US4037369A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floor maintenance brush
Assignee: Individual
•
Filing: 1975-10-01
•
Granted: 1977-07-26
•
Expires: 1995-10-01
Abstract
Abstract A brush or pad having fibers of varying abrasive characteristics, the fibers of greater abrasive characteristics being located towards the center of the brush and the fibers of lesser abrasive characteristics being located towards the outer periphery of the brush.
Inventors
- 👤 Murray Robert Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:16
CPC Classifications
A; A47; A47L; A47L11/00; A47L11/40; A47L11/4036; A47L11/4038; A46; A46B; A46B9/00; A46B9/06; A47L11/02; A47L11/10; A47L11/14; A47L11/16; A47L11/164
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
85 words
A brush or pad having fibres of varying abrasive characteristics, the fibres of greater abrasive characteristics being located towards the centre of the brush and the fibres of lesser abrasive characteristics being located towards the outer periphery of the brush, the outermost annular tufts of fibres being constructed of pure bassine, the next inner annular tufts of fibre being constructed of a mixture of bassine and nylon filament and the innermost annular tufts being constructed of nylon filament, said nylon filament incorporating an abrasive grit.
Claim 2
Dependent Claim
85 words
A brush or pad having fibres of varying abrasive characteristics, the fibres of greater abrasive characteristics being located towards the centre of the brush and the fibres of lesser abrasive characteristics being located towards the outer periphery of the brush, the outermost annular tufts of fibres being constructed of pure bassine, the next inner annular tufts of fibre being constructed of a mixture of bassine and nylon filament and the innermost annular tufts being constructed of nylon filament, said nylon filament incorporating an abrasive grit.
Claim 3
Dependent Claim
31 words
A brush or pad as claimed in claim 1 wherein the fibres of greater abrasive characteristics are of larger diameter and the fibres of lesser abrasive characteristics are of smaller diameter.
Claim 4
Dependent Claim
20 words
A brush or pad as claimed in claim 1 wherein the varying abrasive fibres are disposed in distinct annular bands.
Claim 5
Dependent Claim
30 words
A brush or pad as claimed in claim 3 comprising at least one support strap placed between said annular tufts to provide support and constant relative position for said fibres.
Claim 6
Dependent Claim
23 words
A brush or pad as claimed in claim 4 comprising a further support strap placed around the periphery of the outermost annular tufts.
Claim 7
Dependent Claim
20 words
A brush or pad as claimed in claim 2 wherein the varying abrasive fibres are disposed in distinct annular bands.
Claim 8
Dependent Claim
30 words
A brush or pad as claimed in claim 6 comprising at least one support strap placed between said annular tufts to provide support and constant relative position for said fibres.
Claim 9
Dependent Claim
23 words
A brush or pad as claimed in claim 7 comprising a further support strap placed around the periphery of the outermost annular tufts.
Claim 10
Dependent Claim
82 words
A brush or pad comprising a substantially circular backing plate and fibres of varying diameter and abrasive characteristics secured to and projecting from one face of said plate, the larger diameter fibres being more abrasive and impregnated with abrasive particles, the larger diameter fibres being positioned in the central region of the brush, said fibres decreasing in diameter and abrasive characteristics radially outwardly on said plate, the least abrasive fibres being unimpregnated and disposed in the outer peripheral area of the brush.
Claim 11
Dependent Claim
82 words
A brush or pad comprising a substantially circular backing plate and fibres of varying diameter and abrasive characteristics secured to and projecting from one face of said plate, the larger diameter fibres being more abrasive and impregnated with abrasive particles, the larger diameter fibres being positioned in the central region of the brush, said fibres decreasing in diameter and abrasive characteristics radially outwardly on said plate, the least abrasive fibres being unimpregnated and disposed in the outer peripheral area of the brush.
Claim 12
Dependent Claim
29 words
A brush or pad as claimed in claim 9 comprising a support strap placed around the periphery of the outermost unimpregnated fibres to provide support for said outermost fibres.
References Cited (Backward Citations)
US959054A
Cited
US1206031A
Cited
US1093437A
Cited
US2196079A
Cited
US3072944A
Cited
US3605347A
Cited
US3758393A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |