Browse Prior Art Database

Non Mechanical Keyboard

IP.com Disclosure Number: IPCOM000096399D
Original Publication Date: 1963-May-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 42K

Publishing Venue

IBM

Related People

Sharp, JJ: AUTHOR

Abstract

The keyboard has a diaphragm (A) of resilient conductive material such as steel, brass, phosphor-bronze or silver-coated nylon. The diaphragm has a mesh of square indentations 2 integral with the diaphragm and surrounded by corrugated portions of the diaphragm. The diaphragm is supported on an insulating support mesh 3 over an insulating baseboard 4.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Non Mechanical Keyboard

The keyboard has a diaphragm (A) of resilient conductive material such as steel, brass, phosphor-bronze or silver-coated nylon. The diaphragm has a mesh of square indentations 2 integral with the diaphragm and surrounded by corrugated portions of the diaphragm. The diaphragm is supported on an insulating support mesh 3 over an insulating baseboard 4.

Below each indentation and spaced from it by approximately 0. 002 inches is a conductor 5 printed on the baseboard. The diaphragm, mesh and baseboard are sealed together and access to the interior is through a filter and desiccator, not shown. Each conductor is connected to a separate terminal outside the sealed keyboard and connected to a separate input of a coded array (B).

In use, a finger 6 is used to depress an indentation 2 and thus to ground the conductor 5 below it. This sets up a unique coded output from the array (B).

1

Page 2 of 2

2

[This page contains 3 pictures or other non-text objects]