Patent US3755847A successfully refreshed from Google Patents.
US3755847A
Expired / Lapsed
US
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Brush
Assignee: Leifheit International GmbH
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Filing: 1971-08-18
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Granted: 1973-09-04
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Expires: 1991-08-18
Abstract
Abstract A cylindrical brush including a rigid support member and a flexible bristle support carrier provided with a plurality of bristles of a synthetic plastic material. The support member and support carrier are provided with means for connecting the members with one another.
Inventors
- 👤 J Liebscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:09
CPC Classifications
A; A46; A46B; A46B7/00; A46B7/04; A46B3/00; A46B3/005
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
200 words
A roller brush comprising, in combination, a cylindrical support member having a cylindrical outer face; a single undercut groove in said peripheral outer face of said cylindrical support member extending in axial direction thereof and having undercut side faces; a flexible rectangular bristle carrier having a length identical to the length of said cylindrical support member in axial direction thereof and having a width substantially corresponding to the circumference of said cylindrical support; outwardly projecTing bristles arranged on one face of said flexible rectangular bristle carrier; and elongated undercut projections along those edges of said flexible rectangular bristle carrier which extend in direction of the length of the said bristle carrier, said projections extending outwardly from the other face of said flexible rectangular bristle carrier, whereby said flexible rectangular bristle carrier can be bent into a tubular shape with said elongated projections abutting against each other and slipped over said cylindrical carrier member with said projections located in said single undercut groove engaging the undercut faces thereof so that said flexible bristle carrier is held in its tubular shape on said cylindrical carrier member by said elongated undercut projections engaging the same single undercut groove in the cylindrical carrier member.
Claim 2
Dependent Claim
200 words
A roller brush comprising, in combination, a cylindrical support member having a cylindrical outer face; a single undercut groove in said peripheral outer face of said cylindrical support member extending in axial direction thereof and having undercut side faces; a flexible rectangular bristle carrier having a length identical to the length of said cylindrical support member in axial direction thereof and having a width substantially corresponding to the circumference of said cylindrical support; outwardly projecTing bristles arranged on one face of said flexible rectangular bristle carrier; and elongated undercut projections along those edges of said flexible rectangular bristle carrier which extend in direction of the length of the said bristle carrier, said projections extending outwardly from the other face of said flexible rectangular bristle carrier, whereby said flexible rectangular bristle carrier can be bent into a tubular shape with said elongated projections abutting against each other and slipped over said cylindrical carrier member with said projections located in said single undercut groove engaging the undercut faces thereof so that said flexible bristle carrier is held in its tubular shape on said cylindrical carrier member by said elongated undercut projections engaging the same single undercut groove in the cylindrical carrier member.
Claim 3
Dependent Claim
14 words
A brush as defined in claim 1, wherein said cylindrical support member is hollow.
Claim 4
Dependent Claim
30 words
A brush as defined in claim 1, wherein said bristle carrier and said bristles are unitary, and wherein at least the bristles carrier and bristles are of synthetic plastic material.
Claim 5
Dependent Claim
30 words
A brush as defined in claim 1, wherein the other of said sides is provided with a plurality of grooves which extend at least generally parallel to said elongated projections.
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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |