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:
Jun. 09, 2020
Filed:
Apr. 14, 2017
Nidec Copal Corporation, Tokyo, JP;
Shin Odajima, Tokyo, JP;
Nidec Copal Corporation, Tokyo, JP;
Abstract
A vibration actuator has a frame; a first spring, supported on one end within the frame and the other end vibrates along an axial direction. A second spring, supported on one end within the frame, and the other end vibrates along the axial direction. A first weight connected to the other end of the first spring and a second weight connected to the other end of the second spring. A magnet portion protrudes in the axial direction is in the first weight and a coil wrapped around the magnet portion is in the second weight. A driving current of a frequency that is a first resonant frequency set by the spring constant of the first spring and the mass of the first weight or a second resonant frequency set by the spring constant of the second spring and the mass of the second weight is applied to the coil.