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.

Date of Patent:
Jan. 27, 1987

Filed:

Jan. 24, 1986
Applicant:
Inventor:

Sisir K Sen Gupta, Meadville, PA (US);

Assignee:

Talon, Inc., Meadville, PA (US);

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B21D / ; A41H / ;
U.S. Cl.
CPC ...
29766 ; 29 332 ;
Abstract

Fabric flypieces are placed randomly on a top plate of a unified flypiece feed apparatus which orients the flypieces and feeds them in succession to a sewing station at which they are united with a zipper chain either in end-to-end abutment or with a slight predetermined gap between the flypieces. A somewhat angled flypiece belt conveyor and a cooperative variable tension drag device above the conveyor orients the flypieces longitudinally and feeds them to the sewing station at a substantially greater speed than the united flypieces and zipper chain leave the sewing station. A photo-optical device senses the presence or absence of flypieces on the top plate and stops the sewing machine if the operator fails to load a flypiece within a predetermined time interval.


Find Patent Forward Citations

Sen Gupta, Sisir. (1987). Semi-automatic apparatus for attaching flypieces to a slide fastener (U.S. Patent No. 4638557). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4638557

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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