Optics: measuring and testing – By configuration comparison – With relatively movable optical grids
Patent
1977-05-16
1979-01-30
Cobin, John K.
Optics: measuring and testing
By configuration comparison
With relatively movable optical grids
33125C, 250237G, G01D 1124
Patent
active
041369580
ABSTRACT:
An encapsulated measuring apparatus including a hollow body provided with a longitudinal aperture, a measuring scale and a scanning assembly positioned within the hollow body, connecting means for attaching the scanning assembly to a mounting, and sealing means for the aperture extending from walls of the hollow body and positioned so that the surfaces of the sealing means which contact the connecting means are lower than inner surfaces of the hollow body whereby penetrating liquids flow freely from the hollow body.
REFERENCES:
patent: RE29281 (1977-06-01), Burns et al.
patent: 3533703 (1970-10-01), Wingate
patent: 4031595 (1977-06-01), Welker
Cobin John K.
Dr. Johannes Heidenhain GmbH
Rosenberger R. A.
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