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:
Sep. 05, 1978
Filed:
Jan. 25, 1977
Yasuhiro Hinago, Hamamatsu, JP;
Abstract
This invention relates to a touch response sensor for an electronic musical instrument capable of producing a signal responsive to a key depressing speed upon depression of a key. In order to produce such a signal from the sensor, the latter comprises two switches which are operated in turn by a single drive piece with a time lag determined by the key depressing speed. The secondarily operated switch may be a switch capable of producing a signal responsive to a key depressing pressure and including a resistant member and a resilient member having a conductive portion facing the resistant member thereby, upon depression of the resilient member through the key, to produce a resistance variation signal responsive to the key depressing pressure.