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. 26, 1987
Filed:
Feb. 11, 1986
Keisuke Watanabe, Shizuoka, JP;
Toshiyuki Iwamoto, Shizuoka, JP;
Nippon Gakki Seizo Kabushiki Kaisha, Hamamatsu, JP;
Abstract
A keyboard switch apparatus for an electronic musical instrument has first and second switches each constituted by stationary and movable contacts. The stationary contacts of the first and second switches are formed adjacent to each other on a single board. The movable contacts of the first and second switches are mounted on a single flexible member arranged above the single board and are normally spaced apart from the stationary contacts at positions opposite thereto. The flexible member and the movable contacts of the first and second switches are integrally formed to have a uniform cross-sectional shape along one direction. The flexible member is deformed in response to the depression of a key. The stationary contacts corresponding to the movable contacts of the first and second switches are closed with a time difference according to a speed of key depression.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile