다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.NTIS 바로가기
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.DataON 바로가기
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.Edison 바로가기
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.Kafe 바로가기
|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||37/108R ; 180/944 ; 37/DIG ; 1 ; 37/DIG ; 20|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 50 인용 특허 : 0|
A grade cutting machine having an elongated main frame supported on three bogey-mounted individually driven endless tracks. The cutting tool is rotatably mounted on an axis transverse the front of the main frame within an enclosing bowl. A vertically adjustable moldboard is provided across the back wall of the bowl behind the cutting tool. Two of the endless tracks are mounted on vertical non-rotatable axes on opposite sides of the main frame behind the moldboard and each is provided with an extensible frame-supporting member for automatic simultaneous o...
A grade cutting machine comprising: an elongated frame member having front and rear portions; a grade cutting tool rotatably mounted on an axis transverse the front portion of said frame member and adapted to deposit loosened earth cutting therebehind; a moldboard carried by said frame member and having its lower edge extending transverse said frame member and spaced behind said cutting tool to grade said loose cuttings; means adjustably and vertically supporting the opposite ends of said moldboard from said frame member whereby the elevation of the lowe...