Method for assembling keyboard

Claim 1

The method of assembling a keyboard system for an electronic pocket calculator or the like, the keyboard system having an insulative substrate board and a plurality of switches arranged on one face of the board, each switch comprising a pair of spaced contacts on the board and a resilient deformable actuating element positioned to be selectively deformed to engage both of its respective contacts to thus complete a circuit therebetween, said method comprising the steps of: arranging a plurality of said actuating elements at a first station in position relative to one another corresponding to the desired locations of said elements on said substrate board; adhering a sheet of flexible insulative material to the outer faces of said elements at said first station for securing the elements in said position relative to each other; transferring the sheet with the elements adhered to the sheet and retained in position relative to each other by the flexible sheet to said substrate board at a second station; and adhering said flexible sheet to said one face of said substrate board at said second station so as to secure each of said elements to said board in proper position relative to its respective contacts to be adapted to be selectively deformed for completing a circuit between the contacts and to seal the elements to the board.

Claim 2

The method of assembling a keyboard system for an electronic pocket calculator or the like, the keyboard system having an insulative substrate board and a plurality of switches arranged on one face of the board, each switch comprising a pair of spaced contacts on the board and a resilient deformable actuating element positioned to be selectively deformed to engage both of its respective contacts to thus complete a circuit therebetween, said method comprising the steps of: arranging a plurality of said actuating elements at a first station in position relative to one another corresponding to the desired locations of said elements on said substrate board; adhering a sheet of flexible insulative material to the outer faces of said elements at said first station for securing the elements in said position relative to each other; transferring the sheet with the elements adhered to the sheet and retained in position relative to each other by the flexible sheet to said substrate board at a second station; and adhering said flexible sheet to said one face of said substrate board at said second station so as to secure each of said elements to said board in proper position relative to its respective contacts to be adapted to be selectively deformed for completing a circuit between the contacts and to seal the elements to the board.