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. 08, 1981
Filed:
Sep. 19, 1979
Applicant:
Inventor:
Robert J Mayerjak, Torrington, CT (US);
Assignee:
Currier Piano Company, Inc., Marion, NC (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G10C / ;
U.S. Cl.
CPC ...
84430 ; 84177 ;
Abstract
A key bed for a piano or the like is comprised by a laminated structure having two outer layers of sheet steel and an intermediate layer of a wood product. The steel layers are bonded to the intermediate layer, and the intermediate layer is substantially thicker than the outer layers of steel to offset the outer layers from one another and thereby increase the stiffness of the key bed.