 1995
5395129 Wheel chair Mar. 7, 1995
5338048 Collapsible wheelchair Aug. 16, 1994
5263547 Stair climbing device Nov. 23, 1993
5248007 Electronic control system for stair climbing vehicle Sep. 28, 1993
5158309 Stair climbing apparatus for collapsible wheelchair Oct. 27, 1992
5123495 Wheelchair stair climbing control system Jun. 23, 1992
5052237 Transmission device Oct. 1, 1991
5020818 All-terrain wheelchair Jun. 4, 1991
4962941 Wheelchair apparatus Oct. 16, 1990
4898256 Stair-climbing wheelchair carrier with crawlers Feb. 6, 1990
4811966 Kerb climbing device Mar. 14, 1989
4794999 Wheelchair and method of operating same Jan. 3, 1989
4790548 Climbing and descending vehicle Dec. 13, 1988
4771839 Stair-climbing wheelchair carrier Sep. 20, 1988
4747611 Curb ascending and descending wheelchair May. 31, 1988
4730684 Vehicle Mar. 15, 1988
4688813 Carrier for rescuing patients Aug. 25, 1987
4687068 Invalid's wheelchair and like conveyances Aug. 18, 1987
4674584 Stair-climbing wheelchair with stair step sensing means Jun. 23, 1987
4618155 Stair-climbing wheelchair Oct. 21, 1986

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