IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0275972
(2014-05-13)
|
등록번호 |
US-9630641
(2017-04-25)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
14 |
초록
▼
A carrier with a stair climbing aid includes a carrier including a top surface, a bottom surface, and a front surface and a rear surface between the top surface and the bottom surface, at least one guide bar attached to the rear surface, the guide bar having a first end disposed proximate a corner b
A carrier with a stair climbing aid includes a carrier including a top surface, a bottom surface, and a front surface and a rear surface between the top surface and the bottom surface, at least one guide bar attached to the rear surface, the guide bar having a first end disposed proximate a corner between the bottom surface and the rear surface and a second end at least as high as stair risers of stairs expected to be climbed, at least one elongated member movably attached to the guide bar, and an arrangement for urging a top end of the elongated, member toward the second end of the guide bar.
대표청구항
▼
1. A carrier with a stair climbing aid, comprising: the carrier comprising a top surface, a bottom surface, and a front surface and a rear surface between the top surface and the bottom surface;at least one guide bar attached to the rear surface, the guide bar having a first end disposed proximate a
1. A carrier with a stair climbing aid, comprising: the carrier comprising a top surface, a bottom surface, and a front surface and a rear surface between the top surface and the bottom surface;at least one guide bar attached to the rear surface, the guide bar having a first end disposed proximate a corner between the bottom surface and the rear surface and a second end at least as high as stair risers of stairs expected to be climbed;at least one elongated member movably attached to the guide bar, a substantial portion of the elongated member being flexible and configured for contacting a nosing of the stair during operation; andmeans for urging a top end of the elongated member toward the second end of the guide bar. 2. The carrier as set forth in claim 1, comprising at least one wheel at the corner between the bottom surface and the rear surface, the first end of the guide bar being disposed even with or below an uppermost point on the at least one wheel that is even with the rear surface. 3. The carrier as set forth in claim 2, wherein at least a portion of the at least one wheel is disposed rearwardly of the rear surface of the carrier, and wherein a rearward surface of the elongated member is disposed rearwardly of the rear surface of the carrier. 4. The carrier as set forth in claim 3, wherein the rearward surface of the elongated member is disposed between a rearwardmost point of the at least one wheel and the rear surface of the carrier. 5. The carrier as set forth in claim 3, wherein the rearward surface of the elongated member is disposed even with a rearward most point of the at least one wheel. 6. The carrier as set forth in claim 3, wherein the rearward surface of the elongated member is disposed rearwardly of a rearwardmost point of the at least one wheel. 7. The carrier as set forth in claim 1, wherein the urging means comprises a spring. 8. The carrier as set forth in claim 1, wherein the urging means comprises an elastic cord. 9. The carrier as set forth in claim 1, wherein the urging means comprises a drive. 10. The carrier as set forth in claim 1, wherein the elongated member is attached to and slidable relative to the first end of the guide bar at a bottom end of the elongated member. 11. The carrier as set forth in claim 10, wherein the elongated member is attached to but slidable relative to the guide bar at the top end of the elongated member. 12. The carrier as set forth in claim 11, wherein the urging means connects the top end of the elongated member to the guide bar. 13. The carrier as set forth in claim 1, wherein the at least one elongated member comprises a plurality of elongated members. 14. The carrier as set forth in claim 13, wherein the at least one guide bar comprises a plurality of guide bars. 15. The carrier as set forth in claim 1, wherein the urging means is adapted to urge a bottom end of the elongated member toward the first end of the guide bar. 16. A carrier with a stair climbing aid, comprising: the carrier comprising a top surface, a bottom surface, and a from surface and a rear surface between the top surface and the bottom surface;at least one oxide bar attached to the rear surface, the guide bar having a first end disposed proximate a corner between the bottom surface and the rear surface and a second end at least as high as stair risers of stairs expected to be climbed;at least one elongated member movably attached to the guide bar, a substantial portion of the elongated member being flexible and configured for contacting a nosing of the stair during operation; andmeans for urging a bottom end of the elongated member toward the first end of the guide bar. 17. A stair climbing aid for a carrier, the carrier comprising a top surface, a bottom surface, and a front surface and a rear surface between the top surface and the bottom surface, the stair climbing aid comprising: at least one guide bar attachable to the rear surface, the guide bar having a first end adapted to be disposed proximate a corner of the carrier between the bottom surface and the rear surface and a second end adapted to be disposed at least as high as stair risers of stairs expected to be climbed;at least one elongated member movably attached to the guide bar, a substantial portion of the elongated member being flexible and configured for contacting a nosing of the stair during operation; andmeans for urging at least one of a top end of the elongated member toward the second end of the guide bar and a bottom end of the elongated member toward the first end of the guide bar.
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