Patent US4611992A successfully refreshed from Google Patents.
US4611992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spray guard for dental tool
Assignee: Lifetech Systems Inc
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Filing: 1984-11-02
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Granted: 1986-09-16
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Expires: 2004-11-02
Abstract
Abstract An anti-splash device for attachment to a dental tool that delivers an aqueous fluid from a nozzle, which comprises an inverted U-shaped member having a base and integral, opposed legs depending therefrom, one of said legs having a bore extending therethrough and operable to secure said member to the nozzle of said dental tool, said bore providing access to the space between said opposed legs.
Inventors
- 👤 Oddvin Lokken
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:14
CPC Classifications
A; A61; A61C; A61C17/00; A61C17/02; A61C17/0202
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
104 words
A dental tool for delivery of an aqueous fluid to teeth, comprising an elongated nozzle provided with an aqueous fluid inlet at one end and an aqueous fluid outlet at the other end, and an inverted U-shaped member having a base and integral, opposed legs depending therefrom, one of said legs having a bore extending therethrough, said nozzle being removably inserted in said bore with said nozzle outlet facing said other leg, whereby when the U-shaped member is placed over a tooth being treated, the leg closest to the operator of the tool acts to prevent material from splashing out of the patient's mouth.
Claim 2
Dependent Claim
104 words
A dental tool for delivery of an aqueous fluid to teeth, comprising an elongated nozzle provided with an aqueous fluid inlet at one end and an aqueous fluid outlet at the other end, and an inverted U-shaped member having a base and integral, opposed legs depending therefrom, one of said legs having a bore extending therethrough, said nozzle being removably inserted in said bore with said nozzle outlet facing said other leg, whereby when the U-shaped member is placed over a tooth being treated, the leg closest to the operator of the tool acts to prevent material from splashing out of the patient's mouth.
Claim 3
Dependent Claim
14 words
Apparatus according to claim 1, wherein said member is made of transparent flexible plastic.
Claim 4
Dependent Claim
17 words
Apparatus according to claim 1, wherein said base has a magnifying lens means for viewing said space.
Claim 5
Dependent Claim
143 words
A dental tool comprising an elongated nozzle having outlet means at one end and inlet means at the other end and at one side thereof, first conduit means connected to said inlet means at said side and extending transversely away from said nozzle, second conduit means connected to said inlet means at said other end, and an inverted U-shaped member having a base and integral opposed legs depending therefrom, one of said legs having a bore extending therethrough and a groove lying in the exterior face of said leg and extending from the free end of said leg to said bore, said nozzle being removably inserted in said bore with said nozzle outlet facing said other leg and said first conduit means being removably inserted in said groove, whereby said U-shaped member is removably secured to said nozzle and said first conduit means.
Claim 6
Dependent Claim
143 words
A dental tool comprising an elongated nozzle having outlet means at one end and inlet means at the other end and at one side thereof, first conduit means connected to said inlet means at said side and extending transversely away from said nozzle, second conduit means connected to said inlet means at said other end, and an inverted U-shaped member having a base and integral opposed legs depending therefrom, one of said legs having a bore extending therethrough and a groove lying in the exterior face of said leg and extending from the free end of said leg to said bore, said nozzle being removably inserted in said bore with said nozzle outlet facing said other leg and said first conduit means being removably inserted in said groove, whereby said U-shaped member is removably secured to said nozzle and said first conduit means.
Claim 7
Dependent Claim
22 words
Apparatus according to claim 4, wherein said groove is perpendicular to said bore and said bore is perpendicular to said exterior face.
Claim 8
Dependent Claim
14 words
Apparatus according to claim 5, wherein said member is made of transparent flexible plastic.
Claim 9
Dependent Claim
37 words
Apparatus according to claim 4, wherein said first conduit is operable to deliver water to said nozzle and said second conduit is operable to deliver a mixture of air and a dental cleaning powder to said nozzle.
Claim 10
Dependent Claim
17 words
Apparatus according to claim 4, wherein said base has a magnifying lens means for viewing said space.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-09-15 | 1990-03-17 | 1990-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-09-15 | 1994-03-17 | 1994-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-09-15 | 1998-03-17 | 1998-09-16 | $7700.00 | Window Closed / Lapsed |