Self-sealing dust bag
Abstract
Abstract A SELF-SEALING DUST BAG FOR A VACUUM CLEANER PROVIDED WITH AN INLET TUBE. THE BAG INCLUDES A BODY OF RELATIVELY POROUS PLIABLE DUST-IMPERMEABLE MATERIAL AND A RELATIVELY STIFF PLATE PORTION PROVIDED WITH AN APERTURE FOR THE RECEPTION OF THE INLET TUBE. A PATCH OF RESILIENT ELASTIC, DUST-IMPERMEABLE MATERIAL IS SECURED TO THE INNER SIDE OF THE STIFF PLATE PORTION. THE PATCH IS PROVIDED WITH AN APERTURE SMALLER THAN AND IN REGISTRY WITH THE PLATE PORTION APERTURE. A BRIDGE IS INTEGRAL WITH THE STIFF PLATE PORTION AND EXTENDS OVER THE APERTURE THEREIN. THE BRIDGE INCLUDES A BULBOUS CENTRAL SECTION AND TWO OPPOSITELY LOCATED CONNECTING SECTIONS. THE BULBOUS SECTION IS LARGER THAN THE PATCH APERTURE AND SMALLER THAN THE STIFF PLATE PORTION APERTURE. THE BULBOUS SECTION IS FRANGIBLE AT THE JUNCTION LINE BETWEEN THE BULBOUS SECTION AND ONE OF THE CONNECTING SECTIONS TO ALLOW FOR THE RECEPTION OF THE INLET TUBE IN THE STIFF PLATE PORTION APERTURE.
Inventors
- 👤 J Fesco
Bibliographic Details
Claims Analysis
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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) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |