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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0228232 (1988-08-04) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 5 인용 특허 : 2 |
A boom attachment which carries a work unit pivotally at its outer end and which is pivotally connected at its inner end to an upstanding support carried by a base is attached to the rear end of a tractor by a three-point hitch and is operated from a power take-off on the rear of the tractor. The bo
A boom attachment for supporting a work unit comprising a support, a boom pivoted by a pivot at its inner end to said support for swinging movement, a work unit supported on the outer end of said boom, means for swinging said boom about said support pivot, said swinging means comprising a cylinder a
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