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:
Nov. 02, 1999
Filed:
Dec. 10, 1997
Applicant:
Inventor:
Ronnie L Satzler, Princeville, IL (US);
Assignee:
Caterpillar Inc., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B62D / ;
U.S. Cl.
CPC ...
180-644 ; 180-63 ;
Abstract
A method is provided for controlling steering in a hydrostatic drive system having a differential steer mechanism that uses flow from the hydrostatic drive system to drive the differential steer motor. The method utilizes independently controlled brakes on the respective right and left drive units to assist the differential steer mechanism in the event the pressurized fluid from the hydrostatic drive system is reduced during the operation of the machine.