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:
Oct. 20, 1981
Filed:
Dec. 14, 1979
Karl Ruhl, Gerlingen, DE;
Ulrich Kemmner, Sachsenheim, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel supply pump is proposed where the pumping system comprises two individual pumping stages connected in seriatim and are both driven by the motor armature of an electromotor located in a common housing, and further where the drive of the pumping stage adjacent to the electromotor is accomplished by means of a contactless coupling assembly including permanent magnets fixed in the hub areas of the rotating parts of the adjacently disposed pumping stages. In a further preferred embodiment of the invention the permanent magnets are operatively associated by being in radial alignment but not in contact with each other and are separated in a pressure-tight manner by means of a rigid flange-like element inside the housing of the fuel supply assembly.