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:
May. 06, 2003
Filed:
Apr. 23, 2001
Applicant:
Inventors:
Seiji Takanashi, Tsukuba-gun, JP;
Shigeru Komoriya, Tsukuba-gun, JP;
Kazuya Tamura, Tsukuba-gun, JP;
Hisashi Yajima, Tsukuba-gun, JP;
Takashi Nagao, Tsukuba-gun, JP;
Assignee:
SMC Corporation, Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01F 3/00 ; H01F 7/08 ;
U.S. Cl.
CPC ...
H01F 3/00 ; H01F 7/08 ;
Abstract
A thrust producer of a moving-magnet type includes a rod supported for upward and downward movements by an apparatus main body through an air hydrostatic bearing and a thrust producer for moving the rod up and down, the thrust producer has a magnet mounted to the rod to be displaced with the rod and a coil provided to the apparatus main body to generate magnetic force when the coil is energized, and the thrust producer produces thrust by an interaction of the magnet and the magnetic force generated by the coil.