Patent US4281573A successfully refreshed from Google Patents.
Patent US5120219A successfully refreshed from Google Patents.
US5120219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental care apparatus
Assignee: Individual
•
Filing: 1990-04-24
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Granted: 1992-06-09
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Expires: 2010-04-24
Abstract
Abstract This apparatus is of the type comprising a hand instrument (5) adapted to perform a sandblasting operation by projecting a powder onto the teeth, combined with a rinsing operation by projecting a liquid. According to the invention, the powder (300) is contained in a first receptacle (3) in which it is suspended in compressed air, whereas the rinsing liquid (400) is contained in a second receptacle (4), and there is provided a single compressor (1) which supplies compressed air to the two receptacles (3, 4), conduits (30, 40) transferring respectively the powder suspended in the compressed air and the liquid to the hand instrument (5), from where the two flows of treatment are projected by means of an intrabuccal cannula (51).
Inventors
- 👤 Bertrand De Farcy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 16:30
CPC Classifications
A; A61; A61C; A61C3/00; A61C3/02; A61C3/025
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
120 words
A dental care apparatus comprising a hand instrument (5) adapted to perform a sandblasting operation by projecting a powder (300) onto the teeth along with a liquid (400) for rinsing, the apparatus comprising a first receptacle (3) for receipt of a powder to be projected, a second receptacle (4) for receipt of a liquid to be projected, first and second conduit means for separately connecting said first and second receptacles, respectively, to said hand instrument, a portable air compressor (1), and means (2) for supplying compressed air from said compressor simultaneously to both said receptacles for conveying powder mixed with compressed air from said first receptacle and liquid from said second receptacle to said hand instrument for simultaneous projection therefrom.
Claim 2
Dependent Claim
120 words
A dental care apparatus comprising a hand instrument (5) adapted to perform a sandblasting operation by projecting a powder (300) onto the teeth along with a liquid (400) for rinsing, the apparatus comprising a first receptacle (3) for receipt of a powder to be projected, a second receptacle (4) for receipt of a liquid to be projected, first and second conduit means for separately connecting said first and second receptacles, respectively, to said hand instrument, a portable air compressor (1), and means (2) for supplying compressed air from said compressor simultaneously to both said receptacles for conveying powder mixed with compressed air from said first receptacle and liquid from said second receptacle to said hand instrument for simultaneous projection therefrom.
Claim 3
Dependent Claim
60 words
The dental care apparatus as claimed in claim 1, which comprises a three-way valve (2) mounted at the outlet of the compressor (1) and capable of being brought selectively to a position in which the compressor supplies compressed air to the two receptacles (3, 4) and to a position where it supplies compressed air only to the second receptacle (4).
Claim 4
Dependent Claim
54 words
The dental care apparatus as claimed in claim 1, wherein the hand instrument (5) is provided with an intrabuccal projection cannula composed of two coaxial conduits, namely a central conduit (31) for projecting the mixture of compressed air and powder and an annular conduit (41), surrounding the central conduit (31), for projecting the liquid.
Claim 5
Dependent Claim
22 words
The dental care apparatus as claimed in claim 1, which comprises a dehumidifying filter (10) mounted at the outlet of the compressor.
Claim 6
Dependent Claim
47 words
The dental care apparatus as claimed in claim 1, which is equipped with a device for sterilizing a toothbrush, said device consisting of an ozone generator (7) connected to a receptacle (9) intended to receive the toothbrush, this generator being fed with air by said compressor (1).
Claim 7
Dependent Claim
18 words
The dental care apparatus as claimed in claim 5, wherein said sterilizing device includes an ultrasound generator (8).
Claim 8
Dependent Claim
37 words
The dental care apparatus as claimed in claim 1, wherein all of its constituent elements (1, 2, 3, 4, 6, 7), with the exception of the hand instrument, are accommodated in a small self-contained portable box (C).
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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) | 1995-06-09 | 1995-12-09 | 1996-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-09 | 1999-12-09 | 2000-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-09 | 2003-12-09 | 2004-06-09 | $7700.00 | Window Closed / Lapsed |