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:
Nov. 06, 2018
Filed:
Mar. 12, 2015
Etalim Inc., Vancouver, CA;
Keith Borthwick Antonelli, Vancouver, CA;
Geoffrey Donald Stalker Archibald, Vancouver, CA;
Ryan John Biffard, Calgary, CA;
Kristjan Tod Gottfried, Vancouver, CA;
Douglas Bruce Jelstad, Vancouver, CA;
Takao Kanemaru, Port Coquitlam, CA;
Briac Medard de Chardon, Vancouver, CA;
Sylvia Joan Smullin, Menlo Park, CA (US);
Thomas Walter Steiner, Burnaby, CA;
ETALIM INC., Vancouver, British Columbia, CA;
Abstract
An electromechanical transducer apparatus is disclosed and includes a housing. A static portion is substantially immobilized within the housing and includes a magnetic flux generator for generating magnetic flux, a pair of pole pieces for coupling magnetic flux through at least one of a first magnetic circuit and a second magnetic circuit, and a coil disposed to electromagnetically interact with one of the magnetic circuits. The static portion is thermally coupled to the housing via a low thermal resistance path to permit removal of heat. A movable portion includes first and second closing pieces separated from the pole pieces by first and second gaps. The closing pieces are mechanically coupled and supported for reciprocating motion about an equilibrium position which varies the gaps to cause a variation in magnetic reluctance in each of the first and second magnetic circuits.