Keyboard keys using marked elastic domes and fabrication...

Details Keyboard keys using marked elastic domes and fabrication... Keyboard keys using marked elastic domes and fabrication...

2006-08-01

2006-08-01

Hirshfeld, Andrew H. (Department: 2854)

Typewriting machines

Key-board or key lever-actuating mechanism

Key-cap or key-stem structure

C400S493000, C400S494000, C264S219000

Reexamination Certificate

active

07083343

ABSTRACT:
Keyboard keys using a marked elastic dome and the fabrication method thereof. The method for fabricating elastic domes first includes providing a mold having a plurality of mold cavities with a markable surface. Next, a plurality of different marks is formed on the markable surface of each of the mold cavities. An elastic membrane with a plurality of marked elastic domes is formed by the mold. The marks on the elastic domes represent the position with respect to the mold cavities on the mold and the parameters of fabricating the elastic membrane. Finally, the marked elastic domes are separated from the elastic membrane and used in keys of a keyboard.

REFERENCES:
patent: 4039068 (1977-08-01), Giorza et al.
patent: 4525044 (1985-06-01), Bauman
patent: 5467149 (1995-11-01), Morrison et al.
patent: 5641437 (1997-06-01), Williams et al.
patent: 5898145 (1999-04-01), Su
patent: 6024448 (2000-02-01), Wu et al.
patent: 6203156 (2001-03-01), Wu et al.
patent: 2002/0195732 (2002-12-01), Clark et al.

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