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. 12, 1998
Filed:
Mar. 18, 1996
William D Ellsworth, Fairport, NY (US);
David Z Dike, Port Gibson, NY (US);
David I Laber, Victor, NY (US);
Proven Designs, Inc., Palmyra, NY (US);
Abstract
In a bag making machine the longitudinal side edges and adjacent portions of an elongate plastic web, which is folded in half medially of its centerline, pass from a set of inlet rolls over and under, respectively, a pair of vertically spaced separating rolls before merging at a set of outlet rolls. The separating arms extend inwardly between the two separated portions of the web only part way toward the fold line, and are spaced apart exactly twice the depth of the gusset that is to be formed. The remaining portions of the web, which are bisected by the folded line, are disposed in a vertical plane transverse to the separating arms, and upon traveling from the arms to the outlet rolls are folded inwardly between the merging portions of the web by the inner, pointed end of a triangularly shaped plow, which engages and progressively urges the fold line inwardly to the desired gusset depth The separating arms are vertically adjustable relative to each other; and the plow is adjustable transversely of the fold line of the web selectively to adjust the depth of the gusset.