公开(公告)号：US3643920A

公开(公告)日：1972-02-22

申请号：US3643920D

申请日：1969-03-17

申请人： LARS HARALD WIDEGREN ,  TAGE OSKAR KESKITALO

发明人： WIDEGREN LARS HARALD ,  KESKITALO TAGE OSKAR

IPC分类号： A01G23/06 ,  B66F3/00 ,  A01G23/08

CPC分类号： A01G23/065

摘要： Timber-felling method according to which the tree is drawn up with its roots by a mechanical device, the tree being first pulled out of the ground in a vertical direction and thereafter prized at an increasing angle thereto.

摘要翻译： 木材采伐方法根据树木通过机械装置将其根部拉起，树首先从垂直方向拉出地面，然后以增加的角度被珍贵。

公开(公告)号：US3557982A

公开(公告)日：1971-01-26

申请号：US3557982D

申请日：1968-10-07

申请人： SUNE TORSTEN HENRIKSSON ,  AKE MALMGREN ,  MUOTKA R ,  LARS HARALD WIDEGREN

发明人： HENRIKSSON SUNE TORSTEN ,  MALMGREN AKE ,  MUOTKA RAGNAR LUDVIG ,  WIDEGREN LARS HARALD

IPC分类号： B60P1/16 ,  B60P1/64 ,  B65G65/02

CPC分类号： B60P1/16 ,  B60P1/6418

摘要： A transport vehicle for load-carrying purposes and consisting of a power vehicle and a trailer hingedly connected thereto, said trailer having a wheel-supported U-shaped outer stationary frame open to the rear and a U-shaped inner frame open to the rear and supported for vertical movements within said outer frame, said vehicle being distinguished in that a raising and carrying means for the inner frame in the form of a pressure fluid operated power cylinder is mounted at the rear end of each of the limbs of the outer frame as well as centrally at the frontal transverse portion of said outer frame.