公开(公告)号：US6041868A

公开(公告)日：2000-03-28

申请号：US988257

申请日：1997-12-10

Applicant: Janusz W. Matus ,  Mark D. Klassen ,  R. David Price

Inventor： Janusz W. Matus ,  Mark D. Klassen ,  R. David Price

IPC: A01B63/00 ,  A01B63/111

CPC classification number: A01B63/00

Abstract: A mechanism for controlling raised and lowered positions of a hitch-mounted implement includes a rotatable control knob coupled to a transducer, e.g., a potentiometer, for movement between first and second positions representing the raised and lowered positions, respectively, of the implement. The control knob has a button for locking the mechanism in the implement-transport position and for other purposes. A position knob includes a tang-like stop for limiting rotation of the control knob toward the second position. The position knob thereby "sets" a lowered position of the implement which is somewhat above the lowest possible position of the implement. The position knob may be rotated to locate the stop anywhere between two barriers which set the overall limits of travel of the control knob. Most preferably, the position knob is clamped between a barrier member and a console surface and is frictionally inhibited from rotating.

Abstract translation: 一种用于控制悬挂式工具的升高和降低位置的机构包括可旋转的控制旋钮，其连接到换能器，例如电位计，用于在代表工具的升高和降低位置的第一和第二位置之间移动。 控制旋钮具有用于将机构锁定在工具传送位置中并用于其它目的的按钮。 位置旋钮包括用于限制控制旋钮朝向第二位置旋转的柄状止动件。 位置旋钮因此“设置”了器具的下降位置，其稍微高于器具的最低可能位置。 可以旋转位置旋钮以将停止点定位在设置控制旋钮的整体行程限制的两个障碍物之间的任何地方。 最优选地，位置旋钮被夹持在阻挡构件和控制台表面之间并被摩擦地禁止旋转。