US4688676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pad of tear away thermoplastic carrying bags
Assignee: Lemo M Lehmacher and Sohn GmbH Maschinenfabrik
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Filing: 1986-12-08
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Granted: 1987-08-25
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Expires: 2006-12-08
Abstract
Abstract The invention is a tear away block of thermoplastic carrying bags in which each of the carrying bags have a front wall, a back wall and two handle grip punch outs in the vicinity of an upper entrance opening. The carrying bags are provided with a sinusoidal shaped entrance opening which bounds a central sine wave region with two handle grip punch outs. A rectangular reinforcing piece of plastic foil is glued on at least one wall of the carrying bags in the vicinity of the handle grip punch outs. The carrying bags are combined in the tear away block with the aid of at least one interlocking heat seal joint in an interlocking section in each of the carrying bags and may be torn away from the tear away block by a row of perforations. The central sine wave region of the rear wall projects with an upper portion above the upper edge of the reinforcing piece, while the corresponding portion of the front wall is removed or folded over so that the upper portion of the rear wall projecting over the upper edge of its reinforcing piece forms the interlocking section. The row of perforations is positioned in the vicinity of and above the upper edge of the reinforcing piece in the upper portion of the rear wall.
Inventors
- 👤 Armin Meyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:57
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/001; Y; Y10; Y10S; Y10S206/00; Y10S206/806; Y10S206/82
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
221 words
In a tear-away pad of thermoplastic carrying bags, each of said thermoplastic carrying bags having a front wall, a back wall and two handle grip punch outs in the vicinity of an upper entrance opening, said carrying bags being provided with a sinusoidal shaped entrance opening which bounds a central sine wave region which is formed with said two handle grip punch outs, a rectangular reinforcing piece of plastic foil being bonded on at least one of said walls of each carrying bag in the vicinity of said handle grip punch outs, said thermoplastic carrying bags being combined in said tear-away pad by at least one interlocking heat seal joint in an interlocking section so that said thermoplastic carrying bags may be torn away by a row of perforations from said tear-away pad, the improvement wherein: said central sine wave region of said rear wall projects with an upper portion above an upper edge of said reinforcing piece; a corresponding portion of said front wall has an upper edge lying below said upper portion so that said upper portion projecting over said upper edge of said reinforcing piece forms said interlocking section; and said row of perforations is formed directly in said upper portion of said rear wall in the vicinity of and above said upper edge of said reinforcing piece.
Claim 2
Dependent Claim
221 words
In a tear-away pad of thermoplastic carrying bags, each of said thermoplastic carrying bags having a front wall, a back wall and two handle grip punch outs in the vicinity of an upper entrance opening, said carrying bags being provided with a sinusoidal shaped entrance opening which bounds a central sine wave region which is formed with said two handle grip punch outs, a rectangular reinforcing piece of plastic foil being bonded on at least one of said walls of each carrying bag in the vicinity of said handle grip punch outs, said thermoplastic carrying bags being combined in said tear-away pad by at least one interlocking heat seal joint in an interlocking section so that said thermoplastic carrying bags may be torn away by a row of perforations from said tear-away pad, the improvement wherein: said central sine wave region of said rear wall projects with an upper portion above an upper edge of said reinforcing piece; a corresponding portion of said front wall has an upper edge lying below said upper portion so that said upper portion projecting over said upper edge of said reinforcing piece forms said interlocking section; and said row of perforations is formed directly in said upper portion of said rear wall in the vicinity of and above said upper edge of said reinforcing piece.
Claim 3
Dependent Claim
24 words
The improvement defined in claim 1 wherein a flap of said front wall is folded over at said upper edge of said front wall.
Claim 4
Dependent Claim
24 words
The improvement defined in claim 1 wherein a flap of said front wall is cut away at said upper edge of said front wall.
Claim 5
Dependent Claim
153 words
A tear-away pad of thermoplastic carrying bags, each of said thermoplastic carrying bags comprising: a rear wall with a sinusoidal shaped upper portion having both a reinforcing piece and a handle grip punch out attached thereto in the vicinity of said upper portion, said upper portion projecting over said reinforcing piece to form an interlocking section, said interlocking section having a row of perforations adjacent said reinforcing piece; a front wall attached with said rear wall to form one of said thermoplastic carrying bags with an upper entrance opening, said front wall being provided with a truncated or folded over sinusoidal shaped upper portion, another of said reinforcing pieces and another of said handle grip punch outs attached thereto in the vicinity of said truncated or folded over sinusoidal shaped upper portion; and at least one interlocking heat seal joint joining said interlocking sections of said rear walls of said thermoplastic carrying bags.
Claim 6
Dependent Claim
153 words
A tear-away pad of thermoplastic carrying bags, each of said thermoplastic carrying bags comprising: a rear wall with a sinusoidal shaped upper portion having both a reinforcing piece and a handle grip punch out attached thereto in the vicinity of said upper portion, said upper portion projecting over said reinforcing piece to form an interlocking section, said interlocking section having a row of perforations adjacent said reinforcing piece; a front wall attached with said rear wall to form one of said thermoplastic carrying bags with an upper entrance opening, said front wall being provided with a truncated or folded over sinusoidal shaped upper portion, another of said reinforcing pieces and another of said handle grip punch outs attached thereto in the vicinity of said truncated or folded over sinusoidal shaped upper portion; and at least one interlocking heat seal joint joining said interlocking sections of said rear walls of said thermoplastic carrying bags.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-08-24 | 1991-02-23 | 1991-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-24 | 1995-02-23 | 1995-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-24 | 1999-02-23 | 1999-08-25 | $7700.00 | Window Closed / Lapsed |