IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0674845
(2008-03-20)
|
등록번호 |
US-8118321
(2012-02-21)
|
우선권정보 |
CH-1327/07 (2007-08-24) |
국제출원번호 |
PCT/CH2008/000126
(2008-03-20)
|
§371/§102 date |
20100223
(20100223)
|
국제공개번호 |
WO2009/026731
(2009-03-05)
|
발명자
/ 주소 |
- Hunziker, Kurt
- Raber, Thomas
|
출원인 / 주소 |
|
대리인 / 주소 |
Morris O'Bryant Compagni, P.C.
|
인용정보 |
피인용 횟수 :
17 인용 특허 :
12 |
초록
▼
The vehicle, for example a stand-up wheelchair, comprises a frame (11) and, arranged on the latter, a seat device (19). On each side of the frame (11), the central wheel (13), which can be driven by a motor (27), and the front wheel (15) are operatively connected to each other by an endless chain (4
The vehicle, for example a stand-up wheelchair, comprises a frame (11) and, arranged on the latter, a seat device (19). On each side of the frame (11), the central wheel (13), which can be driven by a motor (27), and the front wheel (15) are operatively connected to each other by an endless chain (45). The frame (11) has a front part (21) and a rear part (23), which are connected to each other in an articulated manner by way of a joint (25). In the sitting position, the front wheels (15) are not in contact with the ground, which means that they do not obstruct the manoeuvring of the vehicle in a confined space. In the standing position, the front wheels (15) are in contact with the ground, but the central wheels (13) are not. The user, in the standing position, is thus able to turn about the axis of the vehicle, without the central wheels (13) having a blocking action.
대표청구항
▼
1. A wheelchair with central wheel drive, comprising: a chassis and a seat device arranged on the chassis, the chassis having a front part and a rear part which are connected to each other in an articulated manner by a joint, andtwo central wheels which can be motor-driven separately from each other
1. A wheelchair with central wheel drive, comprising: a chassis and a seat device arranged on the chassis, the chassis having a front part and a rear part which are connected to each other in an articulated manner by a joint, andtwo central wheels which can be motor-driven separately from each other, two front wheels and at least one rear wheel, the front wheels capable of being motor-driven separately from each other and at least one drive allowing the front part of the chassis to be adjusted in relation to the rear part in order to bring the two central wheels out of contact with the ground and the front wheels into contact with the ground. 2. The wheelchair according to claim 1, wherein the front part forms a two-armed lever, the central wheels being arranged on one arm and the front wheels being arranged on the other arm. 3. The wheelchair according to claim 2, further comprising a spring means for biasing the front part against a stop on the rear part in order to hold the front wheels normally out of contact with the ground. 4. The wheelchair according to one of claim 1, further comprising an auxiliary wheel after the central wheel. 5. The wheelchair according to one of claim 1, further comprising a common motor drive for the central wheel, the front wheel and an auxiliary wheel of each side of a wheelchair. 6. The wheelchair according to claim 5, wherein the central wheel, the front wheel and the auxiliary wheel are operatively connected via at least one of an endless chain, an endless toothed belt, a toothed gearing, or a cardan shaft. 7. The wheelchair according to claim 1, wherein the rear wheel is spring-mounted. 8. The wheelchair according to claim 1, wherein two rear wheels are provided and in that the two rear wheels are arranged on a rocker which is pivotable about a central pivot axis. 9. The wheelchair according to claim 8, wherein a spring joint element serves as the pivot axis. 10. The wheelchair according to claim 1, further comprising a motor that can be actuated by the user and that serves as the drive for adjusting the front part. 11. The wheelchair according to claim 1, further comprising a stand-up mechanism for the seat device and means for moving the stand-up mechanism from the sitting position to the standing position and from the standing position to the sitting position and wherein the seat device is coupled to the front part of the chassis by a connecting means for bringing the front wheels into contact with the ground during the transition from the sitting position to the standing position. 12. The wheelchair according to claim 11, wherein the connecting means further comprises at least one of a pull rod or a cable pull, which connects the seat to the arm of the two-armed lever.
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