Patent US3596824A successfully refreshed from Google Patents.
US3596824A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carrier bags
Assignee: Individual
•
Filing: 1969-12-03
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Granted: 1971-08-03
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Expires: 1989-12-03
Abstract
Abstract A synthetic thermoplastic carrier bag which consists of a doubled over thermoplastic sheet forming both faces and bottom of the bag. The edges of the sheet are longitudinally welded together to form the bag container, and there exists a reinforced upper portion around the open periphery of the bag, which portion is at least two layers thick. The leading edges of the upper peripheral portion is formed by a doubled over layer of material, and a grip aperture is formed in each face.
Inventors
- 👤 Michael Lehmacher
- 👤 Hans Lehmacher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:27
CPC Classifications
B; B29; B29C; B29C63/00; B29C63/0026; B29C63/0034; B29C63/0039; A; A45; A45C; A45C3/00; A45C3/04; B65; B65D; B65D33/00; B65D33/02; B65D33/06; B65D33/08; B29C2793/00; B29C2793/0081; B29L; B29L2031/00; B29L2031/712; B29L2031/7128; B31; B31B; B31B70/00; B31B70/74; B31B70/86; B31B70/876; Y; Y10; Y10T; Y10T156/00; Y10T156/10; Y10T156/1052; Y10T156/1056; Y10T156/1057
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
114 words
A synthetic thermoplastic carrier bag comprising a doubled over thermoplastic sheet forming both faces and the bottom of the bag; longitudinal weld seams connecting the edges of the two faces; a reinforced upper portion around the open periphery of the top of the bag of at least three sheet layers thick, the leading edge of said periphery formed by a doubled over layer of material separate from said thermoplastic sheet, the edges of said thermoplastic sheet at the open periphery being contained within the doubled over separate layer of material, and the edges of said doubled over separate layer of material being welded to said thermoplastic sheet; and a grip aperture in each face.
Claim 2
Dependent Claim
114 words
A synthetic thermoplastic carrier bag comprising a doubled over thermoplastic sheet forming both faces and the bottom of the bag; longitudinal weld seams connecting the edges of the two faces; a reinforced upper portion around the open periphery of the top of the bag of at least three sheet layers thick, the leading edge of said periphery formed by a doubled over layer of material separate from said thermoplastic sheet, the edges of said thermoplastic sheet at the open periphery being contained within the doubled over separate layer of material, and the edges of said doubled over separate layer of material being welded to said thermoplastic sheet; and a grip aperture in each face.
Claim 3
Dependent Claim
48 words
A carrier bag as claimed in claim 1 further comprising at least one reinforcing insert covered by said doubled over layer of material, said insert being of a length slightly less than the width of said two faces so as not to interfere with said longitudinal weld seams.
Claim 4
Dependent Claim
75 words
A carrier bag as claimed in claim 1 further comprising two reinforcing inserts, one above the other, in each face covered by said doubled over layer of material, there being a grip aperture punched out in each insert, and the length of each of said inserts is appreciably less than the width of said two faces to allow the areas of the two faces adjacent said reinforcing inserts to be moved apart from each other.
Claim 5
Dependent Claim
56 words
A carrier bag as claimed in claim 3 wherein said two reinforcing inserts in each face is one piece having a weakened line along the median longitudinal axis thereof, and the top insert in each face is capable of being doubled over the bottom insert so that the two grip apertures in each face are overlapping.
Claim 6
Dependent Claim
92 words
A carrier bag as claimed in claim 2 wherein one face of the carrier bag has a greater height than the other face and the carrier bag face of greater height is provided with a reinforcing insert, the width of which is approximately twice the width of the reinforcing insert in the face of smaller height, the greater width reinforcing insert has a weakening along the median longitudinal axis so that the portion extending above the median longitudinal axis may be bent over the leasing edge of the face of smaller height.
Claim 7
Dependent Claim
60 words
A carrier bag as claimed in claim 5 wherein the leading edge of the carrier bag face of greater height is provided in the cenTer with two spaced vertical incisions beginning at the leading edge and passing through part of the reinforcing insert to form a tab so that it can engage with the grip aperture in the other face.
Claim 8
Dependent Claim
28 words
A carrier bag as claimed in claim 2 wherein the grip aperture in each face is formed below the reinforced upper portion and reinforcing inserts of each face.
Claim 9
Dependent Claim
26 words
A carrier bag as claimed in claim 2 wherein the reinforcing inserts are loosely arranged in the pockets formed by the doubled over layer of material.
Claim 10
Dependent Claim
38 words
A carrier bag as claimed in claim 2 wherein the grip apertures are formed within the area in the reinforced upper portion between the reinforcing inserts and the welded edges of the doubled over separate layer of material.
Claim 11
Dependent Claim
28 words
A carrier bag as claimed in claim 9 further comprising an additional weld immediately below the reinforcing inserts, said additional weld extending the entire width of each face.
Claim 12
Dependent Claim
92 words
A carrier bag as claimed in claim 2 wherein one face has a reinforced upper portion of greater height than the other face, said one face has a reinforcing insert covered by said doubled over layer of material, and while the leading edge of said other face is higher than the leading edge of said one face the reinforced upper portion has no reinforcing insert, the grip aperture in said one face is below the reinforcing upper portion and the grip aperture in said other face is within the reinforcing upper portion.
References Cited (Backward Citations)
US3132742A
Cited
FR1470957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-08-02 | 1975-02-01 | 1975-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-02 | 1979-02-01 | 1979-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-02 | 1983-02-01 | 1983-08-03 | $7700.00 | Window Closed / Lapsed |