Wheelchair Comprising a Remote Control
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Accused Products
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.
21 Citations
59 Claims
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1-28. -28. (canceled)
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29. 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), at least two of said wheels being manually movable, a seating surface (31) supported on said frame, 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 such that the force for moving the wheelchair (1) applied to said at least one driven wheel (3) is less than the force required for moving the wheelchair when occupied by a person seated thereon, 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 (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. 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), at least two of said wheels being manually movable, a seating surface (31) supported on said frame, 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 in disengaged state when the wheelchair (1) is occupied by a person and in the engaged state when the wheelchair (1) is unoccupied, 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 (44, 45, 46, 47, 48, 49, 50)
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51. 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), at least two of said wheels being manually movable, a seating surface (31) supported on said frame, 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 in a switched off state when the wheelchair (1) is occupied by a person and a switched on state when the wheelchair (1) is unoccupied, 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 (52, 53, 54, 55, 56)
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57. A wheeled structure for supporting at least part 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), 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 such that the force for moving the wheelchair (1) applied to said at least one driven wheel (3) is less than the force required for moving the wheelchair when supporting said at least part of 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 (58, 59)
Specification