|
Date |
Patent Name |
Improvement |
Inventor |
| 1950 |
Diaphragm Unit and Method of Fabricating Same |
Improvement of previous patent. |
Paul H. Bilhuber |
| 1953 |
Diaphragm Unit and Method of Fabricating Same |
Improvement of previous patent. |
Paul H. Bilhuber |
| 1955 |
Grand Piano |
Design for grand piano. |
Walter Dorwin Teague,
Charles A. Jerabek |
| 1959 |
Grand Piano Action With Means for Adjusting the Touch Weight Resistance of the Keys |
Improvement of previous patent. |
Walter Günther |
| 1959 |
Means for Adjusting the Touch of Keys in Pianos and Like Musical Instruments |
Improvement of previous patent. |
Walter Günther |
| 1963 |
Wrestplanks |
Improvement of pinblock. |
Frank H. Walsh |
| 1966 |
Piano Action Bushing Assembly |
Introduction of "permafree" (fluorocarbon resin) bushings. |
Theodore D. Steinway |
| 1976 |
Bushing for Piano Action |
Introduction of elastomeric resin busings. |
Joseph J. Pramberger |
| 1983 |
Bearings for Piano Action Mechanism Employing Bushing Cloth and Method of Fabricating Same |
Invention for manufacturing bearings using "permagree" bushings. |
Walter D. Drasche |
| 1991 |
Grand Pianos |
New design for Steinway's 500,000th grand piano. |
Wendell K. Castle |
| 1992 |
Piano Forte Hammer and Method of Making Same |
Design of hammer felt infused with an acrylic copolymer. |
James M. Lombino |
| 1993 |
Piano Key Covers Formed of Ivory Substitute and Pianos having Same |
Design of special ivory key cover replacement. |
Salvadore J. Calabrese;
Henry A. Scarton;
S. Frank Murray;
Christopher M. Ettles;
Warren C. Kennedy;
Saim Dinc;
Bessem Jlidi;
William Strong |
| 1996 |
Member With Synthetic Surface Replicating a Surface of a Specimen of a Natural Material |
Innovations for using synthetic materials. |
Salvadore J. Calabrese;
Henry A. Scarton;
S. Frank Murray;
Christopher M. Ettles;
Warren C. Kennedy;
Saim Dinc;
Bessem Jlidi;
William Strong |
| 1996 |
Piano Escapement Action |
The design of a knuckle assembly for an escapement action. |
Marvin S. Jones;
Dirk Dickten;
Gary M. Green;
Paul Oleksy;
Gregory R. Sims;
Ludwig Tomescu;
Robert C. Berger |
| 1997 |
Piano Key Leveling |
Design of a way for adjusting key height. |
William S. Youse |
| 1999 |
Piano Escapement Action |
Further design of a knuckle assembly for an escapement action. |
William S. Youse; Marvin S. Jones; Stephan Knupher |
| 2000 |
Piano Sustenudo Assembly |
Innovation on
the sostenuto pedal. |
Marvin S. Jones; Peter M Barna; William S. Youse; Anthony C. Arena; Michael Mohr |
|
Sources (Click to Expand/Collapse)
Ratcliffe, Ronald and Stuart Isacoff. Steinway. San Francisco: Chronicle Books, 2002.
