Nova Patents
US2807265A

Pocket for ring binders

Abstract

This record has no abstract on file.

US2807265A, drawing sheet 1
Sheet 1 of 1

Term

Term ended

Expired 24 September 1974, 52 years ago.

  1. Priority and filed
  2. Granted
  3. Expired
  4. Today

2 claims: 2 independent, 0 dependent

  1. 1
    What is claimed is:In a pocket for ring binders comprising in combina65 , n .a.palr equal size flexible superimposed 'sheets of plasticized thermoplastic resin separated by a reinforcing strip of similar material of greater thickness along one edge thereof said reinforcing strip being heat sealed around the . edges thereof to said sheets and the other 70 edg®s,of said sheets being heat sealed together a series of holes at binder ring spacing heat sealed at the edges thereof to said reinforcing strip and said sheets through the edge of said pocket at said reinforcing strip, a rectangular shaped opening in the top one of said sheets adjacent the edge opposite said reinforcing 'strip, said opening being somewhat less in length than the length of said adjacent edge, -a zipper closure having interengaging tooth elements- and an operating slide element Cooperating therewith, said zipper-closure having closed-ends, and being somewhat longer and wider-than the length and width of said opening in said top sheet, said zipper closure being heat sealed -at the sides thereof to the underside of said top sheet along the length of said opening with the ends of said heat seals curving inwardly toward
  2. 2
    2,807,265 each other beyond-the ends of said opening and with the terminations of said heat seals spaced apart over the closed ends of said zipper closure whereby the closed ends of said zipper closure reinforce said opening at the ends thereof. References Cited in the file of this patent UNITED STATES PATENTS Grenier __--------------Nov. 24,1936 Bres------------------Aug. 21, 1951 Brunner_______________W 4, 1954 2,062,001 2,565,167 2,677,376