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:
May. 17, 1977
Filed:
Mar. 18, 1975
Applicant:
Inventor:
Bernard Isoard, Ecully, FR;
Assignee:
Rhone-Poulenc-Textile, Paris, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B / ; B65H / ;
U.S. Cl.
CPC ...
73 377 ; 73160 ; 242 / ;
Abstract
A method and apparatus for sensing the presence or absence of yarns using a simple airflow in an open slot formed between parallel plates, the presence upstream of the proper yarn path being sensed. In one form, the pressure is sensed at multiple points and averaged to accommodate yarn oscillation.