Recorders – Combined with external recorder operating means – Well logging
Patent
1976-05-28
1978-01-17
Hartary, Joseph W.
Recorders
Combined with external recorder operating means
Well logging
346 33A, 346137, 346165, 356237, 358128, G01D 539
Patent
active
040694844
ABSTRACT:
High speed writing apparatus, for mapping 1:1 polar plots of disc record defect locations on disc-shaped electrosensitive paper, accepts electrical signals representing defect occurrences from a defect detector which scans the disc record surface in a spiral scanning pattern. These signals activate a high voltage switch circuit that produces an electric current between an electric writing pen stylus and a conducting surface of a turntable of the printing apparatus upon which the disc shaped electrosensitive paper is mounted. Relative motion is established between the turntable and the writing pen in a manner causing markings resulting from pen activations to be located on the electrosensitive paper with radial and circumferential positions corresponding to the locations of the defects appearing on the disc record, thereby generating 1:1 polar plots of the defect locations on the paper. The writing pen scans the paper disc surface in a spiral scanning pattern in synchronization with the defect detector scanning of the disc record. The writing pen is a multistylus pen used in a balanced configuration to effect high speed marking of defect locations without causing damage to the paper.
REFERENCES:
patent: 2052383 (1936-08-01), Cooley
patent: 3429991 (1969-02-01), Ortlieb
patent: 3434149 (1969-03-01), Brousseau
patent: 3909138 (1975-09-01), George
Firester Arthur Herbert
Walentine Joseph Paul
Garrana Henry N.
Hartary Joseph W.
Meagher William H.
RCA Corporation
Whitacre Eugene M.
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