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:
May. 30, 2006
Filed:
Dec. 17, 2004
Noboru Kobayashi, Hikone, JP;
Masashi Moriguchi, Inukami-gun, JP;
Takahiro Nishinaka, Omihachiman, JP;
Hidekazu Yabuuchi, Hikone, JP;
Ryo Motohashi, Hikone, JP;
Noboru Kobayashi, Hikone, JP;
Masashi Moriguchi, Inukami-gun, JP;
Takahiro Nishinaka, Omihachiman, JP;
Hidekazu Yabuuchi, Hikone, JP;
Ryo Motohashi, Hikone, JP;
Matsushita Electric Works, Ltd., Osaka, JP;
Abstract
A linear oscillating actuator system which is capable of canceling out the stator vibrations for driving a load with a minimum of vibrations. The system includes an oscillator carrying a permanent magnet as well as an output shaft for connection to the load. A stator assembly is incorporated within a housing and is configured to movably support the oscillator and to carry an electromagnet. The electromagnet generates a magnetic field which interacts with the permanent magnet to reciprocate the oscillator relative to the stator assembly in a linear path. A balancer is added to the system for canceling out undesired stator vibrations. The balancer are commonly supported to the stator assembly to be driven thereby in parallel with the oscillator. The balancer is configured to have a mass generally equal to that of the oscillator and to be devoid of any output member. Thus, the oscillator and the balancer are driven in a counter reciprocating manner, thereby keeping the stator assembly free from counter-vibrations and therefore driving the output shaft with a maximum output power.