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:
Dec. 11, 1984
Filed:
Aug. 10, 1983
Applicant:
Inventor:
John H Field, II, Medfield, MA (US);
Assignee:
Sigma Instruments Inc., Braintree, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H02K / ;
U.S. Cl.
CPC ...
310 / ; 310114 ; 310164 ; 310165 ;
Abstract
In the disclosed motor, a stator and a rotor are movable relative to each other about a common axis. The stator has stator poles with radially directed stator teeth arranged in a circle around the axis and the rotor includes a first axial portion and a second axial portion with a permanent magnet located between them. The first portion has a plurality of rotor teeth extending axially along the periphery of the first portion and the second portion has a substantially cylindrical surface.
Field, II, John. (1984). Stepping motor (U.S. Patent No. 4488069). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4488069
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile