US4155727A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vacuum cleaner bag
Assignee: Vorwerk and Co Interholding GmbH
•
Filing: 1977-09-01
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Granted: 1979-05-22
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Expires: 1997-09-01
Abstract
Abstract A disposable vacuum cleaner bag of paper is insertable into a bag compartment of a cleaner. It has an open dirt intake end and a remote closed end. At the closed end the bag is provided with one or more reinforcing strips having bevelled edges.
Inventors
- 👤 Heinz Kaulig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:04
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; Y; Y10; Y10S; Y10S55/00; Y10S55/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
93 words
A disposable vacuum cleaner bag for installation in vacuum cleaner bag compartments having internal projections, comprising an elongated bag body composed at least in part of air-permeable but dust-filtering material and having an open end and a closed end which latter is inserted first when the bag is to be installed in said vacuum cleaner bag compartment; and anti-snag means on said bag body at least at said closed end to prevent snagging of the bag body on the internal projections of the bag compartment during insertion of the bag into the same.
Claim 2
Dependent Claim
93 words
A disposable vacuum cleaner bag for installation in vacuum cleaner bag compartments having internal projections, comprising an elongated bag body composed at least in part of air-permeable but dust-filtering material and having an open end and a closed end which latter is inserted first when the bag is to be installed in said vacuum cleaner bag compartment; and anti-snag means on said bag body at least at said closed end to prevent snagging of the bag body on the internal projections of the bag compartment during insertion of the bag into the same.
Claim 3
Dependent Claim
46 words
A disposable vacuum cleaner bag as defined in claim 1, wherein said anti-snag means comprise at least one reinforcing strip mounted on said bag body, extending transversely thereof and having lateral edge portions which converge towards one another and in direction away from said open end.
Claim 4
Dependent Claim
26 words
A disposable vacuum cleaner bag as defined in claim 2, wherein said at least one strip extends beyond the respective lateral edges of said bag body.
Claim 5
Dependent Claim
35 words
A disposable vacuum cleaner bag as defined in claim 2, wherein said at least one strip is composed of two symmetrical strip sections each connected to the other and sandwiching said closed end between themselves.
Claim 6
Dependent Claim
47 words
A disposable vacuum cleaner bag as defined in claim 4, each of said strip sections having one portion overlying a part of said bag body and another portion projecting beyond said closed end, said other portions overlying one another and being provided with said lateral edge portions.
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) | 1982-05-21 | 1982-11-20 | 1983-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-21 | 1986-11-20 | 1987-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-21 | 1990-11-20 | 1991-05-22 | $7700.00 | Window Closed / Lapsed |