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Patent US3333320A successfully refreshed from Google Patents.
US3333320A
Expired / Lapsed
US
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Fluid pressure device for ejecting burs from the chucks of dental handpieces
Assignee: Individual
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Filing: 1965-09-16
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Granted: 1967-08-01
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Expires: 1985-09-16
Abstract
No abstract record available.
Inventors
- 👤 Robert B Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:41
CPC Classifications
A; A61; A61C; A61C1/00; A61C1/08; A61C1/14; G; G01; G01K; G01K7/00; G01K7/02; G01K7/023; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49815; Y10T29/49822; Y10T29/53; Y10T29/53704; Y10T29/53796; Y10T29/5383
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
APPARATUS FOR USE IN REMOVING A ROTARY DENTAL TOOL FROM THE CHUCK OF THE HEAD OF A DENTAL HANDPIECE, COMPRISING A CRADLE FOR RECEIVING THE HEAD OF A HANDPIECE, A TOOL-RECEIVING CAPSULE COMMUNICATING WITH ONE END OF THE CRADLE, A FLUID PRESSURE PISTON AND CYLINDER DEVICE AT THE OPPOSITE END OF THE CRADLE HAVING A PISTON ROD POSITIONED TO PROJECT FROM THE CYLINDER INTO THE CHUCK OF A HANDPIECE HEAD BEHIND A TOOL THEREIN, AND FLUID PRESSURE CONTROL MEANS FOR ACTUATING THE PISTON AND THUS THE PISTON ROD TO EJECT A TOOL FROM THE CHUCK OF A HANDPIECE HEAD INTO THE TOOL-RECEIVING CAPSULE.
Claim 2
Dependent Claim
103 words
APPARATUS FOR USE IN REMOVING A ROTARY DENTAL TOOL FROM THE CHUCK OF THE HEAD OF A DENTAL HANDPIECE, COMPRISING A CRADLE FOR RECEIVING THE HEAD OF A HANDPIECE, A TOOL-RECEIVING CAPSULE COMMUNICATING WITH ONE END OF THE CRADLE, A FLUID PRESSURE PISTON AND CYLINDER DEVICE AT THE OPPOSITE END OF THE CRADLE HAVING A PISTON ROD POSITIONED TO PROJECT FROM THE CYLINDER INTO THE CHUCK OF A HANDPIECE HEAD BEHIND A TOOL THEREIN, AND FLUID PRESSURE CONTROL MEANS FOR ACTUATING THE PISTON AND THUS THE PISTON ROD TO EJECT A TOOL FROM THE CHUCK OF A HANDPIECE HEAD INTO THE TOOL-RECEIVING CAPSULE.
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) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |