Stylus pen

Details Stylus pen Stylus pen

1993-01-26

1994-03-01

Kuntz, Curtis

Telegraphy

Systems

Position coordinate determination for writing

G08C 2100

Patent

active

052909727

ABSTRACT:
A stylus pen for use as a computer input device includes a pen holder with an associated tip, a chamber defined in the pen holder and filled with a non-compressible fluid, a pressure sensor having a pressure receiving surface that detects pressure in the chamber, and a means for converting a mechanical force applied to the tip to a change in pressure of the non-compressible fluid enclosed in the chamber. In the use of the pen a mechanical force applied to the tip changes the pressure of the non-compressible fluid; and this pressure change is detected by the pressure sensor to produce a change in the output signal from the sensor usable as a computer input.

REFERENCES:
patent: 4141073 (1979-02-01), Tan
patent: 4241409 (1980-12-01), Nolf
patent: 4263592 (1981-04-01), Takahashi et al.
patent: 4677428 (1987-06-01), Bartholow
patent: 4705942 (1987-11-01), Budrikis et al.

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