IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0123309
(2002-04-17)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
22 인용 특허 :
5 |
초록
▼
A jogging scooter is constructed to include a base holding a set of tracker rollers, two tracks mounted on the tracker rollers and arranged in parallel, a front wheel rack provided at a front side of the base, two front wheel holders respectively pivoted to the front wheel rack and linked by a link
A jogging scooter is constructed to include a base holding a set of tracker rollers, two tracks mounted on the tracker rollers and arranged in parallel, a front wheel rack provided at a front side of the base, two front wheel holders respectively pivoted to the front wheel rack and linked by a link and supporting a respective front wheel, a steering column mounted on the front wheel rack and coupled to the link for steering control, a rear wheel axle mounted in a rear side of the base and supporting a pair of rear wheels, and two gears meshed together and respectively mounted on the rear wheel axle and the rear tracker roller for transmission of rotary force.
대표청구항
▼
A jogging scooter is constructed to include a base holding a set of tracker rollers, two tracks mounted on the tracker rollers and arranged in parallel, a front wheel rack provided at a front side of the base, two front wheel holders respectively pivoted to the front wheel rack and linked by a link
A jogging scooter is constructed to include a base holding a set of tracker rollers, two tracks mounted on the tracker rollers and arranged in parallel, a front wheel rack provided at a front side of the base, two front wheel holders respectively pivoted to the front wheel rack and linked by a link and supporting a respective front wheel, a steering column mounted on the front wheel rack and coupled to the link for steering control, a rear wheel axle mounted in a rear side of the base and supporting a pair of rear wheels, and two gears meshed together and respectively mounted on the rear wheel axle and the rear tracker roller for transmission of rotary force. d sleeve includes threads on an inner circumferential surface of said sleeve, and wherein said driver includes a nut having threads formed on an outer circumferential surface in driving engagement with said sleeve threads in said first state of said chuck so that rotation of said sleeve with respect to said body and said driver moves said grip toward or away from said axial bore, and in said second state of said chuck, said driver threads are disengaged from said sleeve threads to permit axial movement of said driver with respect to said sleeve and said body. 11. The chuck as in claim 10, wherein said driver defines a plurality of axially aligned gaps formed within said driver thread and configured so that said driver thread includes a plurality of intermittently spaced thread tabs, wherein said sleeve defines a plurality of axially aligned gaps formed within said sleeve thread, and wherein said sleeve gaps and said driver thread tabs are aligned when said chuck is in said second state. 12. The chuck as in claim 11, wherein said driver defines nine said thread tabs, and said sleeve defines nine said thread gaps. 13. The chuck as in claim 11, wherein each said sleeve gap is approximately one-sixteenth of an inch in width. 14. The chuck as in claim 11, wherein each said driver thread tab is approximately one-sixteenth of an inch in width. 15. The chuck as in claim 11, wherein each said driver gap defines an unequal angular width. 16. The chuck as in claim 12, wherein the angular distance defined between adjacent pairs of said thread tabs is at least twenty degrees but not greater than sixty degrees so that said chuck defines said second state in only one rotational position of said sleeve with respect to said driver. 17. The chuck as in claim 11, wherein said chuck is in said second state in only one rotational position of said driver with respect to said sleeve. 18. A chuck for use with a manual or powered driver having a rotatable drive shaft, said chuck comprising: a generally cylindrical body having a nose section and a tail section, said tail section is adapted to rotate with the drive shaft, said nose section defining an axial bore therein; a driver axially movably disposed about said body; a generally cylindrical sleeve rotatably mounted about said body; a grip mounted in said body in communication with said axial bore and in operative communication with said driver; a stop disposed about said body and axially fixed to said body tail section; a first spring disposed between said stop and said driver; and a second spring disposed between said sleeve and said body that biases said sleeve in the axially rearward direction with respect to said body, wherein said sleeve and said driver are configured with respect to each other so that, in a first state of said chuck, rotation of said sleeve in a closing direction with respect to said body moves said grip toward the axis of said axial bore and, in a second state of said chuck, said driver is axially reciprocal with respect to said sleeve and said body without relative rotation between said sleeve and said driver, and wherein said first spring biases said driver toward said body nose section in said second state. 19. A chuck for use with a manual or powered driver having a rotatable drive shaft, said chuck comprising: a generally cylindrical body having a nose section and a tail section, said tail section being adapted to rotate with the drive shaft and said nose section defining therein an axial bore and a plurality of angularly disposed passageways intersecting at a common point in said axial bore; a driver axially movably disposed about said body, said driver including a forward section and a rearward section, said forward section including a nut, said nut defining intermittently spaced threaded tabs on an outer circumferential surface of said driver forward section; a generally cylindrical sleeve rotatably mounted about said body, said sleeve defining a
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