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. 22, 2012
Filed:
Sep. 03, 2008
Yoshio Naka, Okayama, JP;
Tamotsu Yamamoto, Hyogo, JP;
Takumi Nishimoto, Okayama, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A rotary input device includes a circular ring shaped operation body, a magnetic first guide plate fixed to the bottom of the operation body, movable magnets disposed on the bottom of a first flat plane of the first guide plate concentrically with the operation body, a base for rotatably supporting the operation body from beneath, a detection element for detecting a change in magnetic field from the movable contacts due to rotating operation of the operation body without making contact, and a magnetic second guide plate fixed to the base having a plurality of second flat planes opposite to the position of the movable magnets so as to be opposite to each one of the movable magnets. The movable magnets face to or depart from each one of the second flat planes of the second guide plate depending on the rotation of the operation body.