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:
Jul. 21, 1998
Filed:
Jul. 26, 1996
Applicant:
Inventors:
Shoji Tozawa, Hyogo, JP;
Tomoaki Ono, Hyogo, JP;
Assignee:
Shin Caterpillar Mitsubishi Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E02F / ;
U.S. Cl.
CPC ...
37348 ; 701 50 ; 414699 ;
Abstract
A method and a device to control a bucket actuator, which controls the scooping, carrying, scraping, or digging action of the bucket, automatically switches between a bucket angle-maintaining control mode and a manual operation mode. The bucket angle-maintaining control mode, which automatically maintains a bucket angle, is used when the method determines that excavating is not being performed. The method automatically switches to the manual operation mode when the method determines, from the two parameters of bucket angle and stick movement, that excavating is being performed.