Rotation detecting apparatus

Details Rotation detecting apparatus Rotation detecting apparatus

1989-02-24

1990-04-10

Cuchlinski, Jr., William A.

Geometrical instruments

Distance measuring

Of length by rolling contact

G01B 702

Patent

active

049148311

ABSTRACT:
A first wheel mechanism and rotation detecting means for detecting rotation of the first wheel mechanism are provided within a casing. A second wheel mechanism for measurement is movable provided at the casing. The second wheel mechanism is located in a non-detecting mode at such a place as not to protrude outside the casing. When moved by a moving member, however, the second wheel mechanism partially protrudes from the casing and the rotation of the second wheel mechanism can be transmitted to the first wheel mechanism, whereby the rotation of the second wheel mechanism can be detected by the rotation detecting means.

REFERENCES:
patent: 2821782 (1958-02-01), Kallweit
patent: 3494039 (1970-02-01), Porter
patent: 3732623 (1973-05-01), Bopst
patent: 3791038 (1974-02-01), Polydoris et al.
patent: 3921301 (1975-11-01), Tuley
patent: 3999298 (1976-12-01), Nishimura
patent: 4163323 (1979-08-01), Bud
patent: 4760647 (1988-08-01), Gillis

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