US4670030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner filter
Assignee: Individual
•
Filing: 1986-05-23
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Granted: 1987-06-02
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Expires: 2006-05-23
Abstract
Abstract A double walled vacuum cleaner filter having a reusable inner bag with a zippered opening for debris removal.
Inventors
- 👤 Steven Schultz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:41
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/149; Y; Y10; Y10S; Y10S55/00; Y10S55/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
114 words
In a vacuum cleaner filter for a vacuum cleaner apparatus having a motor, fan, an air discharge outlet and a double walled filter composed of an elongated outer bag and an elongated inner bag connected to the air discharge outlet to filter and collect dust from an air stream therefrom, the improvement comprising said elongated inner bag defining an elongated opening disposed along the longitudinal axis of said inner bag and fastener means for selectively opening and closing of the elongated opening of said inner bag, said elongated opening extending a substantial portion of the inner bag longitudinal axis thereby enabling convenient removal of dust and debris therein therefrom, said filter being consequently reusable.
Claim 2
Dependent Claim
114 words
In a vacuum cleaner filter for a vacuum cleaner apparatus having a motor, fan, an air discharge outlet and a double walled filter composed of an elongated outer bag and an elongated inner bag connected to the air discharge outlet to filter and collect dust from an air stream therefrom, the improvement comprising said elongated inner bag defining an elongated opening disposed along the longitudinal axis of said inner bag and fastener means for selectively opening and closing of the elongated opening of said inner bag, said elongated opening extending a substantial portion of the inner bag longitudinal axis thereby enabling convenient removal of dust and debris therein therefrom, said filter being consequently reusable.
Claim 3
Dependent Claim
114 words
In a vacuum cleaner filter for a vacuum cleaner apparatus having a motor, fan, an air discharge outlet and a double walled filter composed of an elongated outer bag and an elongated inner bag connected to the air discharge outlet to filter and collect dust from an air stream therefrom, the improvement comprising said elongated inner bag defining an elongated opening disposed along the circumferential axis of said inner bag and fastener means for selectively opening and closing of the elongated opening of said inner bag, said elongated opening extending a substantial portion of the inner bag circumferential axis thereby enabling convenient removal of dust and debris therein therefrom, said filter being consequently reusable.
Claim 4
Dependent Claim
114 words
In a vacuum cleaner filter for a vacuum cleaner apparatus having a motor, fan, an air discharge outlet and a double walled filter composed of an elongated outer bag and an elongated inner bag connected to the air discharge outlet to filter and collect dust from an air stream therefrom, the improvement comprising said elongated inner bag defining an elongated opening disposed along the circumferential axis of said inner bag and fastener means for selectively opening and closing of the elongated opening of said inner bag, said elongated opening extending a substantial portion of the inner bag circumferential axis thereby enabling convenient removal of dust and debris therein therefrom, said filter being consequently reusable.
Claim 5
Dependent Claim
12 words
The filter of claim 1 wherein said fastener means is a zipper.
Claim 6
Dependent Claim
12 words
The filter of claim 2 wherein said fastener means is a zipper.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-01 | 1990-12-01 | 1991-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-01 | 1994-12-01 | 1995-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-01 | 1998-12-01 | 1999-06-02 | $7700.00 | Window Closed / Lapsed |