US3200571A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable filter bag
Assignee: Individual
•
Filing: 1961-08-30
•
Granted: 1965-08-17
•
Expires: 1981-08-30
Abstract
No abstract record available.
Inventors
- 👤 James C Shufflebotham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:12
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; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/788; Y10T137/7881
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
A DISPOSABLE DUST BAG FOR VACUUM CLEANERS COMPRISING A BODY OF RELATIVELY POROUS PLIABLE MATERIAL HAVING AN INLET OPENING OF A SIZE AND CONFIGURATION TO SNUGLY RECEIVE A DISCHARGE TUBE OF A VACUUM CLEANER, EXTERIOR AND INTERIOR REINFORCING MEMBERS SECURED TO THE INNER AND OUTER SURFACE OF ONE WALL OF THE BODY AROUND THE OPENING, EACH REINFORCING MEMBER HAVING ALIGNED OPENINGS OF SUBSTANTIALLY THE SAME SIZE AND CONFIGURATION AS THE WALL OPENING, A FLEXIBLE SEALING RING CARRIED BY THE EXTERIOR REINFORCING MEMBER AND EXTENDING INWARDLY OF THE INNER EDGE OF THE REINFORCING MEMBER HAVING AN OPENING IN ALIGNMENT WITH THE OPENINGS OF SAID REINFORCING MEMBERS BUT OF A SUBSTANTIALLY SMALLER DIAMETER THAN THE OUTER DIMENSIONS OF THE DISCHARGE TUBE FOR GRIPPING CONTACT WITH A DISCHARGE TUBE OF AW VACUUM CLEANER, AND A SELF-CLOSING VALVE MEMBER SECURED TO THE INNER REINFORCING MEMBER AND SPACED A MATERIAL DISTANCE FROM THE SEALING RING, SAID VALVE MEMBER BEING FORMED FROM A SHEET OF RESILIENT FLEXIBLE MATERIAL, SAID SHEET BEING SLIT TO PROVIDE FLEXIBLE LEAVES, WHEREBY UPON THE PLACING OF A BAG ON A DISCHARGE TUBE OF A VACUUM CLEANER THE WALLS OF SAID FLEXIBLE SEALING
Claim 2
Dependent Claim
191 words
A DISPOSABLE DUST BAG FOR VACUUM CLEANERS COMPRISING A BODY OF RELATIVELY POROUS PLIABLE MATERIAL HAVING AN INLET OPENING OF A SIZE AND CONFIGURATION TO SNUGLY RECEIVE A DISCHARGE TUBE OF A VACUUM CLEANER, EXTERIOR AND INTERIOR REINFORCING MEMBERS SECURED TO THE INNER AND OUTER SURFACE OF ONE WALL OF THE BODY AROUND THE OPENING, EACH REINFORCING MEMBER HAVING ALIGNED OPENINGS OF SUBSTANTIALLY THE SAME SIZE AND CONFIGURATION AS THE WALL OPENING, A FLEXIBLE SEALING RING CARRIED BY THE EXTERIOR REINFORCING MEMBER AND EXTENDING INWARDLY OF THE INNER EDGE OF THE REINFORCING MEMBER HAVING AN OPENING IN ALIGNMENT WITH THE OPENINGS OF SAID REINFORCING MEMBERS BUT OF A SUBSTANTIALLY SMALLER DIAMETER THAN THE OUTER DIMENSIONS OF THE DISCHARGE TUBE FOR GRIPPING CONTACT WITH A DISCHARGE TUBE OF AW VACUUM CLEANER, AND A SELF-CLOSING VALVE MEMBER SECURED TO THE INNER REINFORCING MEMBER AND SPACED A MATERIAL DISTANCE FROM THE SEALING RING, SAID VALVE MEMBER BEING FORMED FROM A SHEET OF RESILIENT FLEXIBLE MATERIAL, SAID SHEET BEING SLIT TO PROVIDE FLEXIBLE LEAVES, WHEREBY UPON THE PLACING OF A BAG ON A DISCHARGE TUBE OF A VACUUM CLEANER THE WALLS OF SAID FLEXIBLE SEALING
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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) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |