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. 06, 1981
Filed:
Mar. 08, 1979
Applicant:
Inventor:
Wolfgang Jaffe, Roselle Park, NJ (US);
Assignee:
The Singer Company, Stamford, CT (US);
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 14 ; 335229 ;
Abstract
A linear motor is provided with a coil, a plunger selectively positionable thereby, a permanent magnet concentric with the coil and plunger having oppositely polarized magnetic poles on outer and inner surfaces creating a magnetic circuit extending through the plunger, end caps of non-magnetizable material in line with the plunger, and an output shaft of non-magnetizable material extending through an end cap.