Typewriting machines – Key-board or key lever-actuating mechanism – Including mechanism for activating keys
Patent
1998-05-11
1999-10-26
Burr, Edgar
Typewriting machines
Key-board or key lever-actuating mechanism
Including mechanism for activating keys
400 82, 84425, 84744, G10C 312
Patent
active
059716355
ABSTRACT:
The present invention is a piano-style attachment apparatus for a computer keyboard comprising a base, a plurality of piano-styled keys hinged to said base, and anchors for anchoring the apparatus over the computer keyboard. Each piano-styled key has a protrusion extending downwardly for striking a corresponding computer key. The anchors comprise walls which extend deep in between computer keys in order to secure the apparatus to the computer keyboard.
REFERENCES:
patent: 4158130 (1979-06-01), Speraw et al.
patent: 4297044 (1981-10-01), Hornberg et al.
patent: 4352313 (1982-10-01), Ny
patent: 4704940 (1987-11-01), Cummings
Burr Edgar
Grohusky Leslie J.
Music Sales Corporation
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