Patent US3905080A successfully refreshed from Google Patents.
US3905080A
Expired / Lapsed
US
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Abrading devices
Assignee: Buckbee Mears Co
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Filing: 1974-02-04
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Granted: 1975-09-16
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Expires: 1994-02-04
Abstract
Abstract An improved abrading material and apparatus for utilizing an abrading drum is provided with the abrading material having nonclogging characteristics as well as improved cutting characteristics.
Inventors
- 👤 Herbert M Bond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:09
CPC Classifications
B; B24; B24D; B24D11/00; B24D11/001; B24D11/003; B24D9/00; B24D9/006; C; C23; C23F; C23F1/00; C23F1/02; C23F1/04; Y; Y10; Y10T; Y10T29/00; Y10T29/44
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
164 words
An abrading apparatus including a member for supporting a rotatable mandrel, a mandrel rotatably mounted on said member, means for rotating said mandrel, said mandrel operable for receiving an abrading drum of diameter D1, said mandrel having diameter D2 which is less than said diameter D1 to thereby provide clearance between said abrading drum and said mandrel to thereby allow said abrading drum to flex radially inward in response to a radial inward force on said abrading drum, said abrading drum having an elastomer surface located on the ends of said abrading drum that is sufficiently soft to expand radially outward under centrifugal force to thereby frictionally engage the inside of said abrading drum and an air gap between said ends of said abrasive drum that is sufficiently large so as to allow radial inward flexing of said drum in response to a radial inward force to said drum without producing engagement of said abrading drum with said elastomer surface on said abrading drum.
Claim 2
Dependent Claim
164 words
An abrading apparatus including a member for supporting a rotatable mandrel, a mandrel rotatably mounted on said member, means for rotating said mandrel, said mandrel operable for receiving an abrading drum of diameter D1, said mandrel having diameter D2 which is less than said diameter D1 to thereby provide clearance between said abrading drum and said mandrel to thereby allow said abrading drum to flex radially inward in response to a radial inward force on said abrading drum, said abrading drum having an elastomer surface located on the ends of said abrading drum that is sufficiently soft to expand radially outward under centrifugal force to thereby frictionally engage the inside of said abrading drum and an air gap between said ends of said abrasive drum that is sufficiently large so as to allow radial inward flexing of said drum in response to a radial inward force to said drum without producing engagement of said abrading drum with said elastomer surface on said abrading drum.
Claim 3
Dependent Claim
29 words
The invention of claim 1 wherein there is a diametrical clearance between said drum and said diameter of said mandrel on the order of about .010 of an inch.
Claim 4
Dependent Claim
57 words
The invention of claim 1 wherein said abrading drum comprises a metallic base material having a plurality of metallic cutting teeth projecting therefrom, said teeth characterized by irregular sizes and shapes, said plurality of teeth spaced randomly throughout said material, said teeth further characterized by covering less than 10% of the area of said metallic base material.
Claim 5
Dependent Claim
29 words
The invention of claim 3 wherein said elastomer has a durometer ready which ranges from about 18 to 20 on scale A as defined by ASTM standard ASTMD 2240-68.
References Cited (Backward Citations)
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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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |