US3583459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed bag
Assignee: Dart Industries Inc
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Filing: 1969-09-11
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Granted: 1971-06-08
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Expires: 1989-09-11
Abstract
Abstract A bag is constructed of interconnected panels each of which comprises a pair of vinyl cover sheets enclosing a fiber glass filler. The outermost edges of the cover sheets are electronically sealed to one another to trap the filler between the cover sheets; and a further electronic seal is provided between the cover sheets inward of the outermost edges thereof and extending through the fiber glass filler to keep the filler from shifting or bunching up.
Inventors
- 👤 Moritz Nappe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:44
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/38; B65D81/3888; B65D81/3897
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
210 words
A carrier bag structure having a flexible insulating wall panel comprising a unitary, generally flat surfaced mat of fiber glass material, said panel including a cover of air and watertight flexible thermoplastic sheet material completely surrounding and enclosing said fiber glass mat, said cover including a pair of cover sections spaced from one another adjacent the opposing flat surfaces of said mat and having peripheral edges which overlie one another and are electronically sealed to one another along peripheral seams spaced outwardly of and free from the peripheral edges of said mat, each of said cover sections including regions which are depressed toward one another through said fiber glass material to define supplemental seam regions extending along lines positioned inward of the peripheral edges of both said cover sections and of said mat, said supplemental seam regions being electronically sealed to one another through said fiber glass material to trap a portion of said mat between said supplemental seam regions and the electronically sealed peripheral seams of said cover sections, whereby said mat is sealed within said thermoplastic cover sections by means of said electronic peripheral seams and is prevented from shifting in position or bunching up between said cover sections by means of said electronically sealed supplemental seam regions.
Claim 2
Dependent Claim
210 words
A carrier bag structure having a flexible insulating wall panel comprising a unitary, generally flat surfaced mat of fiber glass material, said panel including a cover of air and watertight flexible thermoplastic sheet material completely surrounding and enclosing said fiber glass mat, said cover including a pair of cover sections spaced from one another adjacent the opposing flat surfaces of said mat and having peripheral edges which overlie one another and are electronically sealed to one another along peripheral seams spaced outwardly of and free from the peripheral edges of said mat, each of said cover sections including regions which are depressed toward one another through said fiber glass material to define supplemental seam regions extending along lines positioned inward of the peripheral edges of both said cover sections and of said mat, said supplemental seam regions being electronically sealed to one another through said fiber glass material to trap a portion of said mat between said supplemental seam regions and the electronically sealed peripheral seams of said cover sections, whereby said mat is sealed within said thermoplastic cover sections by means of said electronic peripheral seams and is prevented from shifting in position or bunching up between said cover sections by means of said electronically sealed supplemental seam regions.
Claim 3
Dependent Claim
34 words
The structure of claim 1 wherein said supplemental seam regions comprise a plurality of separate seal spots spaced from one another along lines extending generally parallel to the peripheral edges of said cover sections.
Claim 4
Dependent Claim
91 words
The structure of claim 1 wherein said mat and said cover sections are each rectangularly shaped, said supplemental seam regions extending in a rectangular configuration along lines parallel to all four edges of said cover sheets and mat at positions relatively closely adjacent to the peripheral edges of said cover sections to trap in place a relatively narrow peripheral band of said mat adjacent all four edges of said mat, the remaining main portion of said mat inward of said supplemental seam regions being free of attachment from said cover sheets.
Claim 5
Dependent Claim
18 words
The structure of claim 3 wherein said peripheral seams extend along all four edges of said cover sections.
Claim 6
Dependent Claim
43 words
The carrier bag structure of claim 1 wherein a plurality of said insulating walls panels are interconnected to one another by sewn seams, said sewn seams being confined to positions located between the peripheral seams and supplemental seams regions of each such panel.
Claim 7
Dependent Claim
12 words
The structure of claim 1 wherein said thermoplastic sheet material is vinyl.
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) | 1974-06-07 | 1974-12-07 | 1975-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-07 | 1978-12-07 | 1979-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-07 | 1982-12-07 | 1983-06-08 | $7700.00 | Window Closed / Lapsed |