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:
Apr. 02, 1985
Filed:
Nov. 21, 1983
Applicant:
Inventors:
W Ray Thornley, Hyde Park, UT (US);
James G Wiser, Logan, UT (US);
E Cordell Lundahl, Logan, UT (US);
Assignee:
Ezra C. Lundahl, Inc., Logan, UT (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A01D / ; A01D / ; A01D / ;
U.S. Cl.
CPC ...
56 102 ; 56DI / ;
Abstract
An automatic height control system for a header on a farm implement is disclosed wherein the height of the header is continuously controlled in response to the height of the crop on which the header is operating. The top of the crop is detected by sonar detection units, and appropriate electronic and electromechanical means are provided for controlling the height of the header in response to signals from the sonar detection units.