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:
Jan. 07, 1986
Filed:
Feb. 24, 1984
Kentaro Ichikawa, Chigasaki, JP;
Shunji Etoh, Yokohama, JP;
Tokyo Shibaura Denki Kabushiki Kaisha, Kawasaki, JP;
Abstract
A turbine shaft structure of a multistage pump-turbine comprises at least two parts of upper and lower shaft parts generally connected at a runner portion of the highest pressure stage at which adverse external or internal effect is likely to be mostly applied. The runner portion of the highest pressure stage is provided with an axially vertical hole into which an upper end portion of the lower shaft part of the turbine shaft is inserted and the inserted upper end portion is welded to the wall of the vertical hole.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile