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:
Apr. 19, 2016
Filed:
Dec. 02, 2013
Thales, Neuilly sur Seine, FR;
Stephane Vezain, Cannes la Bocca, FR;
Yannick Baudasse, Cannes la Bocca, FR;
Yasmina Gafari, Cannes la Bocca, FR;
THALES, Courbevoie, FR;
Abstract
In precision mechanical actuators, wherein a high precision stepping motor can notably be used in the actuating mechanisms of artificial satellites, a stepping motor comprises two rotors that rotate in opposite directions to generate a low-amplitude movement between one of the rotors and a stator. The first rotor comprises a first set of teeth distributed at a first pitch pand a second set of teeth distributed at a second pitch p. The stator comprises N stator contacts comprising a plurality a of teeth distributed at the pitch p, distributed at a third pitch equal to p(a+/N), and able to cooperate with the teeth of the first set. The second rotor comprises N rotor contacts comprising a plurality b of teeth distributed at the pitch p, distributed at a fourth pitch equal to p(b+/N), and able to cooperate with the teeth of the second set of the first rotor.