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:
May. 03, 1983
Filed:
Jan. 09, 1981
Harold A Conklin, Jr, Hamilton County, OH (US);
Pieter W van Nuis, Hamilton County, OH (US);
Baldwin Piano & Organ Company, Cincinnati, OH (US);
Abstract
Means for adjusting the touch force required to depress the keys of a piano within the range normally preferred by pianists, comprising a plurality of spring member means having a relatively small spring constant (low stiffness). Each spring member means is connected at one of its ends to one of piano keys near the fulcrum thereof. Each spring member means is connected at its other end to a beam located above the keys and extending transversely thereof the full length of the keyboard. At least one of the connections of each spring member means is adjustable. The beam may be a single continuous member, or it may be made up of segments corresponding to groups of adjacent keys. In the initial adjustment each spring member means is typically prestressed by means of its adjustable connection to set the static touch force of its respective key to the desired value.