Patent US4222204A successfully refreshed from Google Patents.
US4222204A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Holder for an abrasive plate
Assignee: Individual
•
Filing: 1979-06-18
•
Granted: 1980-09-16
•
Expires: 1999-06-18
Abstract
Abstract A holder for an abrasive plate wherein a rigid plate is provided with a dress of abrasive grit on its contact face; a head on a shaft is provided with a peripheral flange defining a seat for a pad of magnetic material which is magnetically attracted to the seat defined by the flange and magnetically attracts the abrasive plate.
Inventors
- 👤 Robert L. Benner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:59
CPC Classifications
B; B24; B24D; B24D9/00; B24D9/08; B24D9/085
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
97 words
A holder for an abrasive plate comprising, (a) a shaft for rotating a holder, (b) an enlargement on the shaft defining a holder for an abrasive plate, (c) a peripheral flange on the enlargement defining a concavity on the enlargement, (d) a concavity on the enlargement defining a seat, (e) a pad positioned in the concavity, (f) the pad composed of high friction, plastic, flexible, shock absorbing material, (g) a dispersion of magnetized material in the pad, (h) a plate on top of the pad, (i) an abrasive dress on the plate secured thereto by an adhesive.
Claim 2
Dependent Claim
97 words
A holder for an abrasive plate comprising, (a) a shaft for rotating a holder, (b) an enlargement on the shaft defining a holder for an abrasive plate, (c) a peripheral flange on the enlargement defining a concavity on the enlargement, (d) a concavity on the enlargement defining a seat, (e) a pad positioned in the concavity, (f) the pad composed of high friction, plastic, flexible, shock absorbing material, (g) a dispersion of magnetized material in the pad, (h) a plate on top of the pad, (i) an abrasive dress on the plate secured thereto by an adhesive.
Claim 3
Dependent Claim
50 words
A holder for an abrasive plate according to claim 1, and (a) the shaft having a threaded end, (b) means to attach the threaded end of the shaft to the enlargement, (c) both the pad and the plate provided with a central opening for access to the means to attach.
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) | 1983-09-16 | 1984-03-17 | 1984-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-16 | 1988-03-17 | 1988-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-16 | 1992-03-17 | 1992-09-16 | $7700.00 | Window Closed / Lapsed |