The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 20, 1992
Filed:
Apr. 24, 1991
Ronald T Sheehan, Lancaster, PA (US);
Ford New Holland, Inc., New Holland, PA (US);
Abstract
An implement, such as a cutterbar on an agricultural harvesting machine, is automatically position-controlled to maintain a reference position relative to the ground surface. The implement is mounted so that it may be raised, lowered or tilted and the control is such that tilting movements are preceded by, or are carried out concurrently with, a raising or lowering movement when one end of the implement is at the reference position and the other end is between the reference position and the ground surface. Manually operated UP and DOWN switches not only control up and down movements of the implement but also inhibit and restore automatic control of implement positioning. A set/reset switch enables manual selection of a predetermined reference position or the selection of the present implement position as the reference position.