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:
Nov. 28, 1978
Filed:
Sep. 19, 1977
Applicant:
Inventor:
Harold A Conklin, Jr, Cincinnati, OH (US);
Assignee:
D. H. Baldwin Company, Cincinnati, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10C / ;
U.S. Cl.
CPC ...
84423 ; 84432 ; 84434 ; 84439 ;
Abstract
A piano key frame assembly comprising a rigid metal frame, preferably formed from aluminum tubing, for supporting the piano keys and action, the frame having a front rail, an intermediate balance rail and a back rail, the back rail mounting adjustment means for leveling the keys, the key frame having adjustable feet by means of which it is positioned and leveled within the piano case, the conventional key bed being replaced by relatively narrow key bed brackets extending along the opposite sides of the case on which the adjustable feet are supported, means being provided to align and maintain the key frame on the key bed brackets.