Portable conveyance with towing guide assembly
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B62K-003/02
B62K-015/00
B62K-003/00
출원번호
US-0639810
(2015-03-05)
등록번호
US-9376158
(2016-06-28)
발명자
/ 주소
McCormick, Robert
Kong, Zhenghua
Chang, Wei
Wang, Yazhao
Wang, Kai
출원인 / 주소
Probity Cell LLC
대리인 / 주소
Fish & Richardson P.C.
인용정보
피인용 횟수 :
4인용 특허 :
4
초록▼
A portable conveyance has a deck, a front drive wheel proximately disposed to a first end of the deck and a rear drive wheel attached proximate to a second end of the deck. A guide roller assembly attached proximate to the rear drive wheel. The guide roller assembly has a first rotational axis and t
A portable conveyance has a deck, a front drive wheel proximately disposed to a first end of the deck and a rear drive wheel attached proximate to a second end of the deck. A guide roller assembly attached proximate to the rear drive wheel. The guide roller assembly has a first rotational axis and the rear drive wheel rotates about a second rotational axis different from the first rotational axis and parallel to the first rotational axis, such that the guide roller assembly is not in contact with a substantially flat surface when the first and rear drive wheels are in contact with the substantially flat surface, and the guide roller assembly is in rotational contact with the surface when the deck is lifted into a towing position.
대표청구항▼
1. A portable conveyance, comprising: a deck defining a longitudinal axis and first and second ends disposed along the longitudinal axis;a front drive wheel proximately disposed to the first end of the deck and a rear drive wheel attached proximate to a second end of the deck, and wherein the deck d
1. A portable conveyance, comprising: a deck defining a longitudinal axis and first and second ends disposed along the longitudinal axis;a front drive wheel proximately disposed to the first end of the deck and a rear drive wheel attached proximate to a second end of the deck, and wherein the deck defines a substantially planar support surface upon which a rider of the personal conveyance is supported while riding the personal conveyance;a guide roller assembly attached proximate to the rear drive wheel;wherein: the guide roller assembly has a first rotational axis and the rear drive wheel rotates about a second rotational axis different from the first rotational axis and parallel to the first rotational axis, such that the guide roller assembly is not in contact with a substantially flat surface when the first and rear drive wheels are in contact with the substantially flat surface, and the guide roller assembly is in rotational contact with the substantially flat surface when the deck is lifted into a towing position andfurther comprising: a tow handle mounted proximate to the front drive wheel, wherein the tow handle facilitates the lifting of the deck into the towing position;at least a first sleeve on a first side of the longitudinal axis, and wherein the tow handle comprises a first tube inserted into the first sleeve; anda tow handle locking apparatus that locks the tow handle in a stored position and also in a separate, extended position, wherein in the stored position the tow handle is not extended from the deck and in the extended position the tow handle is extended from the deck. 2. The portable conveyance of claim 1, wherein: the guide roller assembly comprises: a first guide wheel attached proximate to the rear drive wheel on a first side of the rear drive wheel; anda second guide wheel attached proximate to the rear drive wheel on a second side of the rear drive wheel that is opposite the first side of the rear drive wheel;wherein: the first and second guide wheels rotate about the first rotational axis; andthe first and second guide wheels are attached proximate to the rear drive wheel such that the first and second guide wheels are not in contact with a substantially flat surface when the first and rear drive wheels are in contact with the substantially flat surface, and the first and second guide wheels and the rear drive wheel are in contact with the substantially flat surface when the deck is lifted into a towing position. 3. The portable conveyance of claim 1, further comprising: a steering tube having a first end and a second end, wherein: a steering handle is attached to the second end of the steering tube;the steering tube is pivotally attached to the first end of the deck; anda steering tube locking apparatus that locks the steering tube in a drive position and in a separate, stowed position, wherein in the drive position the front drive wheel is operatively positioned to be in contact with the substantially flat surface with the rear drive wheel, and wherein in the stowed position the steering handle, the first guide wheel and the second guide wheel define at least a three-point support stand on which the portable conveyance may be vertically stowed. 4. The portable conveyance of claim 3, wherein the front drive wheel is attached to the first end of the steering tube. 5. The portable conveyance of claim 4, wherein the three-point support stand defined by the steering handle, the first guide wheel and the second guide wheel precludes the rear drive wheel from contacting the substantially flat surface when the portable conveyance is vertically stowed. 6. The portable conveyance of claim 4, wherein: the tow handle extends from the first end of the deck from the stored position to the extended position; andthe steering tube further comprises a pivot arm having a first end rigidly connected to the steering tube and a second end pivotally attached to the first end of the deck, and when the steering tube is locked in the drive position the front drive wheel is separated from the first end of the deck by a first offset distance and from the tow handle by a second offset distance. 7. The portable conveyance of claim 6, wherein the second offset distance is less than the first offset distance. 8. The portable conveyance of claim 1, further comprising a fender attached to the second end of the deck and covering at least a portion of the rear drive wheel and having a distal portion extending beyond the rear drive wheel in the direction of the longitudinal axis; and wherein the distal portion of the fender, the first guide wheel and the second guide wheel define at least a three-point support stand on which the portable conveyance may be vertically stowed. 9. The portable conveyance of claim 2, wherein the guide roller assembly further comprises: a first extension arm attached to a first side of the of the second end of the deck and having a first distal portion extending beyond the second end of the deck;a second extension arm attached to a second side of the of the second end of the deck and having a second distal portion extending beyond the second end of the deck; andwherein the first guide wheel is attached to the first distal portion of the first extension, and the second guide wheel is attached to the second distal portion of second extension. 10. The portable conveyance of claim 9, wherein the first and second extension arms are rigidly attached to the first and second sides of the deck. 11. The portable conveyance of claim 9, wherein the first and second extension arms are flexibly attached to the first and second sides of the deck. 12. The portable conveyance of claim 9, wherein the first and second extension arms are foldably attached to the first and second sides of the deck, and wherein the first and second extension arms foldably extend outward so that back portions of the first and second guide wheels extends beyond a back portion of the rear drive wheel. 13. The portable conveyance of claim 2, wherein the guide roller assembly further comprises: a first extension arm attached to a first side of the of the second end of the deck and having a first distal portion extending, in the direction of the longitudinal axis, toward a rear surface of the rear drive wheel;a second extension arm attached to a second side of the second end of the deck and having a second distal portion extending, the direction of the longitudinal axis, toward the rear surface of the rear drive wheel; andwherein when the first guide wheel is attached to the first distal portion of the first extension, and the second guide wheel is attached to the second distal portion of second extension, a back portion of the first guide wheel extends beyond a back portion of the rear drive wheel, and a back portion of the second guide wheel extends beyond a back portion of the rear drive wheel. 14. The portable conveyance of claim 1, wherein: the guide roller assembly comprises: a first extension arm attached to a first side of the of the second end of the deck and having a first distal portion extending, in the direction of the longitudinal axis, beyond a rear surface of the rear drive wheel;a roller rotationally connected to the first distal portion of the first extension arm. 15. The portable conveyance of claim 14, further comprising: a second extension arm attached to a second side of the of the second end of the deck and having a second distal portion extending, the direction of the longitudinal axis, beyond the rear surface of the rear drive wheel; andwherein the roller is also rotationally connected to the second distal portion of the second extension arm. 16. The portable conveyance of claim 1, wherein the guide roller assembly and the rear drive wheel are in contact with the substantially flat surface when the deck is lifted into a towing position. 17. A portable conveyance, comprising: a deck defining a longitudinal axis and first and second ends disposed along the longitudinal axis;a first drive wheel proximately disposed to the first end of the deck and a second drive wheel attached proximate to a second end of the deck, and wherein the deck defines a substantially planar support surface upon which a rider of the personal conveyance is supported while riding the personal conveyance;a steering tube having a first end attached to one of the drive wheels and a steering handle attached to a second end of the steering tube;a tow handle mounted proximate to one of the drive wheels, wherein the tow handle facilitates the lifting of the deck into the towing position, the tow handle mounted separate from the steering tube and steering handle; anda guide roller assembly attached proximate to the drive wheel that is opposite the drive wheel to which the tow handle is proximately mounted;wherein: the guide roller assembly has a first rotational axis and the drive wheel to which the guide roller assembly is proximately mounted rotates about a second rotational axis different from the first rotational axis and parallel to the first rotational axis, such that the guide roller assembly is not in contact with a substantially flat surface when the first and rear drive wheels are in contact with the substantially flat surface, and the guide roller assembly is in rotational contact with the substantially flat surface when the deck is lifted into a towing position. 18. The portable conveyance of claim 17, wherein: the first drive wheel is a front drive wheel;the second drive wheel is a rear drive wheel;the tow handle is mounted proximate to the front drive wheel; andthe guide roller assembly is mounted proximate to the rear drive wheel. 19. The portable conveyance of claim 17, wherein: the first drive wheel is a front drive wheel;the second drive wheel is a rear drive wheel;the tow handle is mounted proximate to the rear drive wheel; andthe guide roller assembly is mounted proximate to the front drive wheel.
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이 특허에 인용된 특허 (4)
Kosco, James M.; Martis, Charles J.; Lamoreux, III, Sterling G., Collapsible vehicle.
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