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:
Jul. 01, 1980
Filed:
Jan. 02, 1979
Applicant:
Inventor:
Ralph Hurst, Clifton Park, NY (US);
Assignee:
Exxon Enterprises, Inc., New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 13 ; 310 14 ; 310 23 ; 310216 ;
Abstract
A generally cylindrical armature for a linear motor includes an outer diameter region of involute laminate construction. Restricting the laminate assembly to an outer diameter region of the armature, which region constitutes a high magnetic flux density region, minimizes an arc of involute .alpha.. Minimizing the arc of involute .alpha. approximates more closely a true radial disposition of the involute laminations, thereby increasing the ability of the laminations to reduce eddy current losses, therein providing the basis for a more efficient linear motor.