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. 15, 1977
Filed:
Dec. 24, 1975
Applicant:
Inventors:
Ray H Hahn, Dunlap, IL (US);
Larry G Eftefield, Joliet, IL (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
E02F / ;
U.S. Cl.
CPC ...
3712 / ; 37129 ;
Abstract
A power scraper, of the type which has a bowl with a forward cutting edge and an apron which assists in the loading of the bowl, closes the loaded bowl, and is elevated for dumping, is provided with improved apron operating means. The operating means includes a translating means which shifts the apron pivot axis from an initial position that it occupies when the apron is elevated so that the path of the lower edge of the apron to closed position is forward of and below an arc of a circle struck about said initial position of the pivot axis.