Personal digital assistant with retractable stylus

Details Personal digital assistant with retractable stylus Personal digital assistant with retractable stylus

2005-07-05

2005-07-05

Shalwala, Bipin (Department: 2673)

Computer graphics processing and selective visual display system

Display peripheral interface input device

Stylus

C345S156000, C345S173000, C178S019010, C401S099000, C401S103000, C401S109000, C401S112000, C401S258000

Reexamination Certificate

active

06914596

ABSTRACT:
A Personal Digital Assistant (PDA) with retractable stylus comprises a retractable stylus, a housing, a stylus slot, and a push portion, wherein a contact pad is attached to the inner side of the push portion. The retractable stylus comprises a pen shaft having a release button, a pen body having an opening, and a spring situated inside the pen body. When an external force is applied to the pen shaft downward, the spring is compressed until the opening holding the release button; thus, the stylus is shortened. When the release button is set free from the opening, the spring elasticity ejects the pen shaft upward; thus, the stylus returns to the full-length condition. If the stylus is kept in the stylus slot, an external force applied to the push portion can make the contact pad press the release button; so the pen shaft is ejected upward by spring elasticity.

REFERENCES:
patent: 3749503 (1973-07-01), Duerr
patent: 5330899 (1994-07-01), DeVaughn
patent: 5422442 (1995-06-01), Gouda et al.
patent: 6050735 (2000-04-01), Hazzard
patent: 6250828 (2001-06-01), Liu
patent: 6681333 (2004-01-01), Cho
patent: 85203983 (1986-09-01), None

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