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:
Dec. 25, 1990
Filed:
Jan. 16, 1990
Takashi Murakami, Hyogo, JP;
Yoshihiro Hattori, Hyogo, JP;
Mitsubishi Denki Kabiushiki Kaisha, Hyogo, JP;
Abstract
The operating key switch unit according to the present invention includes a plurality of key switch buttons exposed from the front of a waterproof case and a switch panel integrally formed therein using an elastic material and mounted with bolts between the waterproof case and a printed circuit board. Furthermore, a first contactor projecting in the key switch button operating direction annularly in a surrounding relation to the key switch buttons is provided, and a second annular contactor formed integrally with the switch panel and in contact with the first contactor throughout the overall circumference at all times is provided.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile