|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||37/81 ; 37/90 ; 37/DIG ; 15 ; 414/686|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 16 인용 특허 : 6|
A system for removably mounting a trenching attachment to hook and eye mounts on an end of a power unit. The trenching attachment includes a mounting frame having hook-engaging shafts and eye-engaging pins, a head drive assembly, a trenching boom assembly pivotally mounted to the head drive assembly, and a hydraulic boom cylinder for raising and lowering the boom assembly with respect to the mounting frame. With the boom assembly supported in a three-point stance adjacent the power unit, the cylinder is actuated in a first direction to rotate the mountin...
A trencher, including: a power unit having forward and rearward ends and a pair of laterally spaced sides; a trencher attachment removably attached to the power unit and including: a mounting frame having first and second eye-engaging pin sections and first and second hook-engaging shaft sections; and a boom assembly mounted to the mounting frame, including a digging chain mounted on the boom assembly for digging a trench; a plurality of mount means fixed at equally spaced and laterally separated positions on an end of the power unit for receiving the sh...