US3679126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bag structures with integral closure arrangement
Assignee: Mobil Oil AS
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Filing: 1970-05-26
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Granted: 1972-07-25
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Expires: 1990-05-26
Abstract
Abstract To provide a closure for bags of flexible material such as polyethylene, light fabric, or the like, a restricted opening is formed near the top of the bag, for example molding an opening into a wall of the bag, by a seam partitioning off a portion of the mouth of the bag, a pair of seams extending towards a side with the side being slit open between the seams, or a pair of seams between which a slit is cut; or a tear-off strip, or loop can be formed on the bag. The size of the opening is just large enough to enable a user to gather together the remainder of the mouth of the bag an push it through the opening, the released gathered material then flaring out by its own elasticity to provide a closure which will securely hold contents within the bag. If the bag is made of stressed material, such as streched polyethylene, applying heat in the range of the melting temperature to to bag causes localized melting; release of stress results in the formation of a hole having reinforced surroundings of re-melted, unstressed material.
Inventors
- 👤 Connie Lake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 09:31
CPC Classifications
B; B65; B65D; B65D33/00; B65D33/16; B65D33/24; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1334; Y10T428/1345; Y10T428/24; Y10T428/24025; Y10T428/24273
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
191 words
Bag structure comprising walls of flexible material having a filling opening to provide access to the inside of the bag between the walls thereof; means defining a restricted opening formed in the vicinity of the mouth of the bag and forming a portion of the mouth of the bag, said restricted opening being delimited by a seam line interconnecting adjacent, overlying wall portions to form a loop of material, said opening being of such size that the entire material of the walls in the region of the mouth of the bag, when gathered tightly together, will have a cross sectional dimension slightly less than the dimensions of said opening to permit the tightly gathered material to be drawn through the opening and close the bag and to permit said tightly gathered material to flare and expand to a size larger than said opening; and a tear line fOrmed beyond said seam line and extending beneath said seam line and said loop to permit severing of said loop of material, as an integral element, upon gathering of the walls of the bag to be drawn through the opening defined by the loop.
Claim 2
Dependent Claim
191 words
Bag structure comprising walls of flexible material having a filling opening to provide access to the inside of the bag between the walls thereof; means defining a restricted opening formed in the vicinity of the mouth of the bag and forming a portion of the mouth of the bag, said restricted opening being delimited by a seam line interconnecting adjacent, overlying wall portions to form a loop of material, said opening being of such size that the entire material of the walls in the region of the mouth of the bag, when gathered tightly together, will have a cross sectional dimension slightly less than the dimensions of said opening to permit the tightly gathered material to be drawn through the opening and close the bag and to permit said tightly gathered material to flare and expand to a size larger than said opening; and a tear line fOrmed beyond said seam line and extending beneath said seam line and said loop to permit severing of said loop of material, as an integral element, upon gathering of the walls of the bag to be drawn through the opening defined by the loop.
Claim 3
Dependent Claim
16 words
A bag structure according to claim 1 wherein the bag wall material is a polyethylene film.
Claim 4
Dependent Claim
98 words
In a bag structure, means defining a restricted opening adjacent the mouth of said bag, said opening being defined in part, at least, by a wall of said bag structure; said opening being defined by a seam interconnecting adjacent, overlying, continuous wall portions to form a loop formed by said adjacent, continuous wall portions and said seam; a tear line formed adjacent and beyond said seam with respect to said loop to permit severing of said loop into a separate portion of the bag; and said seam providing a reinforced zone formed in said wall adjacent said opening.
Claim 5
Dependent Claim
98 words
In a bag structure, means defining a restricted opening adjacent the mouth of said bag, said opening being defined in part, at least, by a wall of said bag structure; said opening being defined by a seam interconnecting adjacent, overlying, continuous wall portions to form a loop formed by said adjacent, continuous wall portions and said seam; a tear line formed adjacent and beyond said seam with respect to said loop to permit severing of said loop into a separate portion of the bag; and said seam providing a reinforced zone formed in said wall adjacent said opening.
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |