Position indicating device

Details Position indicating device Position indicating device

1989-06-20

1991-04-30

Schreyer, Stafford D.

Telegraphy

Systems

Position coordinate determination for writing

340710, G08C 2100

Patent

active

050120484

ABSTRACT:
A manual position indicating device comprises a body portion (1) that can be moved by hand across a surface; and a support member (4) movably mounted to the body portion. The support member includes a graticule (13) and associated signal generating or detecting circuitry for interaction in use with position determining apparatus, whereby the relative positions of the graticule (13) and the body portion (1) are selected by suitably moving the support member and body portion relatively to one another. A cooperating ball (11) and notch system (10) is provided for locking the support member (4) relative to the body portion (1) in a number of different positions.

REFERENCES:
patent: 4419672 (1983-12-01), Hird
patent: 4550316 (1985-10-01), Whetstone et al.
patent: 4581761 (1986-04-01), Ichinokawa et al.
"Manual Digitizers for CAD", Nancy E. Rouse, Machine Design, Jun. 1985.

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