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. 12, 2001
Filed:
Mar. 14, 2000
Takaya Nakamura, Fukui, JP;
Yoshihiko Kamimura, Fukui, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A switch substrate (,) is provided on the upper surface with a pluralities of fixed contact points (,A,,B), and a driving body (,) made of an elastic material is placed over the switch substrate (,). The driving body (,) is integrally formed of a center press portion (,) and a periphery press portion (,) corresponding respectively to the fixed contact points (,A and,B). The periphery press portion (,) is provided on the bottom surface at the central end region with a first protrusion (,), the cross sectional end shape of which protrusion being round and making contact to the switch substrate (,). The first protrusion (,) works as a fulcrum separating the functions of center press portion (,) and periphery press portion (,) to be independent to each other. As a result, even when an operating force is given on the operating body (,) at a place somewhat deviating from a right targeted area, the operating force can surely bring only a targeted switch into ON-OFF operation.