Tracked mobility device
First Claim
1. A tracked mobility device, comprising:
- a) a frame supporting a seat;
b) a pair of track drives connected to said frame, with each track drive comprising a powered center drive wheel, a front roller, a rear roller, and a flexible track;
wherein said center drive wheel has a first diameter, said front roller has a second diameter, and said rear roller has a third diameter,wherein said center drive wheel diameter is at least 20% greater than either said front roller diameter or said rear roller diameter;
c) a rear wheel assembly connected to said frame and comprising three wheels sharing a common axle, said rear wheel assembly comprising a center wheel having a center wheel diameter, a first outer wheel having a diameter at least 10% smaller than said center wheel diameter, and a second outer wheel having a diameter at least 10% smaller than said center wheel diameter; and
d) a controller effective for controlling the speed and direction of rotation of each of the track drives.
2 Assignments
0 Petitions
Accused Products
Abstract
A tracked mobility device includes: a) a frame supporting a seat; b) a pair of track drives connected to the frame, with each track drive including a powered center drive wheel, a front roller, a rear roller, and a flexible track, with the center drive wheel having a diameter that is at least 50% greater than the diameter of either the front roller or the rear roller, and c) a rear wheel assembly connected to the frame, with the rear wheel assembly having three wheels sharing a common axle, with the diameter of the center rear wheel being at least 10% larger than the diameter of the two outer rear wheels; d) a source of power to power said center drive wheels; and e) a controller effective for controlling the speed and direction of rotation of each of the track drives.
42 Citations
18 Claims
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1. A tracked mobility device, comprising:
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a) a frame supporting a seat; b) a pair of track drives connected to said frame, with each track drive comprising a powered center drive wheel, a front roller, a rear roller, and a flexible track; wherein said center drive wheel has a first diameter, said front roller has a second diameter, and said rear roller has a third diameter, wherein said center drive wheel diameter is at least 20% greater than either said front roller diameter or said rear roller diameter; c) a rear wheel assembly connected to said frame and comprising three wheels sharing a common axle, said rear wheel assembly comprising a center wheel having a center wheel diameter, a first outer wheel having a diameter at least 10% smaller than said center wheel diameter, and a second outer wheel having a diameter at least 10% smaller than said center wheel diameter; and d) a controller effective for controlling the speed and direction of rotation of each of the track drives. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 10)
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9. A tracked mobility device, comprising:
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a) a frame supporting a seat; b) a pair of track drives connected to said frame, with each track drive comprising a powered drive wheel, a first roller, a second roller, and a flexible track; wherein said drive wheel has a first diameter, said first roller has a second diameter, and said second roller has a third diameter, wherein said drive wheel diameter is at least 20% greater than either said first roller diameter or said second roller diameter; c) a rear wheel assembly connected to said frame and comprising three wheels sharing a common axle, with said three wheels comprising a center wheel having a center wheel diameter, a first outer wheel having a diameter at least 10% smaller than said center wheel diameter, and a second outer wheel having a diameter at least 10% smaller than said center wheel diameter; and d) a controller effective for controlling the speed and direction of rotation of each of the track drives. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification