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. 22, 1999
Filed:
Aug. 26, 1996
Akira Tamura, Komaki, JP;
Tadashi Endo, Komaki, JP;
Eiji Uematsu, Komaki, JP;
Daisuke Emura, Komaki, JP;
CKD Corporation, , JP;
Abstract
A magnetic screw device comprising an internal (male) magnetic screw having the even number of magnetized bands spirally magnetized on an outer surface with contiguous magnetized bands having opposite polarities and an external (female) magnetic screw having the even number of magnetized bands spirally magnetized on the same outer surface with contiguous magnetized bands having opposite polarities. The internal and external magnetic screws are composed of a plurality of spiral cylindrical magnets disposed in its axis direction, the spiral cylindrical magnet being formed of short cylindrical permanent magnet materials on each outer or inner surface which is spirally magnetized. The internal magnetic screw includes a rod member to support the inner spiral cylindrical magnets.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile