US4906187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for scaling at the gum pocket
Assignee: KOICHI OKANO
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Filing: 1988-08-01
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Granted: 1990-03-06
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Expires: 2008-08-01
Abstract
Abstract A device for scaling sordes and tartars on the surface of teeth at the gum pocket having improved construction, in which there are provided a hand-piece for an ejection nozzle; a compressor for feeding pressurized air to the ejection nozzle at one end of the hand-piece; a conduit pipe for transporting the compressed air; a water sump; and a conduit for leading water from the water sump to the ejection nozzle, the compressed air being ejected from the ejecting nozzle of the hand-piece under a pressure of from 1 to 2 kg/cm 2 and in an ejecting quantity of from 6 to 9 l /min., and water being ejected together with the pressurized jet air in an ejecting quantity of from 10 to 30 cc/min. in the form of a spray jet.
Inventors
- 👤 Haruichi Amadera
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:48
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/02; A46; A46B; A46B11/00; A46B11/001; A46B11/002; A61C17/0202; A61C17/0205; A61C17/024; A46B2200/00; A46B2200/10; A46B2200/1066
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
146 words
A device for scaling sordes and tartars on the surface of teeth at the gum pocket, which comprises: a hand-piece including an ejection nozzle; a compressor for feeding compressed air to said ejection nozzle at one end of said hand-piece; a conduit pipe for transporting the compressed air; a water sump; a conduit for leading water from said water sump to said ejection nozzle; said compressed air being ejected from said ejecting nozzle of the hand-piece under a pressure of from 1 to 2 kg/cm 2 and in an ejecting quantity of from 6 to 9 1/min.; and venturi ejecting means for ejecting said water together with said compressed air in an ejecting quantity of from 10 to 30 cc/min. in the form of a pressurized air spray jet for exposing the surface of teeth at the gum pocket by separating the gingival from the teeth.
Claim 2
Independent Claim
146 words
A device for scaling sordes and tartars on the surface of teeth at the gum pocket, which comprises: a hand-piece including an ejection nozzle; a compressor for feeding compressed air to said ejection nozzle at one end of said hand-piece; a conduit pipe for transporting the compressed air; a water sump; a conduit for leading water from said water sump to said ejection nozzle; said compressed air being ejected from said ejecting nozzle of the hand-piece under a pressure of from 1 to 2 kg/cm 2 and in an ejecting quantity of from 6 to 9 1/min.; and venturi ejecting means for ejecting said water together with said compressed air in an ejecting quantity of from 10 to 30 cc/min. in the form of a pressurized air spray jet for exposing the surface of teeth at the gum pocket by separating the gingival from the teeth.
Claim 3
Dependent Claim
50 words
A scaling device as set forth in claim 1, wherein a pressurized air discharging port and a switch for opening and closing said discharge port are provided in one part of said hand-piece, ejection of the pressurized air and water from said nozzle being controllable by operation of said switch.
Claim 4
Dependent Claim
40 words
A scaling device according to claim 1, wherein a tooth brush is attached at the tip end of the beaked tube, and pressurized air and water are ejected from an ejection nozzle formed in one part of said tooth brush.
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) | 1993-03-05 | 1993-09-04 | 1994-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-05 | 1997-09-04 | 1998-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-05 | 2001-09-04 | 2002-03-06 | $7700.00 | Window Closed / Lapsed |