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:
Oct. 28, 1997
Filed:
Mar. 21, 1996
Mauro Premi, Brescia, IT;
Mesdan S.p.A., Brescia, IT;
Abstract
A pneumatic thread or yarn knotless joining apparatus for installation on the winding positions of an automatic bobbin winding machine is provided with its own reversible electric stepping motor to cause stepwise rotation of the group of controlling drum cams firstly in an outward direction starting from a starting position and then in the return direction for controlling the synchronized movements of the various movable members. This cam group includes a cam of progressively increasing contour, preferably of stepped shape, for controlling the movement of the levers which withdraw the pretreated thread or yarn ends from the preparation members in the direction of the splicing chamber so as to be able to regulate, by choice of the number of advancement steps set, and hence the point reached on the contour of the cam, the extent of movement of the withdrawal levers from their rest position and hence the desired length by which the thread or yarn ends are superposed upon feeding into the splicing chamber the compressed air jet for making the knotless joint.