Geometrical instruments – Area integrators – Electrical
Patent
1982-04-27
1984-12-04
Haroian, Harry N.
Geometrical instruments
Area integrators
Electrical
33170, 33163, G01B 318
Patent
active
044855567
ABSTRACT:
A spindle driving mechanism includes a spiral groove having a comparatively large pitch for transferring a spindle and an engageable portion to be engaged with this spiral groove. The spindle is provided with a rotation preventing device, and an indicator is driven by an axial movement of the spindle.
REFERENCES:
patent: 672622 (1901-04-01), Isherwood
patent: 2481078 (1949-09-01), Burwood
Mizuno Ichiro
Nakahara Masao
Sakata Hideo
Haroian Harry N.
Mitutoyo Mfg. Co. Ltd.
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