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:
Feb. 21, 1995
Filed:
Feb. 15, 1994
Sohan L Uppal, Bloomington, MN (US);
Eaton Corporation, Cleveland, OH (US);
Abstract
A gear pump (11) is disclosed of the type comprising a housing (15,17) defining gear cavities (25) in which are rotatably disposed first (27) and second (29) gears. Each of the gears includes a gear portion and a generally cylindrical portion (37,39) on one axial side of the gear. The housing defines first (41) and second (43) cylindrical, internal pilot surfaces receiving and rotatably supporting the cylindrical portions of the gears. The engagement of each cylindrical portion and its respective internal pilot surface comprises substantially the only bearing support for the gear. One gear (27) comprises a drive gear and is driven by an input shaft (23) defining a bearing portion (51) received within a cylindrical pilot surface (55) defined by the housing. With the present invention, the primary pilot surfaces which need to be concentric are all defined by the same housing member, to facilitate accurate machining thereof. The input shaft (23) is a separate piece from the drive gear (27) and its size is not limited by the size of the gears, and may be readily replaced 'in the field' without substantial disassembly of the pump.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile