Title: Device for monitoring the travel of a yarn like structure utilizing the frictional electricity involved with said travel

Abstract: The present invention relates to monitoring devices of the type making use of the principle that frictional contact between two bodies gives rise to electrical charges or voltages on the bodies. The monitoring device of the invention comprises yarn guiding means, at least one signal electrode and at least one ground electrode. Means are provided for generating yarn travel signals exhibiting improved continuity and a high signal-to-noise ratio.

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Inventors: Domig, Rene (Kusnacht, CH)
Weidmann, Erich (Kleinandelfingen, CH)

Application Number: 632104
Filing Date: 1975-11-14
Publication_date: 1977-05-31
Assignee: Aktiengesellschaft Gebruder Loepfe (Wetzikon, CH)
Primary Class(es): 324/454 28/187, 57/81, 73/160, 226/11, 226/45, 242/157R
Other Classes:
US Patent Ref:

3037162	May, 1962	Jones et al.	324/54.
3676769	Jul, 1972	Loepfe	324/32.

Other Refs: 906,237

Sep, 1962	UK

Primary Examiner: Strecker, Gerard R.
Assistant Examiner:
Attorney: Kleeman; Werner W.