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:
Feb. 08, 1983
Filed:
Aug. 15, 1980
Wilhelm Hutter, Roggwil, CH;
Aktiengesellschaft Adolph Saurer, Arbon, CH;
Abstract
An electrical warp thread-monitoring apparatus for a loom wherein a multiplicity of warp threads each carry a drop wire which, in the presence of thread rupture, connects a pair of current rails which are mutually electrically insulated from one another, and thus, closes an alternating-current circuit. The alternating-current circuit possesses at its input side an alternating-current voltage source which can be connected by means of a bridge rectifier with the current rails. This bridge rectifier or rectifier circuit forms the input of a voltage-dependent pulse converter following which there is connected in circuit a RC-integration stage and a threshold value-switching stage, which also then produce a shutdown or stop signal when the contact locations are contaminated and prevent generation of a shutdown or stop signal when contaminants, leakage currents and dancing drop wires produce short pulses.