Title: Electronic musical instrument keyboard

Abstract: A musical instrument keyboard consisting of a spring metal plate stamped into the shape of a comb with the back of the comb clamped in position and the teeth thereof mounting the keys, characterized by low cost, and including provision for comparable pressure of operation as between the long lever (white) keys and the short lever (black) keys, and requiring no soft side guides or the hardware to mount them.

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Inventors: Schrecongost, Ray B. (Park Ridge, IL, US)
Perutis, Edward J. (Chicago, IL, US)

Application Number: 532427
Filing Date: 1974-12-13
Publication_date: 1977-08-23
Assignee: Hammond Corporation (Chicago, IL)
Primary Class(es): 84/423R 84/434, 84/439
Other Classes:
US Patent Ref:

2562471	Jul, 1951	Martenot	84/423.
2567870	Sep, 1951	Bozak et al.	84/433.
2612812	Oct, 1952	Greenleaf et al.	84/423.
2705346	Apr, 1955	Schlabach et al.	264/249.
2832251	Apr, 1958	Hayslett	84/433.
3308225	Mar, 1967	Wells	264/249.
3480744	Nov, 1969	Yamada	84/433.
3705380	Dec, 1972	Roberts	264/249.
3754319	Aug, 1973	Miori	264/249.

Other Refs: 21,326

Aug, 1970	JA

Primary Examiner: Franklin, Lawrence R.
Assistant Examiner:
Attorney: Neuman, Williams, Anderson & Olson