US3581439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Buff apparatus and method of manufacturing buffs
Assignee: Geoscience Instruments Corp
•
Filing: 1968-04-04
•
Granted: 1971-06-01
•
Expires: 1988-04-04
Abstract
Abstract An improved buff apparatus includes a stacked array of laminated poromeric sheets. The sheets are interlocked by directing wave energy in a direction transverse to the sheets to create and interface between contiguous layers characterized by plural localized fused areas.
Inventors
- 👤 Hans R Jacobsen
- 👤 Elmer W Jensen Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:06
CPC Classifications
B; B24; B24B; B24B1/00; B24D; B24D13/00; B24D13/02; B24D13/08
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
56 words
In combination in a buff arrangement, a plurality of sheets formed of a microporous and permeable coriaceous nonwoven sheet material comprising a urethane polymer reinforced with polyester, said sheets having an annular outer periphery and disposed in a stacked array, and a plurality of locally fused areas of said poromeric material interlocking each of said sheets.
Claim 2
Dependent Claim
56 words
In combination in a buff arrangement, a plurality of sheets formed of a microporous and permeable coriaceous nonwoven sheet material comprising a urethane polymer reinforced with polyester, said sheets having an annular outer periphery and disposed in a stacked array, and a plurality of locally fused areas of said poromeric material interlocking each of said sheets.
Claim 3
Dependent Claim
26 words
A combination as in claim 1 further comprising a slurry source, and means for translating slurry from said source to the periphery of said polyester-urethane sheets.
Claim 4
Dependent Claim
20 words
A combination as in claim 1 wherein the periphery of said sheets is treated to exhibit and increased surface area.
Claim 5
Independent Claim
52 words
A method for buffing a workpiece comprising interlocking a fused stacked array of microporous and permeable coriaceous nonwoven sheets comprising a urethane polymer reinforced with polyester, said sheets being of annular outer periphery, rotating said stacked sheets, and urging said workpiece into frictional engagement with the rotating outer periphery of said sheets.
Claim 6
Independent Claim
52 words
A method for buffing a workpiece comprising interlocking a fused stacked array of microporous and permeable coriaceous nonwoven sheets comprising a urethane polymer reinforced with polyester, said sheets being of annular outer periphery, rotating said stacked sheets, and urging said workpiece into frictional engagement with the rotating outer periphery of said sheets.
Claim 7
Dependent Claim
17 words
A method as in claim 4 further comprising directing a slurry toward the workpiece-stacked sheet peripheral interface.
References Cited (Backward Citations)
US3137107A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |