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| Number | Title | Issue Date |
| 7363994 | Wheeled platforms A wheeled platform 100 is disclosed, which is characterized by high mobility and reliability, and which can be used in a wide range of applications including transport and robotic devices. The wheeled platform 100 has fore and aft body portions 130,... | 04/29/2008 |
| 7360792 | Power wheelchair A power wheelchair is capable of operating in either a two-wheel or a four-wheel drive configuration. The wheelchair includes first and second forward drive wheels in contact a supporting surface. First and second wheel support assemblies each include a support memb... | 04/22/2008 |
| 7232008 | Active anti-tip wheels for power wheelchair An anti-tip system is provided for stabilizing a vehicle, such as a power wheelchair, about a pitch axis and relative to a ground plane. The anti-tip system includes at least one anti-tip wheel. The mounting assembly for the anti-tip wheel is configured such that it... | 06/19/2007 |
| 7229092 | Walking aid A strong, light weight walking aid with optional seat that can be used to assist a person in walking and resting on the walking aid. The walking aid collapses so that it can be stored in a small space and the handle can be removed and reattached to make it even smal... | 06/12/2007 |
| 7219924 | Rear wheel drive power wheelchair with ground-contacting anti-tip wheels A curb-climbing rear wheel drive power wheelchair is disclosed having a pair of drive wheels, at least one ground-engaging idler wheel connected to the frame forward of the drive wheels and at least one ground-contacting anti-tip caster wheel mounted to the wheelcha... | 05/22/2007 |
| 7168712 | Multi function hand truck A multi-function hand truck is convertible to allow lifting of a load at a spaced distance from the truck and/or is convertible for use as a wheelbarrow. A pair of lifting arms co-operate with the frame of the hand truck to extend outwardly therefrom and allow the f... | 01/30/2007 |
| 7040429 | Wheelchair suspension A wheelchair suspension having plurality of pivoting linkages to lift and retract a front castor assembly to facilitate traversing an obstacle or rough terrain. In this regard, a wheelchair suspension having a frame member and at least one a pivoting assembly is pro... | 05/09/2006 |
| 7021641 | Suspension structure for wheelchair A suspension structure for a wheelchair generally includes movable arm that serve to connect driving wheels with frame of a wheelchair, sliding unit is further provided for enabling the movable arm to movably connect with a front cantilever of the wheelchair. By suc... | 04/04/2006 |
| 7011171 | Rugged terrain robot A rugged terrain robot (RTR) apparatus can function as a reconnaissance robot to optimize safety of search or rescue personnel. Remote control places the RTR in either a rolling mode or in a stair-climbing mode. Remote feedback is provided by an on-board RTR camera ... | 03/14/2006 |
| 6938923 | Power wheelchair A curb-climbing rear wheel drive power wheelchair is disclosed having a pair of drive wheels, at least one ground-engaging idler wheel connected to the frame forward of the drive wheels and at least one anti-tip wheel mounted above ground aft of the drive wheels. Th... | 09/06/2005 |
| 6923278 | Adjustable anti-tip wheels for power wheelchair A power wheelchair with front anti-tip wheels for substantially eliminating partial tips of the wheelchair is described. The anti-tip wheels are attached to the end of an extension arm which is attached to the frame of the wheelchair. A spring connects the anti-tip ... | 08/02/2005 |
| 6662889 | Wheeled platforms A wheeled platform 100 is disclosed, which is characterized by high mobility and reliability, and which can be used in a wide range of applications including transport and robotic devices. The wheeled platform 100 has fore and aft body portions 130, 132, ... | 12/16/2003 |
| 6467788 | Tilt-in-place wheelchair having adjustable wheelbase width A tilt-in-place wheelchair having adjustable wheelbase includes front and rear side frames, hinged cross members supported on the frames, an adjustment rail supported on the frames for rotation relative to the frames, a block slideably supported on the ra... | 10/22/2002 |
| 6341784 | Motor-driven stair climbing device A motor-driven stair climbing device (10) to carry equipment and goods, more particularly wheel chairs (9) with disabled persons. The wheel chair (9) can be detachably fixed to the stair climber (10) and essentially comprises a stable frame (101) with an ... | 01/29/2002 |
| 5996767 | Wheelchair transporter for use on an escalator and an escalator control system for transporting the wheelchair transporter on the escalator A transporter main body has a pair of front wheels and a pair of rear wheels, each of which is adapted to contact with a step of an escalator, a resilient member connected to the bottom of the transporter main body, a mounting structure for mounting a whe... | 12/07/1999 |
| 5464234 | Rearward approach curb jumper for a hand truck A fulcrum and method of use for passage of a hand truck rearward, handles first, over a curb and onto an adjacent raised surface such as a sidewalk. A short pivotable arm attached to rails of the truck is the fulcrum, and is positioned low on the rearward... | 11/07/1995 |
| 5390389 | Wheeled load carrier A wheeled load carrier is disclosed in conjunction with a portable, drum-type motor driven drain cleaning machine, and the carrier comprises a wheeled frame structure on which the drum and drive motor are mounted and which is provided with wheels for tran... | 02/21/1995 |
| 5328182 | Trolley climbable on staircase A trolley includes a basket having a rear portion of the basket secured to a rear frame having a pair of rear wheels rotatably mounted on a lower portion of the rear frame, and a handle pivotally secured to the rear frame having a pair of front wheels rot... | 07/12/1994 |
| 4811966 | Kerb climbing device A kerb climbing device for a wheelchair having a pair of wheels of relatively small diameter comprises a guide arm and a lifting arm mounted centrally between the wheels for pivotal movement about a horizontal axis extending between opposed sides of the w... | 03/14/1989 |
| 4809996 | Shopping cart capable of climbing stairs An improved collapsable shopping cart capable of climbing stairs that employs a direct pivotal connection between two tubular frames, each frame having two spaced apart legs carrying wheels. The novel construction includes a bracket supporting the basket ... | 03/07/1989 |
| 4733877 | Cart apparatus with improved handle A multi-purpose luggage cart (10) is disclosed. The cart includes first and second primary support wheels (24a) and (24b) coaxially mounted to a lower frame (11) adjacent the trailing end (11a) and at oppositely disposed sides. A caster (25) is rotatable ... | 03/29/1988 |
| 4722538 | Shopping cart capable of climbing stairs A shopping cart that utilizes two pivotably connected tubular frames, each frame having two spaced apart legs with an axle carrying wheels extended between them. These frames are pivotably connected in a way which permits the movable frame to be tilted ba... | 02/02/1988 |
| 4639004 | Hand cart with fulcrum lever and vertically adjustable auxiliary wheels A hand-propelled cart has a pair of main wheels rotatably mounted on a lower end portion of a body and a handle mounted on an upper end portion of the body. A control lever is pivotably mounted on the body above of the main wheels, and has contact means d... | 01/27/1987 |
| 4249612 | Rotary tiller and attachment therefor A travel attachment for rotary tillers is disclosed. The travel attachment comprises a fulcrum attached to a frame of the tiller, and a control bar longitudinally movable along the fulcrum including a lower end engagable with the ground. The upper end of ... | 02/10/1981 |
