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US Patent: 4,034,477
Digital Electro-Optical Micrometer and Gages
Patentee:
Geza Von Voros (exact or similar names) - Glen Rock, NJ

USPTO Classifications:
33/784, 33/794, 33/DIG.3, D10/73

Tool Categories:
metalworking tools : machinist tools : measuring tools : micrometers

Assignees:
Optograms, Inc. - Oakland, NJ

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Apr. 09, 1976
Granted: Jul. 12, 1977

Patent Pictures:
USPTO (New site tip)
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Report data errors or omissions to steward Joel Havens
Description:
Ralph R. Roberts - patent attorney

Abstract

This invention pertains to an electro-optical digital precision micrometer in which a precision lead screw is carried by the frame in precision bearings mounted in supports in the frame and is carried by and in precise alignment with the movement of the movable anvil. A precision nut such as a ball nut is mounted on this precision screw and is carried by the movable anvil so that as it is moved the lead screw is caused to be rotated in response to the movement of the anvil. A rotatable interrupter disc is carried by and on the end of the lead screw and interrupts a light beam so that electrical pulse signals are fed to an encoder. In this embodiment the linear motion of the movable anvil or member is converted into electrical pulse signals in such a way that both the displacement and the direction of motion can be displayed. A dash pot system is provided in all systems so as to govern or regulate the speed of movement of the movable anvil and associated interrupter disc so that as the lines thereon cut or interrupt the beam of light each line interruption is positively detected by the associated photosensor.

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