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:
Sep. 14, 1982
Filed:
Jun. 23, 1980
Applicant:
Inventor:
Erich Loepfe, Pfaffhausen, CH;
Assignee:
Gebrueder Loepfe AG, Zurich, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03K / ;
U.S. Cl.
CPC ...
328138 ; 328140 ; 57352 ;
Abstract
An electronic circuitry for evaluating electrical sensing signals furnished by a sensing device responsive to ballooning motion of a yarn in a textile machine and delivering a series of high frequency pulses having a repetition rate corresponding to the low frequency of the ballooning motion, comprises a series arrangement of an A.C.-amplifier, a rectifier, a low-pass filter having an upper cut-off frequency smaller than said high frequency but greater than the low frequency of the ballooning motion, and a frequency discriminator made up of a high-pass filter and integrator, and a final stage to either indicate improper yarn ballooning or disable the machine operation.