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. 31, 1989
Filed:
Sep. 02, 1988
Niels D Jensen, Bjerringbro, DK;
Erik Svarre, Bjerringbro, DK;
Grundfos International A/S, Bjerringbro, DK;
Abstract
A multistage rotary pump, which comprises a substantially closed pump body having a jacket surrounding the pump body in spaced relationship for the purpose of forming an annular return volume, a base element comprising suction and pressure connecting pieces and a top element comprising the driving motor. The jacket is provided in both its terminal portions with a peripheral contact shoulder which is acted upon in each case by an annular clamping arrangement, the clamping arrangement in question being connected on the other hand to the base element and top element, respectively. A coupling device of this nature is preferentially applied in the case of in-line rotary pumps.