Wheelchair comprising a remote control
First Claim
Patent Images
1. A wheelchair (1) for moving a person seated thereon comprising:
- a chair frame (2) having wheels (3, 4) that are rotatably supported by said chair frame (2), a seating surface (31) supported on said frame, at least two of said wheels being manually rotatable by a person seated on the wheelchair seating surface for manually moving the wheel chair while occupied with the person seated thereon, an electrical drive system (26, 47) including a storage battery (47) for providing electrical power and at least one electric motor for driving at least one of said wheels (3), said drive system (26, 47) having a power capability for applying force to said at least one driven wheel (3) that is sufficient for moving the wheelchair when unoccupied with no person seated on the seating surface but has insufficient power for moving the wheelchair when occupied by a person seated thereon and supporting the weight of the person, a remote control (40, 41, 51) for remotely controlling operation of said drive system (27, 47) such that the wheelchair may be moved and controlled by the remote-control (40, 41, 51) when unoccupied.
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Abstract
A wheelchair having a remote controlled electric drive system so that the user is able to move the wheelchair away or retrieve it without the assistance of another person. The electric drive system includes multiple safety features for precluding hazardous situations that result from accidentally or unintentionally setting the drive system in motion while the wheelchair is occupied.
33 Citations
31 Claims
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1. A wheelchair (1) for moving a person seated thereon comprising:
a chair frame (2) having wheels (3, 4) that are rotatably supported by said chair frame (2), a seating surface (31) supported on said frame, at least two of said wheels being manually rotatable by a person seated on the wheelchair seating surface for manually moving the wheel chair while occupied with the person seated thereon, an electrical drive system (26, 47) including a storage battery (47) for providing electrical power and at least one electric motor for driving at least one of said wheels (3), said drive system (26, 47) having a power capability for applying force to said at least one driven wheel (3) that is sufficient for moving the wheelchair when unoccupied with no person seated on the seating surface but has insufficient power for moving the wheelchair when occupied by a person seated thereon and supporting the weight of the person, a remote control (40, 41, 51) for remotely controlling operation of said drive system (27, 47) such that the wheelchair may be moved and controlled by the remote-control (40, 41, 51) when unoccupied. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A wheelchair (1) for moving a person seated thereon comprising:
a chair frame (2) having wheels (3, 4) that are rotatably supported by said chair frame (2), a seating surface (31) supported on said frame, at least two of said wheels being manually rotatable by a person seated on the wheelchair seating surface for manually moving the wheel chair while occupied with the person seated thereon, an electrical drive system (26, 47) including a storage battery (47) for providing electrical power and at least one electric motor for driving at least one of said wheels (3), a controllable clutch (21, 28) arranged in a drive connection between said electric motor (26) and said at least one driven wheel (3), said clutch being moveable to a disengaged state in response to the weight of a person seated on said seating surface and said clutch being movable to an engaged state when the wheelchair (1) is unoccupied with no person seated on the seating surface, a remote control (40, 41, 51) for controlling the drive system (26, 47) remotely, and said remote control including a remote-control receiver (51) mounted on the wheelchair (1). - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
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23. A wheelchair (1) for moving a person seated thereon comprising:
a chair frame (2) having wheels (3, 4) that are rotatably supported by said chair frame (2), a seating surface (31) supported on said frame, at least two of said wheels being manually rotatable by a person seated on the wheelchair seating surface for manually moving the wheel chair while occupied with the person seated thereon, an electrical drive system (26, 47) including a storage battery (47) for providing electrical power and at least one electric motor for driving at least one of said wheels (3), a controllable electric switchgear (60) arranged between the electric motor (26) and the storage battery (47), said switchgear being movable to a switched off state in response to the weight of a person seated on said seating surface and said switch gear being movable to a switched on state when the wheelchair (1) is unoccupied with no person seated on the seating surface, a remote control (40, 41, 51) that serves for controlling the drive system (26, 47) remotely, and said remote control including a remote-control receiver (51) mounted on the wheelchair (1). - View Dependent Claims (24, 25, 26, 27, 28)
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29. A wheeled structure for supporting of the weight of a person for movement during usage comprising:
a frame (2) having wheels (3, 4) that are rotatably supported by said chair frame (2), at least two of said wheels being manually rotatable by a person supported on said chair frame for manually moving the wheel chair while occupied by the person, an electrical drive system (26, 47) including a storage battery (47) for providing electrical power and at least one electric motor for driving at least one of said wheels (3), said drive system (26, 47) having a power capability for applying force to said at least one driven wheel (3) that is sufficient for moving the wheelchair when unoccupied by a person with no weight of the person supported by the frame but insufficient for moving the wheelchair when said frame is supporting the weight of the person during usage, a remote control (40, 41, 51) for remotely controlling operation of said drive system (27, 47) such that the wheelchair may be moved and controlled by the remote-control (40, 41, 51) when not in use by the person. - View Dependent Claims (30, 31)
Specification