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:
Jul. 07, 1981
Filed:
Nov. 29, 1979
Richard M Nelson, Portland, OR (US);
Guy F. Atkinson Company, Portland, OR (US);
Abstract
A double-case, multi-stage, centrifugal pump having a plurality of impellers mounted on a common shaft at axially spaced pump stages. The first pump stage is housed within a unitary forward case section of a three-section inner case assembly. Subsequent stages are housed within two rearward case sections disposed in axial joint-forming relationship with each other and radial joint-forming relationship with the forward case section. The inner case assembly is supported within an outer case assembly which provides a suction chamber surrounding the forward case section and a discharge chamber surrounding the rearward case sections, the inner and outer case assemblies being constructed in such manner that the pressure in the discharge chamber sealably forces the inner case sections together during operation of the pump.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile