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US 4,782,734 AGranted
Keyboard keys for larger hands
OwnerErma L. Roseinventor
Life of this patent
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Abstract
An improved keyboard includes the replacement or substitution of the original, conventional flat/sharp or black keys with a more narrower key having a width factor substantially within the range of 0.55 to 0.85 of the width of a standard or original black key such that the players having hands and/or fingers larger than normal may more easily reach the adjacent shank portion of the intermediate white keys.
Claims2
A keyboard for a piano or the like comprising;
- a plurality of adjacent white and black keys each having a planar top surface, said white keys having a full-width front portion joined to a narrower rearmost shank portion, said black keys of a shorter length and disposed intermediate said white key shank portions, vertically disposed side walls on said black keys,
- said white and black keys each including a keybase and defining a minimal spacing therebetween,
- said black keys each having akey bottom comprising a horizontally disposed flange atop its respective keybase and extending laterally from said black key side walls,
- said black key flanges disposed co-planar with said white key shank portions with said keys in a normal at-rest position, and
- said black key top surfaces each defining a width substantially less than that of said top surfaces of said white key shank portions whereby,
- an enlarged lateral spacing is provided between adjacent ones of said black keys to facilitate striking of said white key shank portions therebetween without requiring modification of said key base.
3 more elements
Dependencies are inferred from the claim text.