US3214882A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packaging methods and apparatus
Assignee: WR Grace and Co
•
Filing: 1962-11-30
•
Granted: 1965-11-02
•
Expires: 1982-11-30
Abstract
No abstract record available.
Inventors
- 👤 Emns Ronald Wilbur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:35
CPC Classifications
B; B65; B65B; B65B53/00; B65B53/02; B65B53/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
METHOD FOR FORMING A COVER OVER THE OPEN SIDE OF A CONTAINER COMPRISING: (A) PLACING A SHEET OF HEAT-SHRINKABLE HIGH SHRINK ENERGY BIAXIALLY ORIENTED THERMOPLASTIC FILM OVER AND BEYOND THE PERIPHERAL LIP OF SAID OPEN SIDE; (B) HEATING THE EDGES OF SAID FILM SHEET AROUNG SUBSTANTIALLY THE ENTIRE PERIPHERY THEREOF WHILE RESTRAINING SAID EDGES OUT OF CONTACT WITH THE WALLS OF SAID CONTAINER; (C) CONTINUING SAID HEATING FOR A PERIOD OF TIME SUFFICIENT TO SHRINK THE FILM SHEET EDGES INTO A THICKENED ELASTIC BAND SPACED APART FROM SAID PERIPHERAL LIP; (D) MOVING THE CONTAINER AGAINST SAID FILM WHILE DISCONTINUING SAID EDGE RESTRAINT AND SNAPPLING THE PREFORMED ELASTIC BAND INTO TIGHT ENGAGEMENT WITH AND AROUND THE PERIPHERY OF THE CONTAINEER.
Claim 2
Dependent Claim
119 words
METHOD FOR FORMING A COVER OVER THE OPEN SIDE OF A CONTAINER COMPRISING: (A) PLACING A SHEET OF HEAT-SHRINKABLE HIGH SHRINK ENERGY BIAXIALLY ORIENTED THERMOPLASTIC FILM OVER AND BEYOND THE PERIPHERAL LIP OF SAID OPEN SIDE; (B) HEATING THE EDGES OF SAID FILM SHEET AROUNG SUBSTANTIALLY THE ENTIRE PERIPHERY THEREOF WHILE RESTRAINING SAID EDGES OUT OF CONTACT WITH THE WALLS OF SAID CONTAINER; (C) CONTINUING SAID HEATING FOR A PERIOD OF TIME SUFFICIENT TO SHRINK THE FILM SHEET EDGES INTO A THICKENED ELASTIC BAND SPACED APART FROM SAID PERIPHERAL LIP; (D) MOVING THE CONTAINER AGAINST SAID FILM WHILE DISCONTINUING SAID EDGE RESTRAINT AND SNAPPLING THE PREFORMED ELASTIC BAND INTO TIGHT ENGAGEMENT WITH AND AROUND THE PERIPHERY OF THE CONTAINEER.
References Cited (Backward Citations)
US2976655A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-11-01 | 1969-05-03 | 1969-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-01 | 1973-05-03 | 1973-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-01 | 1977-05-03 | 1977-11-02 | $7700.00 | Window Closed / Lapsed |