Computer graphics processing and selective visual display system – Display peripheral interface input device – Stylus
Reexamination Certificate
2005-10-24
2008-10-14
Hjerpe, Richard (Department: 2629)
Computer graphics processing and selective visual display system
Display peripheral interface input device
Stylus
C345S173000, C178S018010
Reexamination Certificate
active
07436397
ABSTRACT:
A touchpad stylus includes a housing, a stylus member axially moveable in the housing, and an energy-absorbing cushion member interposed between a rear extremity of the stylus member and an internal cavity of the housing, the cushion member lightly forwardly biasing the stylus member relative to the housing. The stylus member has a smoothly spherical tip extremity, and the device avoids impact damage to fragile outer membranes of existing touchpad devices because the full mass of the housing is isolated from impact with the touchpad, the stylus member itself having very significantly less mass than an aggregate mass of the complete assembly.
REFERENCES:
patent: 5571997 (1996-11-01), Gray et al.
patent: 6972754 (2005-12-01), Zank
Anderson Denton L.
Hjerpe Richard
Said Mansour M
Sheldon Mak Rose & Anderson PC
Topaz Systems, Inc.
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