|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||239/159 ; 239/164 ; 239/166 ; 239/172|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 6 인용 특허 : 6|
A machine for distributing material over crops comprises a vehicle for moving across the ground together with a single boom which projects out from one side of the vehicle over a length which can be of the order of 120 feet. The boom is self-supporting and formed by four rails at the corners of a rectangle together with a plurality of sets of spaced cross struts and longitudinal cables so that each of the rails is under compressive load. The boom is thus self-supporting and is coupled to a center cradle only at the ends of the rails. The boom can be brok...
[ I claim:] [1.] An agricultural machine for dispensing material onto a crop comprising:a mounting frame arranged for transportation of the mounting frame on a transportation vehicle for movement across the ground in a working direction;a carrying frame supported on the mounting frame for pivotal movement relative thereto about an axis longitudinal of the working direction;a horizontal boom attached to the carrying frame and projecting outwardly therefrom to one side of the mounting frame for carrying a plurality of material dispensing elements at spaced...