US3082530A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling and like tools
Assignee: Individual
•
Filing: 1960-09-28
•
Granted: 1963-03-26
•
Expires: 1980-09-28
Abstract
No abstract record available.
Inventors
- 👤 Hopf Paul
- 👤 Hopf Hermann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:04
CPC Classifications
A; A61; A61C; A61C3/00; A61C3/02; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17128; Y10T279/17136; Y10T279/17153
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
A TOOL FOR USE IN A HIGH-SPEED DENTAL HANDPIECE, COMPRISING AN ELONGATED SHANK OF CYLINDRICAL EXTERNAL CONFIGURATION FORMED WITH AN INSERTION END RECEIVABLE IN A CHUCK OF SAID HANDPIECE AND A WORKING HEAD RIGID WITH SAID SHANK OPPOSITE SAID INSERTION END, SAID SHANK BEING PROVIDED WITH AT LEAST ONE LONGITUDINAL AXIAL SLOT EXTENDING SUBSTANTIALLY FROM SAID INSERTION END OVER A MAJOR PART OF THE LENGTH OF SAID SHANK AND SUBDIVIDING IT INTO A PAIR OF RESILIENTLY DEFORMABLE LONGITUDINAL PORTIONS, SAID PORTIONS BEING CENTRIFUGALLY SPREADABLE UPON ROTATION OF SAID TOOL FOR FRICTIONAL ENGAGEMENT BY SAID CHUCK, SAID SLOT BEING OPEN AT DIAMETRICALLY OPPOSITE LOCATIONS OF SAID SHANK AND BEING BOUNDED BY SUBSTANTIALLY FLAT FACES PARALLEL TO AN AXIAL PLANE OF SAID SHANK.
Claim 2
Dependent Claim
121 words
A TOOL FOR USE IN A HIGH-SPEED DENTAL HANDPIECE, COMPRISING AN ELONGATED SHANK OF CYLINDRICAL EXTERNAL CONFIGURATION FORMED WITH AN INSERTION END RECEIVABLE IN A CHUCK OF SAID HANDPIECE AND A WORKING HEAD RIGID WITH SAID SHANK OPPOSITE SAID INSERTION END, SAID SHANK BEING PROVIDED WITH AT LEAST ONE LONGITUDINAL AXIAL SLOT EXTENDING SUBSTANTIALLY FROM SAID INSERTION END OVER A MAJOR PART OF THE LENGTH OF SAID SHANK AND SUBDIVIDING IT INTO A PAIR OF RESILIENTLY DEFORMABLE LONGITUDINAL PORTIONS, SAID PORTIONS BEING CENTRIFUGALLY SPREADABLE UPON ROTATION OF SAID TOOL FOR FRICTIONAL ENGAGEMENT BY SAID CHUCK, SAID SLOT BEING OPEN AT DIAMETRICALLY OPPOSITE LOCATIONS OF SAID SHANK AND BEING BOUNDED BY SUBSTANTIALLY FLAT FACES PARALLEL TO AN AXIAL PLANE OF SAID SHANK.
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) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |