Metal working – Method of mechanical manufacture – Electrical device making
Patent
1977-02-14
1979-05-15
Lanham, C. W.
Metal working
Method of mechanical manufacture
Electrical device making
29626, 200 5A, 200159B, H01H 1370
Patent
active
041539877
ABSTRACT:
A method is shown for assembling a calculator keyboard which comprises a plurality of switches on a substrate board where each switch comprises first and second contacts spaced from each other on one side of the board and an electrically conductive actuating element such as a domed metal disk overying the first and second contacts. The method for assembling the keyboard involves arranging a plurality of the disks in position relative to one another (as on a fixture) corresponding to their desired locations on the substrate board and then adhering a sheet of flexible, insulative material to the outer faces of the disks. The sheet with the elements adhered thereto is then transferred to the substrate board and is adhered to one face of the substrate board so that each of the disks is properly positioned relative to its respective contacts and so that the disks are sealed to the substrate board.
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Crosby Gene P.
Haug John A.
Lanham C. W.
McAndrews James P.
Texas Instruments Incorporated
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