The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 22, 1981
Filed:
Nov. 26, 1979
Applicant:
Inventors:
Karl Lapp, Zurich, CH;
Hansruedi Stutz, Dietlikon, CH;
Assignee:
Gebruder Loepfe AG, Zurich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01B / ; G01B / ;
U.S. Cl.
CPC ...
356385 ; 356429 ;
Abstract
A device for measuring the instantaneous value of the diameter or other transverse dimension of a traveling yarn comprises a linear array of photoelectric sensors and an electronic measuring device for digitally processing the electric signals furnished by the sensors in parallel form. A ground signal is taken with no yarn present and stored in the measuring device, and a measuring signal is taken with yarn present. The measuring device comprises logic circuitry for subtracting the stored ground signal from the measuring signal such as to eliminate the ground signal and to furnish a pure yarn signal representative of the yarn diameter.