US3747152A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cleaning brush with dust removing and collecting means
Assignee: Nippon Seal Co Ltd
•
Filing: 1972-02-28
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Granted: 1973-07-24
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Expires: 1992-02-28
Abstract
Abstract A cleaning brush includes a casing having a dust collecting compartment. An arcuate outer brush is fixed to the casing. An arcuate inner brush is movable with respect to said outer brush. Short bristles are implanted on the outer surface of the inner brush and lean toward the outer brush. Short bristles are also implanted on the inner surface of the outer brush and lean in the same direction as the bristles of the inner brush.
Inventors
- 👤 T Tsuruzawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:08
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/32; A47L11/33
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
285 words
A cleaning brush which comprises at least one pair of a fixed arcuate outer brush member and a correspondingly arcuate inner brush member which is movable toward and away from the outer brush member and in sliding contact therewith, short bristles closely implanted on the outer surface of the inner brush member to form a cleaning brush surface, short bristles closely implanted on the inner surface of the outer brush member to form a dust removing surface, the bristles on the inner brush member being leaned in the direction of the outer brush member, the bristles on the outer brush member being leaned in the same direction as that of the bristles on the inner brush member, a casing for holding the inner and outer brush members, and a dust collecting compartment formed within the casing, the arrangement being such that when the inner brush member is in a first positioned furthest away from the outer brush member the cleaning brush surface of the inner brush member is exposed and engageable with an article to be cleaned for brush-cleaning and when the inner brush member moves from the first position toward the outer brush member into a second position the bristles on the inner brush member slide on and in contact with the bristles on the outer brush member and when the inner brush member moves back away from the outer brush member from said second position to the first position the bristles on the outer brush member engage with the bristles on the inner brush member so that the dust retained among the bristles on the inner brush member is combed off and by and transferred into the bristles on the outer brush member.
Claim 2
Dependent Claim
285 words
A cleaning brush which comprises at least one pair of a fixed arcuate outer brush member and a correspondingly arcuate inner brush member which is movable toward and away from the outer brush member and in sliding contact therewith, short bristles closely implanted on the outer surface of the inner brush member to form a cleaning brush surface, short bristles closely implanted on the inner surface of the outer brush member to form a dust removing surface, the bristles on the inner brush member being leaned in the direction of the outer brush member, the bristles on the outer brush member being leaned in the same direction as that of the bristles on the inner brush member, a casing for holding the inner and outer brush members, and a dust collecting compartment formed within the casing, the arrangement being such that when the inner brush member is in a first positioned furthest away from the outer brush member the cleaning brush surface of the inner brush member is exposed and engageable with an article to be cleaned for brush-cleaning and when the inner brush member moves from the first position toward the outer brush member into a second position the bristles on the inner brush member slide on and in contact with the bristles on the outer brush member and when the inner brush member moves back away from the outer brush member from said second position to the first position the bristles on the outer brush member engage with the bristles on the inner brush member so that the dust retained among the bristles on the inner brush member is combed off and by and transferred into the bristles on the outer brush member.
Claim 3
Dependent Claim
83 words
A cleaning brush as claimed in claim 1, wherein there are provided two pairs each comprising the fixed outer brush member and movable inner brush member so that these pairs are symmetrical to each other and form a unitary structure, wherein the arrangement and construction of inner and outer brush members in the first pair are identical to those in the second pair, but the direction of inclination of the bristles in the first pair is opposite to that in the second pair.
Claim 4
Dependent Claim
46 words
A cleaning brush according to claim 2, wherein said two arcuate inner brush members are connected together in side-by-side relation to form an inner semicylindrical body, while the outer brush members are connected respectively to the lower ends of the casing surrounding the inner semicylindrical body.
Claim 5
Dependent Claim
31 words
A cleaning brush according to claim 1, wherein there is provided a stopper means to stop the movement of the inner brush member at each of said first and second positions.
Claim 6
Dependent Claim
51 words
A cleaning brush according to claim 1, wherein the casing has a front end wall and back end wall, each provided along its inner lower surface with an arcuate guide groove within which a corresponding arcuate projection provided at the end of the inner brush member is engageable for sliding movement.
Claim 7
Dependent Claim
64 words
A cleaning brush according to claim 5 wherein an arcuate guide wall having the same curvature as that of the inner and outer brush members is connected at its end with the casing to extend along and inwardly apart from the outer brush member, and the inner brush member is movable in the space between the outer brush member and the arcuate guide wall.
Claim 8
Dependent Claim
49 words
A cleaning brush according to claim 6 wherein there is provided on the inner brush member a projection which is engageable with a stopper provided on the guide wall and with the lower free end of the outer brush member to stop the movement of the inner brush member.
Claim 9
Dependent Claim
42 words
A cleaning brush according to claim 3 wherein an end plate is provided at one end of the inner semicylindrical body, said end plate being partly cut-off to provide a shoulder which is engageable with a stopper means formed on the casing.
Claim 10
Dependent Claim
43 words
A cleaning brush according to claim 3 wherein the outer brush members are connected respectively to the lower ends of the casing through bottom brush members, on the outer Surface of which are closely implanted short bristles inclined toward the inner semicylindrical body.
Claim 11
Dependent Claim
27 words
A cleaning brush according to claim 8 wherein the end plate of the inner semicylindrical body is rotatably connected to the corresponding end wall of the casing.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
FR643295A
Cited
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Cited
DE2060377A1
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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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |