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:
Sep. 09, 1997
Filed:
Mar. 21, 1996
Applicant:
Inventors:
Charles E Mulcahey, Beverly, MA (US);
Michael R Porter, Topsfield, MA (US);
Assignee:
Porter Sewing Machines, Inc., Beverly, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D05B / ; D05B / ;
U.S. Cl.
CPC ...
112-21 ; 112153 ; 112163 ; 112277 ; 11247005 ; 11247506 ;
Abstract
A method and apparatus for forming a side panel for a mattress sack or a box spring enclosure. The apparatus includes a double needle sewing machine and a guide for the ends of the folded side panel which are being stitched together which aligns and guides the ends through the stitching area. Photocells are provided to start and stop the stitching process. The method includes the step of stopping the stitching process after a predetermined number of stitches if light from a second photocell in the feed direction is not interrupted within a predetermined number of stitches.