IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0689494
(2000-10-12)
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발명자
/ 주소 |
- Philip J. Quenzi
- Cal G. Niemela
- Curt E. Niemela
|
출원인 / 주소 |
|
대리인 / 주소 |
Van Dyke, Gardner, Linn & Burkhart, LLP
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인용정보 |
피인용 횟수 :
35 인용 특허 :
28 |
초록
▼
A plow assembly for vehicles such as pickup trucks and tractors for moving snow or other materials, as well as for bulldozers, graders and the like for excavating and grading dirt, sand, gravel or other plowable materials, has at least one extendable, forwardly pivotable plow wing which is extendabl
A plow assembly for vehicles such as pickup trucks and tractors for moving snow or other materials, as well as for bulldozers, graders and the like for excavating and grading dirt, sand, gravel or other plowable materials, has at least one extendable, forwardly pivotable plow wing which is extendable on one end of a main plow by sliding movement along the front of the plow between a retracted and an extended position. The plow wing is also pivotally mounted on a hinge for movement between an aligned position and a forwardly angled position in which the plow wing front surface extends at an angle to the plow front surface. At least one fluid power cylinder is connected to the plow wing to move the wing between the retracted, extended, aligned, and forwardly angled positions. In the preferred embodiment, an extendable plow wing is included on each end of the main plow with a pair of fluid cylinders connected to each of the respective plow wings. The fluid cylinders are operable independently of one another to move the plow wings independently between their respective retracted, extended, aligned and forwardly angled positions. When both plow wings are pivoted to their forwardly angled positions, the plow assembly has a general U-shape which facilitates pushing snow, dirt, sand or other plowable material without the material slipping off the plow blade ends. The plow wings may be pivoted to their forwardly angled positions irrespective of the degree of extension of the wings from the main plow blade. Similarly, the plow wings may be extended or retracted irrespective of the degree of forward angling of the plow wing with respect to the main plow blade.
대표청구항
▼
1. A plow assembly for vehicles, said assembly comprising:a plow having first and second ends, a front material engaging surface, and a rear surface opposite said front surface; a support for attaching said plow to the vehicle; a plow wing on said first end of said plow, said wing having inner and o
1. A plow assembly for vehicles, said assembly comprising:a plow having first and second ends, a front material engaging surface, and a rear surface opposite said front surface; a support for attaching said plow to the vehicle; a plow wing on said first end of said plow, said wing having inner and outer ends, a front, material engaging surface, and rear surface opposite said front surface, said plow wing being mounted for sliding movement along said plow at said first end between a retracted position in which said outer end of said plow wing is adjacent said first end of said plow, and an extended position in which said outer wing end is spaced outwardly of said retracted position; said plow wing including a hinge, said plow wing being pivotally mounted on said hinge for movement between an aligned position in which said material engaging surface of said plow wing is aligned with said front material engaging surface of said plow, and a forwardly angled position in which said wing front surface extends at an angle to said plow front surface; and at least one actuating device connected to said plow wing which is operable to move said plow wing between said aligned position and said forwardly angled position and to move said plow wing between said retracted and said extended positions, said at least one actuating device being operable to move said plow wing between said aligned position and said forwardly angled position at least when said plow wing is in said retracted position.
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