US4735336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Opener for a packaging container
Assignee: Robert Bosch GmbH
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Filing: 1987-04-21
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Granted: 1988-04-05
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Expires: 2007-04-21
Abstract
Abstract An improved opener for a packaging container arranged to form an opening in one wall to remove the contents includes a tear-open portion surrounded by a weakening line and a pull tab connected to the tear-open portion. To enable use of the pull tab as a reclosure element, it has a stopper-like lower extension which has a complemental outline to that of the tear-open portion and on which a shear edge is disposed. The pull tab is firmly connected to the tear-open portion with a narrow strip of a fusing glue.
Inventors
- 👤 Norbert Buchner
- 👤 Dieter Liede
- 👤 Manfred Reichert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:00
CPC Classifications
B; B65; B65D; B65D17/00; B65D17/28; B65D17/40
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
101 words
An opener for a packaging container having a body element and wall thereof a tear-open portion defined by a weakening line and a rigid pull tab secured adjacent a pivot axis, said pull tab being embodied as a double lever having a shear edge and a pull portion, the improvement comprising the pull tab is provided with a wall portion in which a laterally offset extension having an outline substantially complemental to that of the tear-open portion is defined, said estension adapted to serve as a stopper means for said tear-open portion, and the shear edge is disposed on the extension.
Claim 2
Dependent Claim
101 words
An opener for a packaging container having a body element and wall thereof a tear-open portion defined by a weakening line and a rigid pull tab secured adjacent a pivot axis, said pull tab being embodied as a double lever having a shear edge and a pull portion, the improvement comprising the pull tab is provided with a wall portion in which a laterally offset extension having an outline substantially complemental to that of the tear-open portion is defined, said estension adapted to serve as a stopper means for said tear-open portion, and the shear edge is disposed on the extension.
Claim 3
Dependent Claim
15 words
An opener as defined by claim 1, further wherein the extension has a conical shape.
Claim 4
Dependent Claim
30 words
An opener as defined by claim 1, further wherein an opposite side of the wall of the pull tab in which the extension is defined has a complementally-shaped hollow recess.
Claim 5
Dependent Claim
30 words
An opener as defined by claim 2, further wherein an opposite side of the wall of the pull tab in which the extension is defined has a complementally-shaped hollow recess.
Claim 6
Dependent Claim
27 words
An opener as defined by claim 1, further wherein the pull tab pull portion defines a plane and a circumferential flange surrounds the extension in that plane.
Claim 7
Dependent Claim
27 words
An opener as defined by claim 2, further wherein the pull tab pull portion defines a plane and a circumferential flange surrounds the extension in that plane.
Claim 8
Dependent Claim
27 words
An opener as defined by claim 3, further wherein the pull tab pull portion defines a plane and a circumferential flange surrounds the extension in that plane.
Claim 9
Dependent Claim
22 words
An opener as defined by claim 3, further wherein the pull portion is disposed in the hollow recess lying opposite the extension.
Claim 10
Dependent Claim
22 words
An opener as defined by claim 5, further wherein the pull portion is disposed in the hollow recess lying opposite the extension.
Claim 11
Dependent Claim
21 words
An opener as defined by claim 1, further wherein a connection provided between the extension and the tear-open portion is flexible.
Claim 12
Dependent Claim
23 words
An opening as defined by claim 10, further wherein the connection between the extension and the tear-open portion comprises a tough fusing glue.
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) | 1991-04-05 | 1991-10-05 | 1992-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-05 | 1995-10-05 | 1996-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-05 | 1999-10-05 | 2000-04-05 | $7700.00 | Window Closed / Lapsed |