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:
Jan. 22, 1980
Filed:
Nov. 09, 1977
Applicant:
Inventor:
Delwin E Cobb, Peoria, IL (US);
Assignee:
Caterpillar Tractor Co., Peoria, IL (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B / ; F04B / ; F01C / ; F03C / ;
U.S. Cl.
CPC ...
417348 ; 417349 ; 417390 ; 417405 ; 418196 ;
Abstract
A pump has three gears disposed in three cavities of a housing, with the first and second gears being connected and the second and third gears being connected. A pressurized fluid source is connected to the housing for rotating the gears, whereupon fluid is drained into and expelled from housing through a plurality of passages therein.