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:
Jul. 28, 2026
Filed:
Mar. 24, 2023
Sony Group Corporation, Tokyo, JP;
SONY GROUP CORPORATION, Tokyo, JP;
Abstract
A key depression amount sensor device () that is installed below keys of a piano, which keys are aligned along a longitudinal axis, and that detects a depression amount of each of the keys, the key depression amount sensor device including: an electronic circuit board () including a plurality of optical sensors that respectively detects the depression amounts of the keys by reflection of light; a housing () that extends along the longitudinal axis and houses the electronic circuit board; a clamp mechanism () that sandwiches an action beam (), which is positioned below the keys, in a longitudinal axis direction; and a connection mechanism () that connects the clamp mechanism and the housing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile