Music – Instruments – General features
Reexamination Certificate
2009-03-11
2011-11-01
Lockett, Kimberly R (Department: 2832)
Music
Instruments
General features
C084S433000
Reexamination Certificate
active
08049090
ABSTRACT:
New parameters (Down Force, Up Force, Balance Force, and Average Friction) are defined for evaluating important “stroke characteristics” of individual key actions of one or more pianos or keyboards, describing exactly how these parameters are to be tested, measured and determined. The new parameters are designed to replace the prior art parameters of Down Weight, Up Weight, Balance Weight and Friction. Various methods, means and apparatus are disclosed for accurately testing, measuring and determining these new parameters, with the capability of performing thousands of measurements—on thousands of different key mechanisms—in a short amount of time.
REFERENCES:
patent: 2009/0282962 (2009-11-01), Jones et al.
Gillespie, Brent, Dynamical Modeling of the Grand Piano Action, Proceedings of the International Computer Music Conference (San Jose, California), Oct. 1992, pp. 77-80, ICMA, Inc., San Francisco, California (also published as: Stanford University Department of Music Technical Report STAN-M-80, Stanford University, Oct. 1992).
Hickman, Clarence, Description of the New Piano Action, Ampico Research Laboratory, circa 1929, (reprinted from Mechanical Music Digest Compilation, copyright 1995-2008 by Jody Kravitz; http://www.mmdigest.com/Tech/HickmanAction/description.html).
Hirschkorn, Martin C., Dynamic Model of a Piano Action Mechanism, 2004, University of Waterloo, Waterloo, Ontario, Canada.
The Leveler Company, QuicKey Leveler (flyer), 2007-2008, The Leveler Company, Naperville, IL.
The Leveler Company, Regulate Like a Concert Technician, 2009, www.levelwithme.net/gpage6.html, The Leveler Company, Naperville, IL.
“Pin joint for the Hickman grand piano action, from Nelson Barden's 1969 interview with Dr. Hickman, Also reproduced in book “The Ampico Reproducing Piano” ed. By Richard J. Howe, publ. by MBSI 1987, p. 92” (reprinted from Mechanical Music Digest Compilation copyright 1995-2008 by Jody Kravitz; http://www.mmdigest.com/Tech/ HickmanAction/pinjoint.html).
Suzuki, Hideo and Nakamura, Isao, Acoustics of Pianos, Applied Acoustics, 1990, pp. 147-205, vol. 30, Great Britain (excerpt pp. 147, 155-7).
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