Browse Prior Art Database

Quick Changeable Keytop Indicia

IP.com Disclosure Number: IPCOM000091050D
Original Publication Date: 1969-Sep-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 51K

Publishing Venue

IBM

Related People

Potak, DL: AUTHOR

Abstract

A keyboard to provide changeability for keytops is shown in drawing A. Each key 10 has gear teeth 12 which mesh with adjacent gear teeth. As any key is rotated, all keys rotate to bring indicia 14, contained on each keytop, into view. The key structure shown in drawing B consists of support 16 which is attached to an existing keyboard or forms a part of a switch closing structure. A reflecting or radiant section 18 is formed on top of support 16 to back-illuminate the transparent indicia 14 formed on opaque keytop 20. The latter is formed as part of key 10. The gear teeth on each key 10 are slidable vertically in mesh with adjacent gear teeth. Key 10 can be a master key which is a rotary switch that can define to the using system the particular nomenclature set used.

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Quick Changeable Keytop Indicia

A keyboard to provide changeability for keytops is shown in drawing A. Each key 10 has gear teeth 12 which mesh with adjacent gear teeth. As any key is rotated, all keys rotate to bring indicia 14, contained on each keytop, into view. The key structure shown in drawing B consists of support 16 which is attached to an existing keyboard or forms a part of a switch closing structure. A reflecting or radiant section 18 is formed on top of support 16 to back-illuminate the transparent indicia 14 formed on opaque keytop 20. The latter is formed as part of key 10. The gear teeth on each key 10 are slidable vertically in mesh with adjacent gear teeth. Key 10 can be a master key which is a rotary switch that can define to the using system the particular nomenclature set used. As the master key is rotated to a new position, the rotary switch picks up another switch position to indicate the nomenclature change.

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