IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0786952
(2001-06-13)
|
우선권정보 |
AU-199709121 (1997-09-11) |
국제출원번호 |
PCT/AU98/00750
(1998-09-11)
|
국제공개번호 |
WO99/12800
(1999-03-18)
|
발명자
/ 주소 |
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
14 인용 특허 :
14 |
초록
▼
A system where a trailer/dolly (10) is lifted from the ground (by means of block and tackle, hydraulic rams, etc.) so as to locate beneath, or nest within, the chassis or sub-frame (12) of a vehicle. When it is to be used the trailer/dolly is either coupled under a vehicle or trailer as a dolly only
A system where a trailer/dolly (10) is lifted from the ground (by means of block and tackle, hydraulic rams, etc.) so as to locate beneath, or nest within, the chassis or sub-frame (12) of a vehicle. When it is to be used the trailer/dolly is either coupled under a vehicle or trailer as a dolly only or it is lowered and moved rearwardly of the vehicle so it can be towed behind the vehicle using hitch (40). The chassis (14) of the trailer/dolly is in the form of a rectangular frame which can be enlarged in size by telescopic movements of members (20A B; 22A, B etc.). A large number of small wheels (16A, B; 18A, B etc.) may be provided on sprung stub-axles.
대표청구항
▼
A system where a trailer/dolly (10) is lifted from the ground (by means of block and tackle, hydraulic rams, etc.) so as to locate beneath, or nest within, the chassis or sub-frame (12) of a vehicle. When it is to be used the trailer/dolly is either coupled under a vehicle or trailer as a dolly only
A system where a trailer/dolly (10) is lifted from the ground (by means of block and tackle, hydraulic rams, etc.) so as to locate beneath, or nest within, the chassis or sub-frame (12) of a vehicle. When it is to be used the trailer/dolly is either coupled under a vehicle or trailer as a dolly only or it is lowered and moved rearwardly of the vehicle so it can be towed behind the vehicle using hitch (40). The chassis (14) of the trailer/dolly is in the form of a rectangular frame which can be enlarged in size by telescopic movements of members (20A B; 22A, B etc.). A large number of small wheels (16A, B; 18A, B etc.) may be provided on sprung stub-axles. an operative position, in which said block defines a first length; and when said locking member is articulated into a predetermined position intermediate of the operative position and the collapsed position, said block defines a second length greater than the first length. 9. A foldable wheelchair according to claim 6, wherein said block is oriented so that when a user is received by said wheelchair the user's weight urges said block to urge the hinge into the over-center position. 10. A foldable wheelchair according to claim 6, wherein: the hinge has a first segment hingedly connected to a second segment; said block is articulable between a collapsed position and an operative position; said first side of said block having a first surface configured to mount on the first segment; and said second side of said block having a second surface configured to mount on the second segment; wherein, when said block is articulated into the operative position, said first surface and said second surface are not coplanar. 11. A foldable wheelchair according to claim 10, wherein when said block is articulated into the operative position, said inner ends mate. 12. A foldable wheelchair according to claim 6, further comprising: a frame including a pair of arm supports; and a hinge mechanism joining at least one of said arm supports to said frame for allowing said arm supports to move between open and folded positions for facilitating lateral transfer of a user onto or off a seat on said wheelchair. 13. A foldable wheelchair comprising: a frame adapted to be maintained at a generally predetermined height relative to a generally horizontal surface and including first and second frame members; a plurality of support points being disposed on said frame generally along a vertical axis relative to the generally horizontal surface; a hinge connecting said first and second frame members; and a block configured to urge said hinge into an over-center position, said block including first and second sides each including inner and outer ends, said outer end of each side being disposed adjacent a respective frame member, said inner ends being generally thicker than said outer ends so as to urge said hinge into the over-center position, wherein wheels of different sizes, for enabling self-propelling or non-self-propelling operation, being mountable at said respective support points to maintain said frame at the generally predetermined height. 14. A foldable wheelchair according to claim 13, further comprising a plurality of means for mounting a wheel on said frame, each of said means for mounting being adapted for a wheel having a unique size. 15. A foldable wheelchair according to claim 13, further comprising a plurality of sleeves or axles mounted on said frame, each of said sleeves or axles being positioned relative to said frame to accommodate a wheel having a unique size.
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