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:
Mar. 02, 1982
Filed:
Dec. 26, 1979
Applicant:
Inventor:
Wayne R Miller, Dubuque, IA (US);
Assignee:
Deere & Company, Moline, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B62D / ;
U.S. Cl.
CPC ...
180133 ; 60405 ;
Abstract
An emergency steering system includes a backup pump which is driven by an electric motor, a control circuit for the motor includes a flow sensing switch and a pressure-sensing switch connected in series and operative to automatically energize the motor when a main pump is outputting no flow and the pressure at the pump outlet is below a predetermined minimum value for adequate steering operation.