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:
Dec. 13, 2005
Filed:
Dec. 19, 2003
Kenric B. Rose, Howell, MI (US);
Kenric B. Rose, Howell, MI (US);
Dana Corporation, Toledo, OH (US);
Abstract
A pressurized hydraulic fluid system includes a charge pump, a hydraulic motor drivingly coupled to the charge pump, and a main hydraulic unit adapted to function as a pump to drive the hydraulic motor. The charge pump is in fluid communication with the main hydraulic unit for maintaining a sufficient inlet pressure in the main hydraulic unit when it functions as the pump. The system further includes a hydraulic fluid reservoir in fluid communication with an inlet of the charge pump, a hydraulic accumulator in fluid communication with the main hydraulic unit, and a return flow passage fluidly connecting the main hydraulic unit with the hydraulic fluid reservoir for returning an excess flow of the hydraulic fluid generated by the charge pump to the hydraulic fluid reservoir.