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. 05, 2017
Filed:
Jun. 25, 2015
Snecma, Paris, FR;
Philippe Vertenoeuil, Paris, FR;
SNECMA, Paris, FR;
Abstract
A two stage pump (), where the high pressure stage (') is a gear pump (), comprises a driving of the other stage (′) by a support shaft (), mounted in the driven pinion (), the shaft () being driven by the drive shaft (), by means of a pair of toothed wheels () adjacent to the rest of the stage (′), which can allow different rotation speeds between the two stages (). The support shaft () may be supported by stops and hydrodynamic bearings, directly integrated and lubricated in the driven pinion, which make the design lighter and more compact. The shaft () and the toothed wheels () ingeniously transmit the loads from the stage (′) to the stage (′) in such a way as to cancel out the usual hydraulic loads, stemming from pressure, and mechanical, forces stemming from rotational drivings on the driven pinion ().