Larry E Swenson

US Patent:

55709915, Nov 5, 1996

Filed:

Mar 9, 1995

Appl. No.:

8/403003

Inventors:

Larry E. Swenson - Bismarck ND
Michael A. Vig - Bismarck ND
Thomas M. Sagaser - Bismarck ND
Troy D. Kraft - Bismarck ND

Assignee:

Clark Equipment Company - Woodcliff Lake NJ

International Classification:

B66C 2300

US Classification:

414685

Abstract:

The present invention provides a control apparatus for controlling movement of an implement. The implement is mounted to a subframe that in turn is joined to a frame portion of the vehicle. The subframe is moveable between the working position, where the implement is operable to perform work, and a second position. The implement has a hydraulic actuator for selectively moving a portion of the implement to perform work using controlled hydraulic fluid present in a hydraulic line connected to the hydraulic actuator. The control apparatus inhibits or allows hydraulic fluid flow in the hydraulic line as a function of the position of the subframe.