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:
Jan. 31, 2006
Filed:
Jun. 17, 2003
Hiroaki Shimizu, Hikone, JP;
Hidekazu Yabuuchi, Hikone, JP;
Masashi Moriguchi, Inugami-gun, JP;
Noboru Kobayashi, Hikone, JP;
Ryo Motohashi, Hikone, JP;
Ryuji Otani, Osaka, JP;
Hiroaki Shimizu, Hikone, JP;
Hidekazu Yabuuchi, Hikone, JP;
Masashi Moriguchi, Inugami-gun, JP;
Noboru Kobayashi, Hikone, JP;
Ryo Motohashi, Hikone, JP;
Ryuji Otani, Osaka, JP;
Matsushita Electric Works, Ltd., Osaka, JP;
Abstract
In an oscillation type linear actuator for reciprocally moving a plurality of moving members held in parallel with each other in a predetermined direction owing to electromagnetic action between a stator and them, two moving members reciprocally moving in opposite phases with each other are coupled by a coupling member having spring function, and a non-displacing portion of a plate spring portion of the coupling member which is not displaced substantially is restricted by a stopper. Even when an external force is applied to one of two moving members reciprocally moving in the opposite phases each other, motion of the other moving member is transmitted to the moving member via the coupling member, so that reduction of amplitude of the moving member to which the external force is applied can be restricted, and a balance of amplitudes of two moving members is maintained.