US3633642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag of plastics material sheeting
Assignee: Minigrip Inc
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Filing: 1969-10-28
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Granted: 1972-01-11
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Expires: 1989-10-28
Abstract
Abstract Two opposed bag walls are sealed together at the side edges and at the bottom. Two fastener elements are respectively integral with said bag walls and disposed on the inside thereof and spaced from the free end thereof. The fastener consists of two interengaging hollow ribs, which have outside wall portions that do not contact each other and constitute webs for backing the interengaging other wall portions of the hollow ribs. The interengaging other wall portions consist of one-sided undercut hooks. The fastener elements have the same profile.
Inventors
- 👤 Karlheinz Siegel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 03:28
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B65D33/25; B65D33/2508; B65D33/2541; A; A44; A44B; A44B19/00; A44B19/10; A44B19/16
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
136 words
A bag which is made of plastics material sheeting and which comprises two opposed bag walls sealed together at the side edges and bottom thereof and two fastener elements respectively integral with said bag walls disposed on the inside thereof and spaced from the free end thereof, each fastener element including the same configuration of spaced hook means and fulcrum means, each said hook means including a single hook, each said single hook locking with each other between each said fulcrum means and adjacent said fulcrum means of the opposing fastener element when the bag is closed, and said fulcrum means of at least one of the fastener elements physically pressing against said single hook of the opposing fastener element preventing opening of the bag whenever the contents of the bag push the bag walls outward.
Claim 2
Dependent Claim
136 words
A bag which is made of plastics material sheeting and which comprises two opposed bag walls sealed together at the side edges and bottom thereof and two fastener elements respectively integral with said bag walls disposed on the inside thereof and spaced from the free end thereof, each fastener element including the same configuration of spaced hook means and fulcrum means, each said hook means including a single hook, each said single hook locking with each other between each said fulcrum means and adjacent said fulcrum means of the opposing fastener element when the bag is closed, and said fulcrum means of at least one of the fastener elements physically pressing against said single hook of the opposing fastener element preventing opening of the bag whenever the contents of the bag push the bag walls outward.
Claim 3
Dependent Claim
22 words
A bag according to claim 1, characterized in that each fastener element has tear tabs which are thicker than said bag walls.
Claim 4
Dependent Claim
20 words
A bag according to claim 1 characterized in that the fastener elements have rear surfaces which are flat and parallel.
Claim 5
Dependent Claim
24 words
A bag according to claim 3, characterized in that it is made from tubing and including a top slider mounted adjacent said rear surfaces.
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) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |