US3933451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dust collecting bag
Assignee: Individual
•
Filing: 1973-04-19
•
Granted: 1976-01-20
•
Expires: 1993-04-19
Abstract
Abstract A dust collecting bag with a central opening in the endwall thereof, which opening can be covered and uncovered by a cover flap hinged on the endwall of which it constitutes an integral part so that a portion of its free edge opposite the hinged mounting is positioned within the area of the opening. The central opening has at least one locking flap disposed along a portion of the edge opposite the hinged mounting of the cover flap and the portion of the free edge of the cover flap within the area of the opening has slits extending from the edge, with the portion of the cover flap defined by the slits being pivotable out of the plane defined by the remainder of the cover flap. The locking flap bridges the space between the cover flap and the edge of the opening.
Inventors
- 👤 Goran R. Johansson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:37
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/10; A47L9/14; A47L9/1427; A47L9/1436; A47L9/1445; Y; Y10; Y10S; Y10S55/00; Y10S55/02; Y10S55/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
204 words
Dust collecting bag including a substantially rigid endwall, said endwall comprising: a central opening, said opening including locking means disposed about a small portion of its edge; a cover flap having a free defining edge, said cover flap pivotally resiliently mounted on said endwall along a portion of the edge of said opening, said cover flap covering said opening when locked into a covering position by said locking means, with at least a portion of said free defining edge positioned within the area of the opening; said cover flap further includes the presence of slits extending from said at least a portion of said free defining edge, said portion located substantially diametrically opposite the pivotable mounting of said cover flap and with the part of said free edge defined by said slits being pivotable out of the plane defined by the remainder of the cover flap; said locking means located substantially diametrically opposite the pivotal mounting of said cover flap and consisting of at least one pliable locking flap, said locking flap overlying said at least a portion of said free defining edge and biased against the resilient mounting of the cover flap when the cover flap is in a closed and locked position.
Claim 2
Dependent Claim
204 words
Dust collecting bag including a substantially rigid endwall, said endwall comprising: a central opening, said opening including locking means disposed about a small portion of its edge; a cover flap having a free defining edge, said cover flap pivotally resiliently mounted on said endwall along a portion of the edge of said opening, said cover flap covering said opening when locked into a covering position by said locking means, with at least a portion of said free defining edge positioned within the area of the opening; said cover flap further includes the presence of slits extending from said at least a portion of said free defining edge, said portion located substantially diametrically opposite the pivotable mounting of said cover flap and with the part of said free edge defined by said slits being pivotable out of the plane defined by the remainder of the cover flap; said locking means located substantially diametrically opposite the pivotal mounting of said cover flap and consisting of at least one pliable locking flap, said locking flap overlying said at least a portion of said free defining edge and biased against the resilient mounting of the cover flap when the cover flap is in a closed and locked position.
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) | 1979-01-19 | 1979-07-21 | 1980-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-19 | 1983-07-21 | 1984-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-19 | 1987-07-21 | 1988-01-20 | $7700.00 | Window Closed / Lapsed |