Typewriting machines – Key-board or key lever-actuating mechanism – Key-board including keys grouped to facilitate positioning...
Reexamination Certificate
2007-01-16
2007-01-16
Colilla, Daniel J. (Department: 2854)
Typewriting machines
Key-board or key lever-actuating mechanism
Key-board including keys grouped to facilitate positioning...
C400S472000
Reexamination Certificate
active
10945908
ABSTRACT:
A keyboard augmenting hot key structure consisting of a main keyboard having expansion keyboards disposed at its lateral ends, the expansion keyboards each situated on a preloaded torque spring in the main keyboard internal section. A drive structure maintains the expansion keyboards within the main keyboard internal section such that when the expansion keyboards are not utilized, they are concealed within the internal section of the main keyboard. When the expansion keyboards are utilized, the operation of the drive structure torque springs impels the expansion keyboards outward from the main keyboard such that given the unchanged, overall keyboard physical size, there is usable space for accommodating numerous hot keys, providing the users to collect the expansion keyboards at will and without occupying space when the expansion keyboards are not utilized.
REFERENCES:
patent: 5733056 (1998-03-01), Meagher
patent: 6707664 (2004-03-01), Murphy
patent: 2005/0168446 (2005-08-01), Majdoub
patent: 2003167662 (2003-06-01), None
patent: 2003316494 (2003-11-01), None
Machine translation of JP 2003-167662 to Watanabe et al. from Japanese Patent Office website.
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