US Patent: 3,686,766 - Digital Micrometer


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US Patent: 3,686,766

Digital Micrometer

Patentee:

Sakuzo Matumoto (exact or similar names) - Tokyo, Japan

USPTO Classifications:

33/819

Tool Categories:

metalworking tools : machinist tools : measuring tools : micrometers

Assignees:

Olympus Optical Co., Ltd. - Tokyo, Japan

Manufacturer:

Not known to have been produced

Witnesses:

none listed

Patent Dates:
Applied:	Jun. 09, 1970
Granted:	Aug. 29, 1972

Patent Pictures:

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Description:

Otto John Munz - patent attorney

Application filed in Japan 04 Feb 1970.

Abstract

Digital micrometer having an encoder rotor and an encoder stator. The encoder stator is fixedly secured to the micrometer which the encoded rotor is rotatably mounted in the micrometer but is prevented from moving axially so as to cooperate with the stator. The rotation of the rotor is correlated to the axial movement of a lead screw for the measurement through a thimble so that the measured value is obtained by the cooperation of the rotor with the stator.