Music – Instruments – General features
Patent
1993-04-01
1995-11-28
Shoop, Jr., William M.
Music
Instruments
General features
G10C 312
Patent
active
054697727
ABSTRACT:
A keyboard for use in a musical instrument or other application includes a key incorporating two guide pins extending downward from directly underneath the key. The front guide pin passes through two bushings, the rear guide pin passes through one bushing. Various preferred embodiments are disclosed including: Application to a Janko musical keyboard with independent keys and MIDI functions; A combination return spring and motion sensor; a swing arm return spring and contact spring mechanism; and a method of bundling together multiple frame members to hold multiple key rows with enhanced rigidity.
REFERENCES:
patent: 360255 (1887-03-01), Von Janko
patent: 2675728 (1954-04-01), Jewett
patent: 2675729 (1954-04-01), Jewett
patent: 3468209 (1969-09-01), Barreto
patent: 3478857 (1969-11-01), Linker
patent: 3738216 (1973-06-01), Slaats et al.
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patent: 4476769 (1984-10-01), Kumano
patent: 4626639 (1986-12-01), Bradford
patent: 4827243 (1989-05-01), Cheng
patent: 5185490 (1993-02-01), Vandervoort
Donels Jeffrey W.
Shoop Jr. William M.
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