IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0831212
(2013-03-14)
|
등록번호 |
US-9005085
(2015-04-14)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
18 인용 특허 :
2 |
초록
▼
A motor-less leg-powered curved treadmill produced that allows people to walk, jog, run, and sprint without making any adjustments to the treadmill other than shifting the user's center of gravity forward and backwards. A closed loop treadmill belt running between front and rear pulley rollers is fo
A motor-less leg-powered curved treadmill produced that allows people to walk, jog, run, and sprint without making any adjustments to the treadmill other than shifting the user's center of gravity forward and backwards. A closed loop treadmill belt running between front and rear pulley rollers is formed with a low friction running surface of transverse wooden, plastic or rubber slats attached to each other in a resilient fashion. Since an essential feature of treadmill is the concave shape of the running surface of belt in its respective upper portion, to insure that this shape is maintained during actual use. The prevents the lower portion of the treadmill belt from drooping down (i.e., it must be held taut), to prevent the concave top portion to be pulled taut into a flat shape between the front and rear pulley rollers.
대표청구항
▼
1. A motor-less, leg-powered curved treadmill comprising: a treadmill frame;said treadmill frame supporting a treadmill running surface;said treadmill running surface having a top concave surface, said treadmill running surface being of such a length as compared to the length of said treadmill frame
1. A motor-less, leg-powered curved treadmill comprising: a treadmill frame;said treadmill frame supporting a treadmill running surface;said treadmill running surface having a top concave surface, said treadmill running surface being of such a length as compared to the length of said treadmill frame to permit it to assume a required concave upper contour;a means for maintaining said treadmill running surface in said required concave upper contour, said treadmill running surface providing a running surface during exertion of walking or running force upon said upper concave portion of said treadmill surface;said treadmill running surface is maintained in a concave configuration; wherein said means is an array of a plurality of parallel axles extending across said treadmill frame; each said parallel axle of said plurality of parallel axles each having a plurality of staggered roller wheels permanently affixed to said respective parallel axles, wherein when a runner touches said treadmill running surface of said staggered roller wheels with the runner's foot, said roller wheels freely spin under the runner's foot touching said staggered roller wheels, wherein further as the runner increases running speed, said staggered roller wheels spin with more force; wherein further said roller wheels are staggered adjacent to each other with one set of rollers on a respective axle extending partially next to another set of rollers on another respective adjacent axle to minimize respective horizontal and vertical gaps between adjacent overlapping roller wheels created by one descending surface of a respective roller wheel from its apex and one ascending surface of an adjacent respective roller wheel to its respective apex, thereby rattle vibration of said rotating roller wheels against a foot of a runner is minimized; wherein said parallel axles of said motor-less, leg-powered curved treadmill extend out on one side of said frame to end in timing belt pulleys, wherein a timing belt rotates around said timing belt pulleys and engages all said axles such that if only one wheel of said array is turned, all wheels of said array turn. 2. The motor-less, leg-powered curved treadmill as in claim 1 wherein said means for maintaining said treadmill running surface in said required concave upper contour is an array of a plurality of parallel axles extending across said treadmill frame; each said parallel axle of said plurality of parallel axles each having a plurality of staggered roller wheels permanently affixed to said respective parallel axles, wherein when the runner touches said treadmill running surface of said staggered roller wheels with the runner's foot, said roller wheels freely spin under the runner's foot touching said staggered roller wheels, wherein further as the runner increases running speed, said staggered roller wheels spin with more force;wherein further said roller wheels are staggered adjacent to each other with one set of rollers on a respective axle extending partially next to another set of rollers on another respective adjacent axle to minimize respective horizontal and vertical gaps between adjacent overlapping roller wheels created by one descending surface of a respective roller wheel from its apex and one ascending surface of an adjacent respective roller wheel to its respectrive apex, thereby rattle vibration of said rotating roller wheels, against a foot of a runner is minimized. 3. The motor-less leg-powered curved treadmill as in claim 1 wherein said treadmill running surface is covered by a flexible exterior running surface loop. 4. The motor-less, leg-powered curved treadmill as in claim 2 wherein said parallel axles of said motor-less, leg-powered curved treadmill extend out on one side of said frame to end in timing belt pulleys, wherein a timing belt rotates around said timing belt pulleys and engages all said axles such that if only one wheel of said array is turned, all wheels of said array turn. 5. The motor-less, leg-powered curved treadmill as in claim 1 wherein said motor-less, leg-powered curved treadmill is provided with a removable handle bar assembly, which when installed on said motor-less, leg-powered curved treadmill, said handle bar assembly help users who are balance-challenged to use said motor-less, leg-powered curved treadmill. 6. The motor-less, leg-powered curved treadmill as in claim 1 further comprising a chassis including at least one robust cross beam attaching respective outer frames and respective inner frames on each side to each other, thereby providing a rectangular chassis. 7. The motor-less, leg-powered curved treadmill as in claim 1 further comprising level adjusters extending down from said frame to adjust the tilt of said motor-less, leg-powered curved treadmill. 8. The motor-less, leg-powered curved treadmill as in claim 1 further comprising a manual lift mechanism. 9. The motor-less, leg-powered curved treadmill as in claim 1 further comprising an electrically powered lift mechanism. 10. The motor-less, leg-powered treadmill vehicle as in claim 1 further comprising a continuous belt running on two distal pulleys, a vehicle chassis with a steering mechanism operable by a driver/operator, a braking mechanism operable by the driver/operator, a pair of axles and respective opposite wheels, said pair of axles and said respective opposite wheels powered by said leg-powered treadmill, deriving motive power from at least one person moving his or her respective legs on said continuous belt and said frame built into said vehicle chassis. 11. The motor-less, leg-powered treadmill as in claim 10 further comprising an electric motor hill assist powered from storage batteries. 12. The motor-less, leg powered treadmill as in claim 10 wherein said continuous belt has a curved upper running surface. 13. The motor-less, leg powered treadmill as in claim 10 wherein said chassis accommodates a plurality of persons. 14. The motor-less, leg powered treadmill as in claim 10 wherein said chassis accommodates a plurality of running persons and a plurality of seated persons.
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