Browse Prior Art Database

Changeable Key Pad Overlay and Key Pad Panel

IP.com Disclosure Number: IPCOM000062145D
Original Publication Date: 1986-Oct-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 2 page(s) / 59K

Publishing Venue

IBM

Related People

Ducasse, KW: AUTHOR [+2]

Abstract

The figure discloses a key pad 1 fixed to a support panel 2 and a changeable key pad overlay 3 that includes legends defining the functions of each of the various keys. The key pad overlay includes locating ridges, such as those identified by reference numeral 4, that cooperate with the key pad panel for accurate two-dimensional location of the overlay. This ensures the alignment of the individual legends to their respective keys, yet permits easy installation, removal or substitution of the overlay. The support panel is recessed only in the key area 5 to obtain maximum key movement, maximum overlay movement, and independent movement of adjacent keys without interference from the overlay.

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Changeable Key Pad Overlay and Key Pad Panel

The figure discloses a key pad 1 fixed to a support panel 2 and a changeable key pad overlay 3 that includes legends defining the functions of each of the various keys. The key pad overlay includes locating ridges, such as those identified by reference numeral 4, that cooperate with the key pad panel for accurate two-dimensional location of the overlay. This ensures the alignment of the individual legends to their respective keys, yet permits easy installation, removal or substitution of the overlay. The support panel is recessed only in the key area 5 to obtain maximum key movement, maximum overlay movement, and independent movement of adjacent keys without interference from the overlay. The overlay is preferably a LEXAN* film which is sufficiently thick to survive a prescribed number of operations, yet sufficiently thin to preserve the tactile feel for the operator. The legends identifying the operation of each key are on the back side of the LEXAN film against the smooth surface of the key. The edges and corners of the keys have a mild radius to eliminate sharp edges that might cut through the LEXAM cover. * Trademark of General Electric Co.

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