Patent US3833962A successfully refreshed from Google Patents.
US3833962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle for vacuum cleaner
Assignee: Allstar Verbrauchsguter GmbH and Co KG
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Filing: 1972-04-17
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Granted: 1974-09-10
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Expires: 1992-04-17
Abstract
Abstract A nozzle for a vacuum cleaner having a hollow nozzle body having means for connecting the vacuum pipe of a vacuum cleaner to the nozzle body, the nozzle body having a vacuum pick-up opening in a side thereof which is turned away from the connecting means, the part of the opening in the side of the nozzle body being closed by an insert the outer area of which is covered by a brush cover. The insert may either be installed as a part removable from the nozzle body or as a permanent part thereof. In certain of the disclosed embodiments the bristles of the brush cover are tilted with respect to the main extent of the brush cover. The bristles may all be pointed in the same direction, as for example, in the pull direction of the vacuum nozzle. In another illustrative embodiment, a part of the bristles may be tilted in the pull direction and a part may be tilted in the push direction, so that the nozzle picks up lint, dirt and the like in both directions of its travel. The nozzle of the invention may also be pivotally connected with the vacuum pipe of a vacuum cleaner, and may include a pivotally mounted skirt which defines the vacuum area in communication with the vacuum port of the nozzle in all possible positions of tilting of the nozzle about its pivotal connection.
Inventors
- 👤 K Krusche
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:04
CPC Classifications
A; A47; A47L; A47L9/00; A47L9/02; A47L9/06; A47L9/0606; A47L9/0613; A47L9/0673
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
177 words
A nozzle for a vacuum cleaner, comprising a hollow nozzle body having means for connecting the vacuum pipe of a vacuum cleaner thereto, a side of the nozzle body which is turned away from the vacuum pipe connecting means having an opening therein, and an insert in the nozzle body closing a portion of such opening, said insert having a transverse bottom plate and upstanding side walls, the outer area of the insert being covered with a brush cover which extends across the bottom plate outwardly thereof and up along the side walls and a lid-shaped upper part clamping the brush cover downwardly upon the upper edge of the side walls of said insert, wherein said insert has a cup-shaped body and the upper edges of the side walls have a plurality of sawtooth projections, and the lid-shaped upper part has a downwardly extending skirt which has a plurality of projections so as to interdigitate with the projections on the side walls and to clamp the edges of the brush between said skirt and said side walls.
Claim 2
Dependent Claim
177 words
A nozzle for a vacuum cleaner, comprising a hollow nozzle body having means for connecting the vacuum pipe of a vacuum cleaner thereto, a side of the nozzle body which is turned away from the vacuum pipe connecting means having an opening therein, and an insert in the nozzle body closing a portion of such opening, said insert having a transverse bottom plate and upstanding side walls, the outer area of the insert being covered with a brush cover which extends across the bottom plate outwardly thereof and up along the side walls and a lid-shaped upper part clamping the brush cover downwardly upon the upper edge of the side walls of said insert, wherein said insert has a cup-shaped body and the upper edges of the side walls have a plurality of sawtooth projections, and the lid-shaped upper part has a downwardly extending skirt which has a plurality of projections so as to interdigitate with the projections on the side walls and to clamp the edges of the brush between said skirt and said side walls.
Claim 3
Dependent Claim
20 words
A nozzle according to claim 1, wherein the insert is installed so as to be removable from the nozzle body.
Claim 4
Dependent Claim
90 words
A nozzle according to claim 1, wherein said projections on said skirt comprise a plurality of thin radially inwardly-directed Ribs on the inner surface of the skirt, said ribs extending parallel to the axis of the skirt and being spaced so that when the lid-shaped upper part is assembled on the insert with the upstanding edge portions of the brush cover therebetween, the ribs on the skirt and the saw-tooth projections on the upper edge of the side walls of the body are interdigitated and clamp the brush cover therebetween.
Claim 5
Dependent Claim
56 words
A nozzle according to claim 1, wherein the lid-shaped upper part forms part of the insert and comprises an upstanding central stem which is received within a critical passage in the body of the nozzle, and comprising interfitting locking formations on said stem and the wall of the passage whereby to hold the insert in place.
Claim 6
Dependent Claim
46 words
A nozzle according to claim 4, wherein the passage extends through the upper surface of the body, and the upper end of the stem extends upwardly through the passage to be exposed in the form of a button protruding upwardly from the body of the nozzle.
Claim 7
Dependent Claim
47 words
A nozzle according to claim 4, wherein the interlocking formations comprise radially inwardly generally wedge-shaped projections on the inner wall of the passage through the body of the nozzle, and generally similarly shaped radially outwardly open seats in the wall of the stem which receive such projections.
Claim 8
Dependent Claim
53 words
A nozzle according to claim 1, wherein the insert covers the entire area of the opening in the nozzle body at the front thereof, and comprising a nozzle port in the nozzle body behind the insert, said nozzle port being connected to the means for connecting a vacuum pipe to the nozzle body.
Claim 9
Dependent Claim
61 words
A nozzle according to claim 1, wherein the brush cover includes a resilient liner underlying the portion of the brush cover which lies outwardly exposed, the brush having a plurality of closely-spaced short bristles which are all pointed in the same direction and are tilted in a direction which is disposed at an angle to the longitudinal axis of the insert.
Claim 10
Dependent Claim
97 words
A nozzle according to claim 8, wherein the insert covers the entire area of the opening in the nozzle body at the front thereof, and comprising a nozzle port in the nozzle body behind the insert, said nozzle port being connected to the means for connecting a vacuum pipe to the nozzle body; and wherein the insert is installed in the body of the nozzle in such manner that the tips of the bristles of the brush cover point in the direction of the vacuum port in the direction of pulling of the vacuum nozzle in use.
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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) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |