US3652006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tear open package and tear seam therefor
Assignee: Wyomissing Corp
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Filing: 1970-01-20
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Granted: 1972-03-28
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Expires: 1990-01-20
Abstract
Abstract A tear-open package comprising a flexible packaging material, such as paper, sealed around its periphery but spaced apart near its center to provide a product-receiving cavity, the package having a pleat formed along one edge thereof to provide a pair of adjacent outwardly extending and readily graspable folds. The folds are reinforced by stiffening strips or by adhesive material, except along the fold line between folds, so that when the folds are grasped and pulled apart the package will tear open along the fold line between the reinforced folds.
Inventors
- 👤 Robert J Trewella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:35
CPC Classifications
B; B65; B65D; B65D75/00; B65D75/52; B65D75/58; B65D75/5805; B65D75/04; B65D75/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
In a tear-open package formed of flexible packaging material and having a closed end, the improvement which comprises a pleat formed in said end to provide a pair of adjacent outwardly extending and readily graspable folds, and reinforcing means on each of said pleat folds positioned so as to leave an unreinforced relatively weak and readily tearable portion of said pleat between said reinforcing means only along the fold line between said pleat folds, said reinforcing means comprising a pair of stiffening strips, each stiffening strip being bonded to the exterior of one of said folds, whereby a grasping and pulling apart of said folds will tear open said package along said fold line.
Claim 2
Dependent Claim
114 words
In a tear-open package formed of flexible packaging material and having a closed end, the improvement which comprises a pleat formed in said end to provide a pair of adjacent outwardly extending and readily graspable folds, and reinforcing means on each of said pleat folds positioned so as to leave an unreinforced relatively weak and readily tearable portion of said pleat between said reinforcing means only along the fold line between said pleat folds, said reinforcing means comprising a pair of stiffening strips, each stiffening strip being bonded to the exterior of one of said folds, whereby a grasping and pulling apart of said folds will tear open said package along said fold line.
Claim 3
Dependent Claim
137 words
A tear open package of flexible material, comprising: an integral sheet of said material folded along three adjacent parallel lines to form a pair of opposed main flaps and to form, along the folded edge thereof, an accordian pleat having two adjacent outwardly extending and readily graspable folds; means bonding together said main flaps along the other edges thereof; and reinforcing means on each of said pleat folds positioned so as to leave an unreinforced relatively weak and readily tearable portion of said pleat between said reinforcing means only along the fold line between said pleat folds, said reinforcing means comprising a pair of stiffening strips, each stiffening strip being bonded to the exterior of one of said folds, whereby a grasping and pulling apart of said folds will tear said sheet along said last-named fold line.
Claim 4
Dependent Claim
137 words
A tear open package of flexible material, comprising: an integral sheet of said material folded along three adjacent parallel lines to form a pair of opposed main flaps and to form, along the folded edge thereof, an accordian pleat having two adjacent outwardly extending and readily graspable folds; means bonding together said main flaps along the other edges thereof; and reinforcing means on each of said pleat folds positioned so as to leave an unreinforced relatively weak and readily tearable portion of said pleat between said reinforcing means only along the fold line between said pleat folds, said reinforcing means comprising a pair of stiffening strips, each stiffening strip being bonded to the exterior of one of said folds, whereby a grasping and pulling apart of said folds will tear said sheet along said last-named fold line.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |