Powered wheelchair configurations and related methods of use
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B60K-001/00
출원번호
US-0822464
(2010-06-24)
등록번호
US-8292010
(2012-10-23)
발명자
/ 주소
Puskar-Pasewicz, John
Alder, Kip D.
출원인 / 주소
Pride Mobility Products Corporation
대리인 / 주소
Woodcock Washburn LLP
인용정보
피인용 횟수 :
11인용 특허 :
56
초록▼
A wheelchair includes a frame, a chair, a pair of drive wheels, a pair of rear wheels, and a pair of front wheels. Each front wheel is part of a front arm assembly that is rigidly coupled to a drive via a mounting plate. The mounting plate is connected to the wheelchair frame by a pivot. The drives
A wheelchair includes a frame, a chair, a pair of drive wheels, a pair of rear wheels, and a pair of front wheels. Each front wheel is part of a front arm assembly that is rigidly coupled to a drive via a mounting plate. The mounting plate is connected to the wheelchair frame by a pivot. The drives are transversely mounted. The batteries are disposed rearward of the drives. The wheelchair seat can be moved forward to provide access to the batteries without fully removing the wheelchair from the frame.
대표청구항▼
1. A wheelchair comprising: a frame;a pair of drive wheels;a drive operatively coupled to each drive wheel, each one of the drives including a motor and a gearbox;a forward-extending front arm coupled to each drive such that each one of the drive and front arm structures is pivotally coupled to the
1. A wheelchair comprising: a frame;a pair of drive wheels;a drive operatively coupled to each drive wheel, each one of the drives including a motor and a gearbox;a forward-extending front arm coupled to each drive such that each one of the drive and front arm structures is pivotally coupled to the frame; anda front wheel rotatably coupled to the front arm, a centerline of the pivot axis having a vertical height that is approximately less than the vertical height of an axis of rotation of the front wheel when the drive wheels and front wheels are on level ground,whereby motor torque biases the front wheels when encountering an obstacle. 2. The wheelchair of claim 1, wherein each drive has a longitudinal centerline that is parallel to an axis of rotation of the corresponding drive wheel. 3. The wheelchair of claim 1, wherein the front wheel is a castor such that the castor is in contact with a support surface while the wheelchair is at rest. 4. The wheelchair of claim 1, wherein the front wheel is an anti-tip wheel such that the anti-tip wheel, in its rest position, is spaced apart from a support surface. 5. The wheelchair of claim 4, wherein the anti-tip wheel is supported by a spring in its rest position. 6. The wheelchair of claim 4, wherein at least one spring is coupled between the frame and one of the drives, the spring suspending the anti-tip wheel in its rest position. 7. The wheelchair of claim 6, wherein the front arm is not biased by a spring. 8. The wheelchair of claim 1, wherein each drive is oriented substantially transverse to the direction of wheelchair translation. 9. The wheelchair of claim 1, wherein the front arms are rigidly coupled to each drive such that each one of the drive and front arm structures is pivotally coupled to the frame at a single pivot axis. 10. The wheelchair of claim 1, further comprising a rear wheel. 11. A wheelchair comprising: a frame;a pair of opposing drives including a substantially-transversely mounted motor and gearbox;a drive wheel operatively coupled to each drive; anda chair assembly supported on the frame and being moveably coupled thereto such that the chair is forwardly moveable to enhance access to a power supply portion of the wheelchair without fully removing the chair from the frame. 12. The wheelchair of claim 11, wherein the power supply portion includes batteries that are disposed rearward of the chair support. 13. The wheelchair of claim 11, wherein the chair assembly includes a seat and a hinge coupled to the seat such that the seat is forwardly moveable by pivoting about the hinge. 14. A wheelchair comprising: a frame;a pair of opposing drive wheels;a pivoting assembly associated with each drive wheel and including a drive assembly and a front arm assembly,each drive assembly (i) including a motor and gearbox that are transversely mounted relative to the frame, (ii) operatively coupled to one of the drive wheels, and (iii) pivotally connected to the frame,each front arm assembly including a front wheel rotatably coupled to an arm, the front arm assembly is coupled to the drive assembly, whereby the drive assembly and front arm assembly pivot about the pivotal connection upon encountering an obstacle. 15. The wheelchair of claim 14, wherein the pivoting assembly is pivotally connected to the frame at only a single pivot. 16. The wheelchair of claim 15, wherein the anti-tip wheel is suspended from a ground surface on which the wheelchair travels, the wheelchair further comprising a suspension capable of acting on the arm. 17. The wheelchair of claim 14, wherein the front wheel is a castor wheel that is normally in contact with the ground surface on which the wheelchair travels. 18. The wheelchair of claim 14, wherein a centerline of a pivot axis of the pivotal connection between the drive assembly and the frame has a vertical height that is approximately the same or less than the vertical height of an axis of rotation of the front wheel. 19. The wheelchair of claim 14, further comprising a pivoting transverse beam located rearward of the drive wheels and having a pair of rear idler wheels coupled to opposing ends thereof, and at least one battery assembly that is accessible from rearward of the drive wheels. 20. The wheelchair of claim 19, wherein the pivot on which the transverse beam pivots is substantially horizontal.
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이 특허에 인용된 특허 (56)
Mulhern,James P.; Levi,Ronald; Grymko,Christopher E., Active anti-tip system for power wheelchairs.
Richey Joseph B. (Shaker Heights OH) Wakefield Theodore D. (Vermilion OH) Wainscott Alan D. (Avon Lake OH), Powered wheelchair having transversely mounted drive mechanism.
Degonda Andre,CHX ; Wuthrich Thomas,CHX, Wheelchair for transporting or assisting the displacement of at least one user, particularly for handicapped person.
Richter, Mark; Hemkens, Benjamin Phillip; Emfinger, William Alexander; Guo, Liyun, Assistive driving system for a wheelchair and method for controlling assistive driving system.
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