Patent US3619904A successfully refreshed from Google Patents.
US3619904A
Expired / Lapsed
US
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Chuck control for dental drills and the like
Assignee: Atlas Copco AB
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Filing: 1968-12-19
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Granted: 1971-11-16
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Expires: 1988-12-19
Abstract
Abstract A CHUCK CONTROL MECHANISM FOR A DENTAL DRILL OR OTHER TOOL HAVING A TUBULAR HOUSING CONSISTING OF A RING MEMBER ROTATABLY MOUNTED AT THE OUTSIDE OF THE HOUSING AND AXIALLY FIXED IN THE HOUSING AND ARRNAGED UPON ROTATION IN ONE DIRECTION TO TIGHTEN THE GRIP OF THE CHUCK AND UPON ROTATION IN THE OPPOSITE DIRECTION TO DISENGAGE THE CHECK FROM THE SHANK OF A WORKING IMPLEMENT WHICH MAY BE ANY DENTAL TOOL OR OTHER IMPLEMENT DRIVEN BY A SHAFT MOUNTED FOR RORATION IN THE HOUSING AND ENGAGEABLE WITH THE CHUCK.
Inventors
- 👤 Karl Ivar Lundgren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:45
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/08; A61C1/14; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17411; Y10T279/17529; Y10T279/17547
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |