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:
Jun. 16, 1992
Filed:
Jul. 29, 1988
Ronny L Barnes, O'Donnell, TX (US);
David A Gary, O'Donnell, TX (US);
Gar-Bar Corporation, O'Donnell, TX (US);
Abstract
A guidance system for an agricultural tractor includes a furrow feeler which depends from a horizontal shaft so that the shaft rotates about a horizontal axis aligned with the direction of draft. Misalignment causes rotation of the horizontal shaft, which through arms and switches causes an electric motor to turn in a first or second direction as is appropriate to cause the tractor to follow the furrow. The motor is connected by suitable transmission to a yieldable tire which engages the steering wheel of the tractor so that rotation of the tire from the motor will cause the tractor to be steered from the steering wheel. A gauge wheel forms a track furrow so that in future operations, the tractor follows the precise path as before.