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:
Jan. 04, 1977
Filed:
Jun. 18, 1975
Wilford Rayburn Schreier, Bensenville, IL (US);
Hammond Corporation, Chicago, IL (US);
Abstract
A one key chording system for an electronic keyboard instrument of the type in which a single contact keyboard for DC keying of tone signals is employed. A primary keying signal from the single contact keyboard operates one of a plurality of chord gates to produce a chord keying signal which is translated by one of a set of chord logic units into secondary keying signals. The primary and secondary keying signals operate keyers for tone signals corresponding to a musical chord. An inhibit circuit prevents chord gates from responding to secondary keying signals. A mode control circuit switches the single key chording system off to return the instrument to normal operation with multiple key chording.