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:
Apr. 01, 2014
Filed:
Feb. 25, 2013
Hydro-gear Limited Partnership, Sullivan, IL (US);
Thomas J. Langenfeld, Sullivan, IL (US);
Shane A. Deters, Mattoon, IL (US);
Hydro-Gear Limited Partnership, Sullivan, IL (US);
Abstract
A drive apparatus is provided with a center section in a housing and having a hydraulic circuit formed therein with pump and motor running surfaces for connecting a hydraulic pump to a hydraulic motor. A pair of cylindrical openings may be formed on the center section opposite the pump running surface, and a passage in the center section connects the pair of cylindrical openings to form a fluid gallery to provide hydraulic fluid to the hydraulic circuit through a pair of check valves. A pair of caps on the center section to close off the fluid gallery, and an external charge pump to provide charged fluid to the fluid gallery, may also be provided.