US3769707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prophy attachment for dental contra-angle
Assignee: Individual
•
Filing: 1972-05-11
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Granted: 1973-11-06
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Expires: 1992-05-11
Abstract
Abstract A prophy attachment is described for snapping onto a contraangle for enabling the dentist to polish or abrasively clean a patient''s teeth. The prophy attachment has a cavity formed therein for receiving prophy paste from a source. A prophy shaft extends through the cavity with one end connectable to the output shaft of the contra-angle and the other end for receiving a hollow prophy paste cup. A passageway extends through the attachment shaft with an opening in the cavity and another opening at the hollow prophy paste cup. Vanes are affixed to the attachment shaft for forcing prophy paste into the passageway and into the prophy cup as the shaft is rotated by the contra-angle.
Inventors
- 👤 J Condon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:19
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/005; A61C1/00; A61C1/08; A61C1/087
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
119 words
A prophy attachment for a dental contra-angle having a housing with an input shaft and an output shaft interconnected through a right angle drive, said prophy attachment comprising: a body attachable to the contra-angle housing; a prophy shaft rotatably mounted in the body having one end operatively connectable to the contra-angle output shaft for rotating the prophy shaft in response to the rotation of the output shaft; said prophy shaft having an opposite end extending from the body for receiving a hollow prophy cup thereon; and said prophy shaft having a passageway formed therein having an opening for communicating with the hollow prophy cup to enable prophy paste to flow therethrough into the interior of the hollow prophy cup.
Claim 2
Dependent Claim
119 words
A prophy attachment for a dental contra-angle having a housing with an input shaft and an output shaft interconnected through a right angle drive, said prophy attachment comprising: a body attachable to the contra-angle housing; a prophy shaft rotatably mounted in the body having one end operatively connectable to the contra-angle output shaft for rotating the prophy shaft in response to the rotation of the output shaft; said prophy shaft having an opposite end extending from the body for receiving a hollow prophy cup thereon; and said prophy shaft having a passageway formed therein having an opening for communicating with the hollow prophy cup to enable prophy paste to flow therethrough into the interior of the hollow prophy cup.
Claim 3
Dependent Claim
55 words
The prophy attachment as defined in claim 1 wherein the body has a cavity formed therein for receiving prophy paste and wherein the prophy shaft passageway has a radially extending opening communicating with the body cavity to enable prophy paste to flow from the cavity through the passageway to the interior of the prophy cup.
Claim 4
Dependent Claim
32 words
The prophy paste attachment as defined in claim 2 further comprising means responsive to the rotation of the output shaft for pumping the prophy paste from the body cavity into the passageway.
Claim 5
Dependent Claim
49 words
The prophy paste attachment as defined in claim 3 wherein the directing means includes a vane affixed to the prophy paste shaft adjacent the passageway opening communicating with and projecting into the cavity for directing prophy paste from the cavity into the passageway as the prophy shaft is rotated.
Claim 6
Dependent Claim
33 words
The prophy paste attachment as defined in claim 2 wherein the body has a supply passageway formed therein communicating with the body cavity for supplying prophy paste from a source to the cavity.
Claim 7
Dependent Claim
34 words
The prophy paste attachment as defined in claim 1 wherein the body has a resilient socket for receiving a portion of the housing to enable the attachment to be removably snapped onto the contra-angle.
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) | 1976-11-05 | 1977-05-07 | 1977-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-05 | 1981-05-07 | 1981-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-05 | 1985-05-07 | 1985-11-06 | $7700.00 | Window Closed / Lapsed |