US4115909A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reinforcing insert for collapsible packages
Assignee: Individual
•
Filing: 1977-11-21
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Granted: 1978-09-26
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Expires: 1997-11-21
Abstract
Abstract A cardboard insert for reinforcing collapsible packages, such as see-through plastic bags, is formed from a onepiece blank in which a number of panels are separated by score lines. The panels are sized and shaped to define the desired form, generally a right paralleliped, and the mating edges of the insert blank are pre-slit - and alternate tabs bent inward to form interlocking fingers. The interleaved projecting tabs define a locked seam which is, additionally, reinforced by the adjoining inward-bent tabs. The seam is formed by bending the several panels along the score lines to form the finished shape of the insert, and interleaving the projecting tabs of the free edges.
Inventors
- 👤 Arthur P. Corella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:44
CPC Classifications
B; B65; B65F; B65F1/00; B65F1/14; B65F1/141; B65F1/1415; B65D; B65D33/00; B65D33/02; Y; Y10; Y10S; Y10S493/00; Y10S493/916; Y10S493/924; Y10T; Y10T428/00; Y10T428/19
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
154 words
A reinforcing insert for flexible packaging, formed from a single blank, comprising: a plurality of facets, each corresponding to a panel in said blank; a plurality of fold lines, each corresponding to a score line in said blank for defining said panels; and a plurality of alternating projecting tabs and intervening spaces in each of matable edges of at least two of said facets, said tabs being substantially straight and substantially rectangular and said spaces being substantially rectangular, said tabs and spaces being so conformed that the tabs in one of said matable edges substantially dimensionally correspond to the spaces in the other of said matable edges, said projecting tabs in the matable edges being interleaved to form a seam, with each of the projecting tabs forming said seam being substantially unbent and substantially in the same plane as its adjoining facet and the outer ends of the projecting, unbent tabs demarcating said seam.
Claim 2
Dependent Claim
154 words
A reinforcing insert for flexible packaging, formed from a single blank, comprising: a plurality of facets, each corresponding to a panel in said blank; a plurality of fold lines, each corresponding to a score line in said blank for defining said panels; and a plurality of alternating projecting tabs and intervening spaces in each of matable edges of at least two of said facets, said tabs being substantially straight and substantially rectangular and said spaces being substantially rectangular, said tabs and spaces being so conformed that the tabs in one of said matable edges substantially dimensionally correspond to the spaces in the other of said matable edges, said projecting tabs in the matable edges being interleaved to form a seam, with each of the projecting tabs forming said seam being substantially unbent and substantially in the same plane as its adjoining facet and the outer ends of the projecting, unbent tabs demarcating said seam.
Claim 3
Dependent Claim
14 words
The insert of claim 1, wherein said insert is formed from semi-rigid sheet material.
Claim 4
Dependent Claim
11 words
The insert of claim 2, wherein said sheet material is paperboard.
Claim 5
Dependent Claim
14 words
The insert of claim 1, wherein said plurality of facets define a regular polyhedron.
Claim 6
Dependent Claim
17 words
The insert of claim 4, wherein said polyhedron is selected from facets defined by parallel fold lines.
Claim 7
Dependent Claim
12 words
The insert of claim 5, wherein said polyhedron is a right paralleliped.
Claim 8
Dependent Claim
12 words
The insert of claim 5, wherein said polyhedron is a triangular prism.
Claim 9
Dependent Claim
32 words
The insert of claim 1, wherein said projecting tabs in the matable edges are formed by parallel, spaced slits in said edges, with said slits being at right angles to the edges.
Claim 10
Dependent Claim
22 words
The insert of claim 8, wherein the material intervening between said projecting tabs is bent away from the plane of said facet.
Claim 11
Dependent Claim
20 words
The insert of claim 9, wherein said intervening materials is bent inwardly with respect to the outline of said insert.
Claim 12
Dependent Claim
24 words
The insert of claim 9, wherein the material intervening between said projecting tabs is bent outwardly with respect to the outline of said insert.
Claim 13
Independent Claim
178 words
A method for producing reinforcing inserts for flexible packaging from a sheet of cardboard or the like, comprising the steps of: developing on the surface of said sheet the outline for a plurality of facets defining said insert; cutting the developed outline from the sheet, and scoring fold lines thereon for defining said facets; slitting each of matable edges of at least two outboard facets of the insert, to define laterally projecting substantially straight and substantially rectangular tabs; bending alternate ones of said projecting tabs out of the plane of its facet such that the bent and unbent tabs in the mating edge of one facet are out of phase with respect to the bent and unbent tabs in the mating edge of the other facet; and folding said sheet along said score lines and interleaving said projecting tabs at said matable edges to form a conjoint edge, with each of the unbent projecting tabs being substantially in the same plane as its adjoining facet and the outer edge of the projecting, unbent tabs demarcating the conjoint edge.
Claim 14
Independent Claim
178 words
A method for producing reinforcing inserts for flexible packaging from a sheet of cardboard or the like, comprising the steps of: developing on the surface of said sheet the outline for a plurality of facets defining said insert; cutting the developed outline from the sheet, and scoring fold lines thereon for defining said facets; slitting each of matable edges of at least two outboard facets of the insert, to define laterally projecting substantially straight and substantially rectangular tabs; bending alternate ones of said projecting tabs out of the plane of its facet such that the bent and unbent tabs in the mating edge of one facet are out of phase with respect to the bent and unbent tabs in the mating edge of the other facet; and folding said sheet along said score lines and interleaving said projecting tabs at said matable edges to form a conjoint edge, with each of the unbent projecting tabs being substantially in the same plane as its adjoining facet and the outer edge of the projecting, unbent tabs demarcating the conjoint edge.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-25 | 1982-03-27 | 1982-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-25 | 1986-03-27 | 1986-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-25 | 1990-03-27 | 1990-09-26 | $7700.00 | Window Closed / Lapsed |