Reciprocal attitude-angle self-differentiating device for pivotable wheels of handtrucks
IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0448961
(1989-12-12)
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우선권정보 |
IT-0084976 (1988-12-28) |
발명자
/ 주소 |
- Sisler Remo (Sommacampagna ITX)
|
출원인 / 주소 |
- New Technologies Srl (Verona ITX 03)
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인용정보 |
피인용 횟수 :
5 인용 특허 :
0 |
초록
▼
Reciprocal attitude angle self-differentiating device (10) for pivotable wheels (11,12;110) of handtrucks, each of the wheels (11,12;110) being respectively rotatably mounted about a substantially horizontal axis (22,23;220) belonging to a wheel supporting body (21,15;210), the body (21,15;210) bein
Reciprocal attitude angle self-differentiating device (10) for pivotable wheels (11,12;110) of handtrucks, each of the wheels (11,12;110) being respectively rotatably mounted about a substantially horizontal axis (22,23;220) belonging to a wheel supporting body (21,15;210), the body (21,15;210) being rotatably mounted about a substantially vertical axis (29,30;290), in which at least one pair of wheels belonging to the handtruck being mutually coupled by means of a device (10) comprising: a) a first coupling mechanism (14), cooperating with the supporting body (15) of the first (12) of the wheels belonging to the pair; b) a second coupling mechanism (13,25;130,250) freely movable mounted on the supporting body (21;210) of the second wheel (11;10) belonging to the pair of wheels, the second mechanism (13,25;130,250) cooperating with a third mechanism (16,24;240) integral and rigidly connected with the supporting body (21;210) of the second wheel (11;110); c) a fourth, motion transmitting, mechanism (20), cooperating with the first (14) and the second (13,25;130,250) coupling mechanisms; and d) fifth mechanism (26,27;34,35,260) being interposed between the said (13,25;130,250) coupling mechanism and the third mechanism (16,24;240) integral and rigidly connected with the supporting body (21;210) of the second wheel (11,110).
대표청구항
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A reciprocal attitude angle self-differentiating device for a hand-propelled vehicle having at least one pair of caster wheels, each of said wheels being mounted on a supporting body for rotation about an essentially horizontal axis, said supporting bodies each being rotatable about an essentially v
A reciprocal attitude angle self-differentiating device for a hand-propelled vehicle having at least one pair of caster wheels, each of said wheels being mounted on a supporting body for rotation about an essentially horizontal axis, said supporting bodies each being rotatable about an essentially vertical axis, said device comprising: a first pulley mounted on the supporting body corresponding to one wheel of said pair of wheels; a second pulley mounted on the supporting body corresponding to the other wheel of said pair of wheels; a belt disposed on said first and second pulleys; and resilient means operatively coupled to the supporting body corresponding to the other wheel of said pair of wheels for biasing the horizontal rotation axis of each caster wheel into mutual parallel alignment when the vehicle is moved along a rectilinear path in any direction while allowing instantaneous centering for curved path travel.
이 특허를 인용한 특허 (5)
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Forsberg, Kevin; White, Isaac D. M., Ladder dolly.
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Turturro, Michael; Kruse, Matthew, Method and apparatus for a locking caster.
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Turturro, Michael; Kruse, Matthew, Method and apparatus for a locking caster.
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Lorelli, Elizabeth A., Rotating assembly.
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Verhaeg John Maria,GBX ; Brookes Donald,GBX, Vehicle having wheels and castors.
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