US3315358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a dental bridge
Assignee: Westward Dental Products Co
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Filing: 1963-10-02
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Granted: 1967-04-25
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Expires: 1983-10-02
Abstract
No abstract record available.
Inventors
- 👤 Brecht Clara Anna
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:54
CPC Classifications
A; A61; A61C; A61C13/00; A61C13/0003; A61C13/225; A61C13/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
254 words
A METHOD OF MAKING A DENTAL BRIDGE OR THE LIKE, WHICH CONSISTS IN BUILDING UP A FORM FOR THE BRIDGE AT LEAST PARTLY OF WAX, PROVIDING AN ARTIFICIAL TOOTH HAVING AT LEAST ONE HEADED PRONG ON THE BACK THEREOF, PROVIDING A BLOCK OF CONSUMABLE PLASTIC HAVING AT LEAST ONE KEYHOLE SLOT OPENING THROUGH THE FORWARD FACE THEREOF, FITTING THE BLOCK TO THE BACK OF THE TOOTH BY INSERTING THE HEADED PRONG INTO THE SLOT AND THEN EFFECTING SLIGHT RELATIVE DISPLACEMENT OF THE TOOTH AND BLOCK TO ENGAGE THE PRONG WITHIN THE NARROWER PART OF THE SLOT, INCORPORATING THE TOOTH AND PLASTIC BLOCK IN THE WAX, SHAPING THE FORM INCLUDING THE TOOTH TO FIT THE MOUTH OF THE PATIENT, REMOVING THE TOOTH FROM THE PLASTIC BLOCK WHILE LEAVING THE BLOCK EMBEDDED IN THE WAX, BY EFFECTING SLIGHT RELATIVE DISPLACEMENT OF THE TOOTH AND BLOCK TO MOVE THE PRONG INTO THE WIDER PART OF THE SLOT TO PERMIT MOVEMENT OF THE HEADED PRONG OUT OF THE SLOT INVESTING THE FORM, IN CLUDING THE BLOCK IN A SETTABLE MOLD MATERIAL, MELTING OUT THE WAX AND PLASTIC BLOCK, CASTING METAL IN THE MOLD SO AS TO PROVIDE A METAL SEAT TO FIT THE REMOVED TOOTH AND INCLUDING A KEYHOLE SLOT TO RECEIVE THE PRONG THEREON, AND ANCHORING THE TOOTH TO SAID SEAT BY INSERTING THE PRONG INTO THE WIDER PART OF THE KEYHOLE SLOT AND THEN EFFECTING SLIGHT RELATIVE DISPLACEMENT OF THE TOOTH AND THE METAL SEAT TO ENGAGE THE PRONG WITHIN THE NARROWER PART OF THE SLOT.
Claim 2
Independent Claim
254 words
A METHOD OF MAKING A DENTAL BRIDGE OR THE LIKE, WHICH CONSISTS IN BUILDING UP A FORM FOR THE BRIDGE AT LEAST PARTLY OF WAX, PROVIDING AN ARTIFICIAL TOOTH HAVING AT LEAST ONE HEADED PRONG ON THE BACK THEREOF, PROVIDING A BLOCK OF CONSUMABLE PLASTIC HAVING AT LEAST ONE KEYHOLE SLOT OPENING THROUGH THE FORWARD FACE THEREOF, FITTING THE BLOCK TO THE BACK OF THE TOOTH BY INSERTING THE HEADED PRONG INTO THE SLOT AND THEN EFFECTING SLIGHT RELATIVE DISPLACEMENT OF THE TOOTH AND BLOCK TO ENGAGE THE PRONG WITHIN THE NARROWER PART OF THE SLOT, INCORPORATING THE TOOTH AND PLASTIC BLOCK IN THE WAX, SHAPING THE FORM INCLUDING THE TOOTH TO FIT THE MOUTH OF THE PATIENT, REMOVING THE TOOTH FROM THE PLASTIC BLOCK WHILE LEAVING THE BLOCK EMBEDDED IN THE WAX, BY EFFECTING SLIGHT RELATIVE DISPLACEMENT OF THE TOOTH AND BLOCK TO MOVE THE PRONG INTO THE WIDER PART OF THE SLOT TO PERMIT MOVEMENT OF THE HEADED PRONG OUT OF THE SLOT INVESTING THE FORM, IN CLUDING THE BLOCK IN A SETTABLE MOLD MATERIAL, MELTING OUT THE WAX AND PLASTIC BLOCK, CASTING METAL IN THE MOLD SO AS TO PROVIDE A METAL SEAT TO FIT THE REMOVED TOOTH AND INCLUDING A KEYHOLE SLOT TO RECEIVE THE PRONG THEREON, AND ANCHORING THE TOOTH TO SAID SEAT BY INSERTING THE PRONG INTO THE WIDER PART OF THE KEYHOLE SLOT AND THEN EFFECTING SLIGHT RELATIVE DISPLACEMENT OF THE TOOTH AND THE METAL SEAT TO ENGAGE THE PRONG WITHIN THE NARROWER PART OF THE SLOT.
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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |