Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including row of keys having different heights
Patent
1993-08-20
1995-02-21
Burr, Edgar S.
Typewriting machines
Key-board or key lever-actuating mechanism
Key-board including row of keys having different heights
400490, B41J 516
Patent
active
053910060
ABSTRACT:
This invention relates to ergonomic keycaps that snap on the keys or attach directly to the keyboard of computer keyboards, word processors, electronic typewriters and other data input devices. The ergonomic keycaps are approximately the same length and width as a standard keycap but are a different height. The ergonomic keys will be positioned over the data entry keys of a computer keyboard in a manner that forms an inverted V or a wave shape. The inverted V or wave shape allows the operator's hands to be maintained in a position that should reduce repetitive stress injuries. The snap on ergonomic keycaps may be formed from flexible plastic and are designed to fit snugly onto the standard data entry keys of a keyboard. The caps design will be cup shaped and a sufficient fixation to the keys may be achieved through friction forces, vacuum forces, a combination of friction and vacuum forces, a mechanical attachment or any other suitable means know to those skilled in the industry. While intending the ergonomic keycaps to be affixed strongly to each data entry key of the computer keyboard, in one embodiment, the ergonomic keycaps may not be permanently attached and therefore may be removable.
REFERENCES:
patent: 4012127 (1977-03-01), Bolander
patent: 4483634 (1984-11-01), Frey et al.
patent: 4597681 (1986-07-01), Hodges
patent: 4755072 (1988-07-01), Hoornweg
patent: 5119078 (1992-06-01), Grant
patent: 5160919 (1992-11-01), Mohler et al.
patent: 5183346 (1993-02-01), Tesar
Burr Edgar S.
Nguyen Anthony H.
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