US4708249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two part tape tab for opening a container
Assignee: 3M Co
•
Filing: 1987-02-24
•
Granted: 1987-11-24
•
Expires: 2007-02-24
Abstract
Abstract A tab formed on a length of pressure-sensitive adhesive tape and having a cut in the tab permits tearing of the tab and tape lengthwise to open a hole in a flexible packaging material to expose the contents. The tape is placed over an opening formed in the material and the tearing of the tape tab by separating the two portions on either side of the cut will cause a tearing of the tape longitudinally causing a single tear at the opening to propagate in opposite directions from the opening.
Inventors
- 👤 Jeffrey O. Emslander
- 👤 Curtis L. Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:43
CPC Classifications
B; B65; B65D; B65D81/00; B65D81/34; B65D81/3446; B65D81/3453; B65D77/00; B65D77/22; B65D77/30; B65D2205/00; B65D2577/00; B65D2577/10; B65D2577/20; B65D2577/2041; B65D2577/2058; B65D2577/2075; B65D2577/2091; B65D2581/00; B65D2581/34; B65D2581/3401; B65D2581/3402; B65D2581/3421
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
198 words
An easy open package for enclosing a product in a sealed flexible container, said package comprising a flexible portion having first and second openings extending through said portion in spaced relationship, a first length of tape adhered to the flexible material and covering said first opening, a second length of tape adhered to the flexible material and covering said second opening, said tape comprising a backing having a coating of adhesive on one surface of the backing, said adhesive adhering the tape to the material surrounding the opening and each length of said tape having a free end with the free end of one length of tape adhered to the free end of the other length of tape to define together a tab with a free edge formed in a position spaced between said first and second openings, said tab having a discontinuity along said free edge to permit separation of the tab to afford a tearing of the lengths of tape generally centrally thereof, said tearing of the tape being along a line generally aligned with the openings in the material whereby tearing of the tape tends to cause a tearing of the material at said openings.
Claim 2
Dependent Claim
198 words
An easy open package for enclosing a product in a sealed flexible container, said package comprising a flexible portion having first and second openings extending through said portion in spaced relationship, a first length of tape adhered to the flexible material and covering said first opening, a second length of tape adhered to the flexible material and covering said second opening, said tape comprising a backing having a coating of adhesive on one surface of the backing, said adhesive adhering the tape to the material surrounding the opening and each length of said tape having a free end with the free end of one length of tape adhered to the free end of the other length of tape to define together a tab with a free edge formed in a position spaced between said first and second openings, said tab having a discontinuity along said free edge to permit separation of the tab to afford a tearing of the lengths of tape generally centrally thereof, said tearing of the tape being along a line generally aligned with the openings in the material whereby tearing of the tape tends to cause a tearing of the material at said openings.
Claim 3
Dependent Claim
34 words
An easy open package according to claim 1, wherein the discontinuity formed in the tab is defined by a notch formed in the free edge of said lengths of tape which are adhered together.
Claim 4
Dependent Claim
48 words
An easy open package according to claim 1 wherein said free end of said second length of tape extends beyond the free end of said first length of tape to expose a band of adhesive for holding the tab flat against the material when the tab is folded.
References Cited (Backward Citations)
US31571A
Cited
US1641408A
Cited
US2527073A
Cited
US2648463A
Cited
US2699286A
Cited
US2745754A
Cited
US2799462A
Cited
US3054680A
Cited
US3104047A
Cited
US3195722A
Cited
US3185372A
Cited
US3189253A
Cited
US3259235A
Cited
US3446637A
Cited
US3535409A
Cited
US3442436A
Cited
US3439866A
Cited
US3450328A
Cited
US3616990A
Cited
US3595468A
Cited
US3759439A
Cited
FR2120312A5
Cited
US3893460A
Cited
US4038425A
Cited
US3983994A
Cited
US4292332A
Cited
US4141487A
Cited
USRE31571E
Cited
US4288027A
Cited
US4420080A
Cited
US4353460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-23 | 1991-05-25 | 1991-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-23 | 1995-05-25 | 1995-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-23 | 1999-05-25 | 1999-11-24 | $7700.00 | Window Closed / Lapsed |