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:
Sep. 30, 2014
Filed:
Nov. 18, 2011
Curtis John Graham, Peoria, IL (US);
Adam William Ostein, Edelstein, IL (US);
Patrick William Savage, Jr., Washington, IL (US);
Christopher Lee Bach, Chillicothe, IL (US);
Curtis John Graham, Peoria, IL (US);
Adam William Ostein, Edelstein, IL (US);
Patrick William Savage, Jr., Washington, IL (US);
Christopher Lee Bach, Chillicothe, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
Embodiments of an oil pump for an engine have an increased pump capacity while maintaining or marginally increasing the overall physical size of the pump. In some embodiments, this increased capacity is reflected in a pump length efficiency ratio, which compares an effective gear length (L) of first and second pump gears used in the oil pump, to an effective housing length (L). The effective housing length (L) is a longitudinal distance between surfaces on opposite ends of the oil pump that must be maintained for the oil pump to fit into an available space. Accordingly, the pump length efficiency ratio indicates how much of the effective housing length (L) can be occupied by the gears. Alternatively, the pump capacity is measured using an output flow efficiency ratio, which compares a theoretical pump flow (F) at a given gear speed (S) to the effective housing length (L) of the pump.