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:
Jun. 13, 2000
Filed:
Aug. 13, 1997
Atsushi Imai, Asaka-shi Saitama, JP;
Other;
Abstract
A pump utilizing a helical seal comprises a barrel member 4, a cylindrical core member 1 eccentrically arranged in said barrel member 4 and a helical seal 3 arranged between said cylindrical core member 1 and said barrel member 4. As the barrel member 4 and the cylindrical core member 1 are made to revolve relative to each other, the helical fluid path defined by the helical seal, the cylindrical core member 1 and the barrel member changes its capacity and the fluid contained in the barrel member is forced to axially move. Thus, the fluid is subjected not only to the axial force but also to the pressure that increases as the capacity of the helical fluid path formed by the helical seal is reduced by the relative revolution of the cylindrical core member 1 and the barrel member 4.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile