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US3774837A Expired / Lapsed US ⏱️ 0.0 years remaining

Carrying bag provided with a handle

Assignee: Munksjoe AB
•
Filing: 1970-07-01
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Granted: 1973-11-27
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Expires: 1990-07-01
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Abstract

Abstract The carrier bag is of the type having two wide sides and a folded bottom and it is manufactured from a tubular synthetic resin web. At the open end the bag is provided with reinforcing folds or reinforcing strips extending transversely of the bag. Grip openings are punched out in the centre of the opening edge. The reinforcing folds or strips are welded to the wide sides of the bag by means of weld seams extending obliquely towards the opening edge, one on either side of the grip opening, and across the entire width of the folds or strips. The carrying grips are thus formed by the centre part of the reinforcing folds or strips between the two inclined weld seams. Consequently stresses on the handle are uniformly distributed on the four weld seams, in that each weld seam need only absorb a quarter of the load of the goods in the bag. The machine for manufacturing the carrier bag comprises folding elements in the shape of folder rails for providing the reinforcing folds, or an automatic welding apparatus for securing the reinforcing strips to the bag. It also comprises a puncher for cutting out the grip openings and a welding device for producing the oblique weld seams on the folds or strips. The machine also includes a means for slitting open the tubular synthetic resin web in the longitudinal direction thereof. The invention also includes a method for the manufacture of the carrier bag.

Inventors

  • 👤 O Franson

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 14:58
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/06; B65D33/10; B65D33/02; B65D33/065; B31; B31B; B31B70/00; B31B70/74; B31B70/86; B31B70/876; Y; Y10; Y10S; Y10S383/00; Y10S383/903

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 220 words
An improved carrier bag consisting of a weldable synthetic resin material forming said bag with a closed bottom and an open top, grip strip means provided on said bag at the opened top thereof, first and second spaced weld seam sections connecting said grip strip means and said bag, each of said first and second weld seam sections being inclined toward the open top of said bag, third and fourth spaced weld seam sections connecting said grip strip means and said bag, each of said third and fourth weld seam sections being inclined toward the open top of said bag, first finger passage means between said first and second weld seam sections, second finger passage means between said third and fourth weld seam sections, each finger passage means being formed by a substantially parallel trapezoidal recess in the carrier bag, the one parallel side of the recess being substantially flush with a top of said bag and the second parallel side of the recess being located below said grip strip means, said finger passages providing an opening between said grip strip means and said bag bottom whereby the fingers of a user can pass therethrough to hold said grip strip means, and each of said first, second, third and fourth weld seams being substantially equally distant from adjacent weld seams.
Claim 2
Dependent Claim 220 words
An improved carrier bag consisting of a weldable synthetic resin material forming said bag with a closed bottom and an open top, grip strip means provided on said bag at the opened top thereof, first and second spaced weld seam sections connecting said grip strip means and said bag, each of said first and second weld seam sections being inclined toward the open top of said bag, third and fourth spaced weld seam sections connecting said grip strip means and said bag, each of said third and fourth weld seam sections being inclined toward the open top of said bag, first finger passage means between said first and second weld seam sections, second finger passage means between said third and fourth weld seam sections, each finger passage means being formed by a substantially parallel trapezoidal recess in the carrier bag, the one parallel side of the recess being substantially flush with a top of said bag and the second parallel side of the recess being located below said grip strip means, said finger passages providing an opening between said grip strip means and said bag bottom whereby the fingers of a user can pass therethrough to hold said grip strip means, and each of said first, second, third and fourth weld seams being substantially equally distant from adjacent weld seams.
Claim 3
Dependent Claim 115 words
A carrying bag with a handle and comprising a weldable plastic material, the opening border of the bag provided with a number of reinforcing folds formed by a folding at the top of the wide sides of the bag, said reinforcing folds being attached to both sides of the wide sides of said bag by means of first and second welds and extending over the width of the folds and converging towards the opening border by extending obliquely, and holes serving as handle openings arranged at the opening border between the ends of the oblique welds and spaced therefrom and thereby that the same divide the opening border in four portions of essentially equal size.
Claim 4
Dependent Claim 115 words
A carrying bag with a handle and comprising a weldable plastic material, the opening border of the bag provided with a number of reinforcing folds formed by a folding at the top of the wide sides of the bag, said reinforcing folds being attached to both sides of the wide sides of said bag by means of first and second welds and extending over the width of the folds and converging towards the opening border by extending obliquely, and holes serving as handle openings arranged at the opening border between the ends of the oblique welds and spaced therefrom and thereby that the same divide the opening border in four portions of essentially equal size.
Claim 5
Dependent Claim 55 words
A carrying bag in accordance with claim 2 in that each handle opening comprises a punched hole of essentially parallel trapezoidal shape in the wide sides of the bag, one of the parallel sides of the punched hole substantially coinciding with the opening border and the other parallel side being situated below the reinforcing folds.

References Cited (Backward Citations)

DK109119A Cited
GB1149673A Cited
GB1150368A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1976-11-26 1977-05-28 1977-11-27 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1980-11-26 1981-05-28 1981-11-27 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1984-11-26 1985-05-28 1985-11-27 $7700.00 Window Closed / Lapsed

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