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, 1980
Filed:
Jul. 14, 1978
Applicant:
Inventor:
Fritz Haupt, Regensdorf, CH;
Assignee:
Maag Gear Wheel & Machine Company, Zurich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C / ; F04C / ; F16H / ;
U.S. Cl.
CPC ...
418206 ; 74401 ;
Abstract
A gear pump of the kind in which auxiliary gearing is relied upon to produce synchronized movement between intermeshed pumping gears includes one gearwheel of the auxiliary gearing mounted on a shaft means are provided for supplying hydraulic fluid under pressure to an interface between the gearwheel and the shaft so as to allow the gearwheel to be expanded hydraulically in order to effect relative angular adjustment between the gearwheel and the shaft for locating the pumping gears at their required relative angular positions.