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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7431121 | Drive section of a lift truck A drive section of an industrial truck has a vehicle frame (1), a drive unit (4) having a steerable drive wheel, and at least one pivoting roller (5, 6) located at a lateral offset in relation to the drive wheel (4d). The vehicle f... | 10/07/2008 |
| 7431110 | High-torque gear assembly for personal mobility apparatus A high-torque gear assembly for a personal mobility apparatus is disclosed generally comprising a shaft that drives a drive wheel of the personal mobility apparatus, a worm driven by a motor, and a worm wheel coupled to the shaft and driven by the worm, where both t... | 10/07/2008 |
| 7431109 | Power supply assembly for motorized vehicles A power supply assembly is provided for a vehicle, such as a Personalized Motorized Vehicle (PMV), including a detachable mounting assembly therefor which facilitates the ease of attachment of a Power Supply Unit (PSU) to a main structural frame of the vehicle, prov... | 10/07/2008 |
| 7426970 | Articulated wheel assemblies and vehicles therewith The disclosed articulated wheel assemblies and associated vehicles, for example wheelchairs, include articulated wheel assemblies with at least one offset connecting arm rotatably attached at one end to a payload platform, for example a seat, and attached at the oth... | 09/23/2008 |
| 7425007 | Wheelchair and operating means for use in such a wheelchair The invention relates to a wheelchair, including an assembly of a chair unit for a user and a support base supporting the chair unit, wherein the support base includes a number of carrying wheels for carrying the assembly, a drive element connected to the assembly f... | 09/16/2008 |
| 7422079 | Intelligent obstacle-overcoming vehicle The present invention is a vehicle which has seven degrees of freedom driven by servo motors with brakes so that obstacles of transportation are overcome for a disabled and the disabled can be lifted to a height as tall as a normal person. ... | 09/09/2008 |
| 7413038 | Anti-tip system for a power wheelchair An anti-tip system is provided for improving the stability of a powered vehicle, such as a powered wheelchair. The vehicle includes a drive-train assembly which is pivotally mounted to a main structural frame. A suspension system biases the drive-train assembly and ... | 08/19/2008 |
| 7401675 | Detachable vehicle body that is assembled and disassembled easily and rapidly A vehicle body includes a front frame, a rear frame, a control unit, a fixing screw, a battery, and a locking unit. Thus, the rear frame is combined with and detached from the front frame easily and rapidly, thereby facilitating a user assembling and disassembling t... | 07/22/2008 |
| 7398842 | Articulating quad-drive wheelchair A self-propelled wheelchair with independently driven wheels and dual support frames connected in an articulating relationship. A front frame supports a seat and a rearward extended pivot connector. A pair of front wheels and left and right front drive units are con... | 07/15/2008 |
| 7389835 | Active anti-tip system for power wheelchairs A linkage arrangement for an active anti-tip system is provided for improving the stability of a powered vehicle, such as a powered wheelchair. The vehicle includes a drive-train assembly which is pivotally mounted to a main structural frame. A suspension system bia... | 06/24/2008 |
| 7383904 | Auxiliary power unit starting apparatus for a wheelchair An auxiliary power unit starting apparatus for a wheelchair comprises a housing, a plurality of triggers fixed in a triggering disc which is installed on an inner surface of the housing, a plurality of return springs biased between the housing and the driving disc f... | 06/10/2008 |
| 7384046 | Powered wheeled vehicle capable of travelling on level ground, over uneven surfaces and on stairs Powered wheeled vehicle (1), capable of travelling both on level ground and over uneven surfaces, comprising at least one driving tread (BR11) as well as two pairs of front wheels (R61) and rear wheels (R21), of which at least one is a dr... | 06/10/2008 |
| 7380824 | Wheelchair suspension A side frame assembly for an electric wheelchair suspension includes a supporting frame unit with a rider-supporting frame, a front caster frame, an upper link having a front end connected pivotally to the front caster frame, and a lower link disposed under the uppe... | 06/03/2008 |
| 7374002 | Wheelchair suspension The present invention provides a suspension for a conveyance that is capable of traversing obstacles and rough terrain. The suspension includes a frame, a pivot arm, a front caster, a drive assembly and a rear caster. The pivot arm substantially remains in a first p... | 05/20/2008 |
| 7370713 | Personal mobility vehicles and methods A class of transportation vehicles for carrying an individual over ground having a surface that may be irregular. This embodiment has a motorized drive, mounted to the ground-contacting module that causes operation of the vehicle in an operating position that is uns... | 05/13/2008 |
| 7369943 | Powered mobility vehicle collision damage prevention device A collision damage prevention system is disclosed which may be installed on many standard powered mobility vehicles for handicapped persons. The system includes an array of one or more sensors placed around the periphery of the powered mobility vehicle, a switch for... | 05/06/2008 |
| 7360781 | Foldable wheelchair and axle plate therefor A foldable wheelchair comprises a substantially horizontally extending upper side frame member. An upper end of an axle plate is secured to the upper side frame member. An axle housing is secured to the axle plate. A cross brace is pivotally secured directly to the ... | 04/22/2008 |
| 7341123 | Running wheel arrangement for a wheelchair A running wheel arrangement for a wheelchair that can be driven by electric motor including a frame and wheels releasably connected. A driving motor being integrated in two wheels and the wheels are connected via a respective adapter arranged on the frame. The wheel... | 03/11/2008 |
| 7316282 | Anti-tip system for wheelchairs An anti-tip system is adapted for use in a powered wheelchair for purposes of curb-climbing and ride stability. The anti-tip system includes at least one anti-tip wheel, a suspension arm for mounting the anti-tip wheel and a pair of links coupling the suspension arm... | 01/08/2008 |
| 7314220 | Suspension system for a powered wheelchair A variable stiffness suspension system is provided for a wheelchair. The wheelchair has a frame and at least one wheel coupled to the frame for generally vertical movement relative to the frame. At least one sensor is provided for sensing an operating condition of t... | 01/01/2008 |
| 7311160 | Wheelchair with forced driven front caterpillar wheels The present invention relates to a wheelchair with forced driven front caterpillar wheels with a cable-hauling ratchet lever by which a user, by himself/herself, can pass over a road-block or drains on roads, lifts up the caterpillars from the ground for easy steeri... | 12/25/2007 |
| 7311329 | Anti-tip wheel for a wheelchair A wheelchair is provided with front anti-tip wheels adapted to assist the wheelchair in mounting an obstacle that the wheelchair approaches obliquely. The anti-tip wheels may function as casters, capable of rotating about a vertical axis, or may be fixed for rotatio... | 12/25/2007 |
| 7306247 | Suspension structure for an electric wheelchair A suspension structure for an electric wheelchair comprises a frame, two cantilevers, two drive wheels, two rollers, four wheel-mounting assemblies, two front wheel assemblies, two draglines and two rear wheel assemblies. When surmounting a barrier, the front wheel ... | 12/11/2007 |
| 7293620 | Front wheel stabilizing device for an electric motor-driven wheeled vehicle A front wheel stabilizing device includes a mount adapted to be secured to a main frame of an electric motor-driven wheeled vehicle, and an axle disposed between two side plates of the mount. A wheel mounting member has a tubular head which is rotatably sleeved on t... | 11/13/2007 |
| 7278653 | Wheelchair, particularly electric wheelchair Disclosed is a wheelchair, particularly an electric wheelchair, comprising a frame (20), at least one steerable wheel (3), two non-steerable wheels (5) which are connected to the frame (20) at a wheelbase (R), and a seat (10) that ... | 10/09/2007 |
| 7273116 | Dynamic balancing vehicle with a seat A device for transporting a human subject over a surface. The device is a dynamically balancing vehicle having a control loop for providing balance. The device includes a platform defining a fore-aft plane. The platform supports a payload including the human subject... | 09/25/2007 |
| 7273118 | Electric wheelchair frame An electric wheelchair frame includes a seat brace, a pair of connection rods, a pair of front suspension brackets, a pair of rear suspension brackets, and a pair of resilient members. A front section of either side of the seat brace is pivotally connected to the fr... | 09/25/2007 |
| 7270208 | Battery carrier sliding device of an electrical wheel chair The present invention provides a battery carrier sliding device for the electric wheelchair, wherein a battery box for the electric wheelchair can be disconnected or reconnected through a manual lockable unit. The present invention provides an improved design for a ... | 09/18/2007 |
| 7264272 | Bi-directional anti-tip system for powered wheelchairs A bi-directional anti-tip system for a wheelchair includes a pair of anti-tip system subassemblies actively lifting a leading anti-tip wheel when traveling in either forward or reverse directions. The anti-tip system subassemblies operate to couple a leading anti-ti... | 09/04/2007 |
| 7249777 | Camber tube level A level on a wheelchair allows the cambered rear wheels to be easily adjusted to eliminate toe-in/toe-out. The level comprises a ball encased in a curved track. The curve track is formed in a clear housing that mounts to the underside of a wheelchair camber tube or ... | 07/31/2007 |
| 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 |
| 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 |
| 7219755 | Obstacle traversing wheelchair The present invention provides a curb-climbing wheelchair having pivotal arm assemblies. The pivotal arm assemblies include at least one front caster and have the ability to rotate or pivot. The pivot arms rotate or pivot in response to moments generated by accelera... | 05/22/2007 |
| 7207403 | Transportable power wheelchair A transportable power wheelchair is provided which employs a variety of detachable modules to facilitate transportation and storage. The wheelchair may be readily disassembled/reassembled by a single individual without assistance and/or the need for special tools. T... | 04/24/2007 |
| 7204328 | Power apparatus for wheelchairs The disclosed invention used power-assist wheelchair hubs and an array of sensors to provide obstacle-avoidance features on a wheelchair. In a power-assisted manual wheelchair, the traditional rear wheels are replaced with motorized hubs that magnify the force appli... | 04/17/2007 |
| 7182166 | Footrest tuck mechanism A wheelchair with a footrest that tucks as a power base on which the wheelchair seat is mounted rotates about an axis parallel to a surface. The rotation of the power base raises the height of the seat above the surface. The footrest, which is coupled to the support... | 02/27/2007 |
| 7175193 | Wheel bracket mechanism for an electric wheelchair equipped with auxiliary wheels A wheel bracket mechanism for an electric wheelchair equipped with auxiliary wheels, which comprises a frame, a pair of drive wheel brackets, four pedestal assemblies, a pair of caster brackets, a pair of oscillating assembly and a pair of anti-tipping brackets. The... | 02/13/2007 |
| 7152882 | Mobile carriage The invention provides a mobile carriage which is adapted to shift the center of gravity efficiently by utilizing the weight of wheel rotating means, power source means and control means to thereby increase the weight of a weight portion and reduce the increase in t... | 12/26/2006 |
| 7150463 | Wheelchair capable of absorbing road shock A wheelchair includes a chair frame, two suspension arms, two clutches, two drive wheels, two shock absorbers, and two limiting units. The chair frame includes two lateral frame parts. Each of the suspension arms is connected pivotally to the chair frame adjacent to... | 12/19/2006 |
| 7144026 | Wheel chair having foldable back support A wheel chair includes a back support pivotally attached to a base frame and having a handle and a hand grip pivotally attached to the handle, a housing is secured to the base frame and includes a chamber to slidably receive a shank which has one end pivotally attac... | 12/05/2006 |
