US3237846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End closure for disposable dust bag
Assignee: Electrolux Corp
•
Filing: 1964-03-06
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Granted: 1966-03-01
•
Expires: 1984-03-06
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:07
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; A47L9/1436; A47L9/1445; A47L9/1454; Y; Y10; Y10S; Y10S55/00; Y10S55/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
AND END CLOSURE FOR A DUST BAG COMPRISING: TWO SUPERIMPOSED FLEXIBLE SHEETS, EACH SHEET HAVING ONE APERTURE THEREIN COPLANAR WITH SAID SHEET, A PORTION OF EACH SHEET BEING CUT TO DEFINE A SINGLE FLAP INTEGRAL WITH SAID SHEET AND NORMALLY CANTILEVERED THEREFROM INTO SAID ONE APERTURE AND IS COPLANAR RELATION WITH SAID ONE APERTURE TO CLOSE A MAJOR PART OF SAID APERTURE WHILE LEAVING A SINGLE MINOR PART OF SAID APERTURE OPEN, THE APERTURES IN THE SUPERMPOSED SHEETS BEING SUBSTANTIALLY IN REGISTRY, BOTH FLAPS, WHEN IN COPLANAR RELATION WITH THEIR RESPECTIVE APERTURES, BEING ARRANGED SUCH THAT THEY EXTEND IN SUBSTANTIALLY DIAMETRICALLY OPPOSITE DIRECTIONS TOWARD EACH OTHER AND OVERLAP EACH OTHER WITH THE FLAP IN ONE SHEET COMPOLETELY COVERING THE SINGLE OPEN MINOR PART OF THE APERTURE IN THE OTHER SHEET AND THE FLAP IN SAID OTHER SHEET COMPLETELY COVERING THE SINGLE OPEN MINOR PART OF THE APERTURE IN SAID ONE SHEET.
Claim 2
Dependent Claim
151 words
AND END CLOSURE FOR A DUST BAG COMPRISING: TWO SUPERIMPOSED FLEXIBLE SHEETS, EACH SHEET HAVING ONE APERTURE THEREIN COPLANAR WITH SAID SHEET, A PORTION OF EACH SHEET BEING CUT TO DEFINE A SINGLE FLAP INTEGRAL WITH SAID SHEET AND NORMALLY CANTILEVERED THEREFROM INTO SAID ONE APERTURE AND IS COPLANAR RELATION WITH SAID ONE APERTURE TO CLOSE A MAJOR PART OF SAID APERTURE WHILE LEAVING A SINGLE MINOR PART OF SAID APERTURE OPEN, THE APERTURES IN THE SUPERMPOSED SHEETS BEING SUBSTANTIALLY IN REGISTRY, BOTH FLAPS, WHEN IN COPLANAR RELATION WITH THEIR RESPECTIVE APERTURES, BEING ARRANGED SUCH THAT THEY EXTEND IN SUBSTANTIALLY DIAMETRICALLY OPPOSITE DIRECTIONS TOWARD EACH OTHER AND OVERLAP EACH OTHER WITH THE FLAP IN ONE SHEET COMPOLETELY COVERING THE SINGLE OPEN MINOR PART OF THE APERTURE IN THE OTHER SHEET AND THE FLAP IN SAID OTHER SHEET COMPLETELY COVERING THE SINGLE OPEN MINOR PART OF THE APERTURE IN SAID ONE SHEET.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |