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US 4,075,465 AGranted
Keyboard overlay
AssigneeSperry Rand Corporation
InventorsBuddy Keith Funk, Elton Earl Tetrick
Life of this patent
Estimating the term…
Abstract
An exchangeable overlay for changing the character representations associated with the keys of a keyboard. The overlay is disposed on the keyboard and has openings to receive each key thereof with the inner portion of each opening above an associated key sloped to form a character bearing surface of easy visibility.
Claims6
A structure for mounting on a keyboard containing a plurality of keys, comprising in combination:
- an overlay disposable on the keyboard and having a plurality of inside surfaces defining openings for each of the keys of the keyboard;
- and
- a portion of at least some of said inside surfaces, which define said openings, being sloped and displaying a symbol associated with respective ones of said keys.
In combination:
- a keyboard comprising a plurality of keys;
- an exchangeable overlay having a like plurality of inside surfaces defining openings to receive said keys of said keyboard;
- and
- a portion of at least some of said inside surfaces, which define said openings, being sloped and displaying a symbol for association with respective ones of said keys.
1 more element
Dependencies are inferred from the claim text.