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:
Sep. 05, 1978
Filed:
Dec. 23, 1976
Applicant:
Inventor:
John H Field, Norfolk, MA (US);
Assignee:
Sigma Instruments, Inc., Braintree, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 / ;
Abstract
In the disclosed motor, teeth on winding-energized stator poles project radially toward equally-pitched radially projecting rotor teeth energized by a permanent magnet. The pitches of the teeth on each stator pole vary but have an average pitch approximately equal to the pitch of the rotor teeth.
Field, John. (1978). Synchronous motor with heterogeneously pitched teeth (U.S. Patent No. 4112319). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4112319
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile