US3307300A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Abrasive disk unit
Assignee: Individual
•
Filing: 1964-10-01
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Granted: 1967-03-07
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Expires: 1984-10-01
Abstract
No abstract record available.
Inventors
- 👤 Field Albert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:29
CPC Classifications
B; B24; B24D; B24D9/00; B24D9/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
172 words
AN ABRASIVE DISK UNIT ADAPTED TO BE SECURED TO A MANDREL HAVING AN INTERNALLY THREADED BORE THEREIN, COMPRISING A SEMI-RIGID DISK HAVING A POLYGONAL APERTURE OF A PRESET CONFIGURATION IN THE CENTER THEREOF, A SCREW HAVING A HEAD PORTION AND A THREADED PORTION ADAPTED TO BE RECEIVED IN THE THREADED BORE, SAID HEAD PORTION HAVING AN ENLARGED FLAT HEAD WHICH IS LARGER IN SIZE THAN SAID APERTURE, A POLYGONAL BOSS ON SAID SCREW ADJACENT SAID FLAT HEAD ON THE SAME SIDE THEREOF AS SAID THREADED PORTION, SAID POLYGONAL BOSS HAVING SAID PRESET CONFIGURATION SO THAT SAID THREADED PORTION CAN BE INSERTED THROUGH SAID APERTURE TO SECURE SAID SCREW TO SAID SEMI-RIGID DISK, A AGAINST RELATIVE ANGULAR MOVEMENT THEREBETWEEN AND WITH SAID HEAD FLAT ADJACENT ONE SIDE OF SAID SEMI-RIGID DISK, A DISK OF RELATIVELY RESILIENT MATERIAL HAVING ONE SIDE SECURED TO SAID SEMI-RIGID DISK, AND AN ABRASIVE COATED CLOTH DISK SECURED TO SAID RESILIENT DISK FOR COOPERATION THEREWITH TO REMOVE PARTICLES OF A WORK PIECE WHICH MAY COLLECT ON SAID ABRASIVE DISK.
Claim 2
Dependent Claim
172 words
AN ABRASIVE DISK UNIT ADAPTED TO BE SECURED TO A MANDREL HAVING AN INTERNALLY THREADED BORE THEREIN, COMPRISING A SEMI-RIGID DISK HAVING A POLYGONAL APERTURE OF A PRESET CONFIGURATION IN THE CENTER THEREOF, A SCREW HAVING A HEAD PORTION AND A THREADED PORTION ADAPTED TO BE RECEIVED IN THE THREADED BORE, SAID HEAD PORTION HAVING AN ENLARGED FLAT HEAD WHICH IS LARGER IN SIZE THAN SAID APERTURE, A POLYGONAL BOSS ON SAID SCREW ADJACENT SAID FLAT HEAD ON THE SAME SIDE THEREOF AS SAID THREADED PORTION, SAID POLYGONAL BOSS HAVING SAID PRESET CONFIGURATION SO THAT SAID THREADED PORTION CAN BE INSERTED THROUGH SAID APERTURE TO SECURE SAID SCREW TO SAID SEMI-RIGID DISK, A AGAINST RELATIVE ANGULAR MOVEMENT THEREBETWEEN AND WITH SAID HEAD FLAT ADJACENT ONE SIDE OF SAID SEMI-RIGID DISK, A DISK OF RELATIVELY RESILIENT MATERIAL HAVING ONE SIDE SECURED TO SAID SEMI-RIGID DISK, AND AN ABRASIVE COATED CLOTH DISK SECURED TO SAID RESILIENT DISK FOR COOPERATION THEREWITH TO REMOVE PARTICLES OF A WORK PIECE WHICH MAY COLLECT ON SAID ABRASIVE DISK.
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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |