Pressure-sensitive writing stylus

Details Pressure-sensitive writing stylus Pressure-sensitive writing stylus

1977-08-29

1978-09-05

Myracle, Jerry W.

Measuring and testing

Miscellaneous

401194, G01D 902

Patent

active

041110528

ABSTRACT:
A pressure-sensitive pen for use in a signature verification system is responsive to the handwriting pressure applied by the pen user to develop a signal representative of the pressure. In the preferred form, the pen comprises a cylindrical barrel that houses a ball-point pen cartridge encased within a rigid tubular member. The tubular member is secured by a flange to the lower end of the barrel, and is closed at its upper end. The pressure of the cartridge writing tip on the writing surface causes the upper end of the cartridge to bear against the closed end of the tubular member and cause strain therein. The strain in the tubular member is sensed and translated into a signal representative of the user's handwriting pressure.

REFERENCES:
patent: 3528295 (1970-09-01), Johnson et al.
patent: 3618019 (1971-11-01), Nemirovsky et al.
patent: 3986403 (1976-10-01), Hurd et al.

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