Keyboard switch assembly having foldable printed circuit board,

Details Keyboard switch assembly having foldable printed circuit board, Keyboard switch assembly having foldable printed circuit board,

1976-07-01

1978-01-03

Scott, James R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200 86R, 200159B, 200292, 200306, 200340, 361398, H01H 900, H01H 1302

Patent

active

040668517

ABSTRACT:
Keyboard construction using a sheet of flexible and resilient non-conductive material preferably non-conductive plastic which is preformed in a predetermined manner for supporting both contact means and contactor means and which is adapted to be folded so that the contact and contactor means are positionable in spaced apart alignment whereby upon depression electrical contact may be made between said contact means and said contactor means.

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patent: 4028509 (1977-06-01), Zurcher
IBM Tech. Disc. Bull., Lester et al, "Switch", vol. 11, No. 11, Apr., 1969, p. 1569.
IBM Tech. Disc. Bull., Harris, "Fold Switch", vol. 19, No. 10, Mar., 1977, pp. 3815, 3816.
IBM Tech. Disc. Bull, R. K. Hayes et al; "Snap Action Membrane Switch Keyboard", vol. 7, No. 12, May, 1965, p. 1168.

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