Keyboard

Details Keyboard Keyboard

1988-05-19

1989-07-25

Scott, J. R.

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

200293, 235145R, H01H 900, H01H 1370, H05K 710

Patent

active

048516180

ABSTRACT:
A keyboard comprises a base plate carrying contact circuits and provided with a plurality of holes, and a key holding frame integrally provided with key housings for receiving keys, vertically flexible posts for determining the lateral position of the base plate relative to the key holding frame, horizontally flexible posts for determining the lateral position of the base plate relative to the key holding frame in cooperation with the vertically flexible posts, fixed posts for determining the longitudinal position of the base plate relative to the key holding frame, and hooks for determining the vertical position of the base plate relative to the key holding fame and to hold the base plate firmly on the key holding frame. In combining the base plate and the key holding frame together, the base plate is moved in a lateral direction relative to the key holding frame so that the respective edges of the holes engage the corresponding hooks, and the vertically flexible posts are allowed to jump into the corresponding holes, after inserting the fixed posts, the horizontally flexible posts and the hooks in the corresponding holes. Thus, the base plate and the key holding frame can be joined together simply by placing the base plate on the key holding frame and sliding the base plate in a lateral direction relative to the key holding frame, without forcibly straining the component parts.

REFERENCES:
patent: 438430 (1890-10-01), Clerk
patent: 2931108 (1960-04-01), Brown
patent: 4467150 (1984-08-01), Leitermann et al.
patent: 4528428 (1985-07-01), Gotoh et al.
patent: 4560844 (1985-12-01), Takamura et al.
patent: 4773780 (1988-09-01), Hochgesang
IBM Technical Disclosure Bulletin, vol. 20, No. 7, R. H. Harris, Dec. 1977, "Curved Keyboard", pp. 2784-2785.

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