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. 24, 2009
Filed:
Aug. 23, 2007
Minoru Karaki, Okayama, JP;
Akira Kamie, Okayama, JP;
Nobumasa Nakao, Okayama, JP;
Panasonic Corporation, Osaka, JP;
Abstract
The invention relates to a movable contact used for a sheet having a movable contact for example used for an electronic device such as a mobile phone and provides a movable contact that realizes, even when having a smaller size, a required pressing force and a favorable click touch response. To realize this, a part surrounded by a conical circumferential edge in which a circular outer circumference edge when seen from the upper side has an inclined surface forms a spherical surface-like section that swells in an upward direction. Both ends of the circle having an identical distance to center line of the circle are straightly cut off. Then, parts at which these straight cut edges intersect with the circular edges are chamfered to have a circular arc to provide a movable contact having a substantially oval shape having circular arc corners.