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:
May. 19, 1981
Filed:
Mar. 19, 1979
Applicant:
Inventor:
Fritz Haupt, Regensdorf, CH;
Assignee:
Maag Gearwheel & Machine Company Ltd., Zurich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04C / ; F04C / ; F16J / ; F16J / ;
U.S. Cl.
CPC ...
418135 ; 418206 ; 277 27 ; 277 65 ; 277 70 ; 277 74 ; 277 / ;
Abstract
A gear pump having a housing and a pump space or chamber within which there are arranged two intermeshing, fluid-conveying gears, each gear being arranged upon an associated shaft. Each shaft is provided at least at the one side of the related gear with a shaft bearing and between such shaft bearing and the gear a sliding ring packing or seal which bounds the pump space or chamber. The sliding ring packing comprises two concentric sliding rings arranged at least approximately in a common radial plane, there being formed between such sliding rings an intermediate space which can be impinged with a barrier or blocking fluid.