Patent US4608018A successfully refreshed from Google Patents.
US4608018A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for cleaning in particular teeth
Assignee: Individual
•
Filing: 1985-02-21
•
Granted: 1986-08-26
•
Expires: 2005-02-21
Abstract
Abstract Disclosed herein is an apparatus for cleaning in particular teeth, that operates in accordance with the mechanical sandblasting principle and is equipped with a barrel provided with a multiple nozzle, and with means of connection identical to those of a dentistry turbodrill. In order to obtain a gas-powder mixture that is permanently constant or, through control means, is rendered variable, the handgrip of the barrel is fashioned hollow and divided into a receiving chamber, a swirl precombustion chamber and a swirl chamber communicating via elements having a calibrated passage hole. The powder and a small quantity of gas are inserted into the receiving chamber, while the major quantity of gas in inserted into the swirl precombustion chamber through a powder percentage regulator.
Inventors
- 👤 Luigi Ghedini
- 👤 Rubbini Claudio
- 👤 Grillini Mauro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:51
CPC Classifications
A; A61; A61C; A61C3/00; A61C3/02; A61C3/025
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
88 words
An apparatus for cleaning teeth with water, air and a dental cleaning powder comprising a handgrip, a multiple nozzle, a water supply means connected at one end to said nozzle and at said other end adapted to be connected to a source of pressurized water, said handgrip defining a powder chamber and at least one mixing chamber, means to supply pressurized air to said powder chamber, means to supply pressurized air and powder to said mixing chamber, and means to connect said mixing chamber to said multiple nozzle.
Claim 2
Independent Claim
88 words
An apparatus for cleaning teeth with water, air and a dental cleaning powder comprising a handgrip, a multiple nozzle, a water supply means connected at one end to said nozzle and at said other end adapted to be connected to a source of pressurized water, said handgrip defining a powder chamber and at least one mixing chamber, means to supply pressurized air to said powder chamber, means to supply pressurized air and powder to said mixing chamber, and means to connect said mixing chamber to said multiple nozzle.
Claim 3
Dependent Claim
70 words
The apparatus of claim 1 comprising at least two swirl mixing chambers being defined by said handgrip, a first swirl chamber being located between a second swirl chamber and said powder chamber, means connecting said first swirl chamber with said second swirl chamber to supply the contents of said second swirl chamber, and said multiple nozzle being connected to said multiple nozzle to supply air and a powder mixture thereto.
Claim 4
Dependent Claim
65 words
The apparatus of claim 2 comprising an air supply duct adapted to be connected to a source of pressurized air, said air duct being connected to both said powder chamber and said first swirl chamber to deliver pressurized air to said powder and first swirl chambers, a regulator connected to said handgrip and said duct to regulate the air delivered to said first swirl chamber.
Claim 5
Dependent Claim
24 words
Apparatus according to claim 2, wherein the said powder chamber has therein a plug for sealing a hole through which said powder is inserted.
Claim 6
Dependent Claim
79 words
Apparatus according to claim 2, wherein said powder chamber is a receiving cavity provided to receive a powder cartridge said receiving cavity and said powder cartridge being shaped to provide for insertion and removal of said powder cartridge from said powder chamber, said air supply means being so shaped as to perforate the opposite sides of the cartridge with one said air supply means being movable in order to insert the cartridge in said receiving cavity in said handgrip.
Claim 7
Dependent Claim
34 words
Apparatus according to claim 5, wherein the said supply means are constituted by internally hollow tubes on which are mounted gaskets that seal flush up against the opposite end surfaces of the said cartridge.
Claim 8
Dependent Claim
33 words
Appartus according to claim 5, wherein the said cavity extends laterally and longitudinally with respect to said handgrip, and the cartridge is so shaped as to act as a cover sealing said cavity.
Claim 9
Dependent Claim
66 words
Apparatus according to claim 6, wherein the said movable element of the supply means is provided with a control lever that can be operated from the outside in order to bring about a longitudinal traversing movement on the part of the said movable element, elastic means being provided to maintain this in a configuration of projection into the inside of the cavity in the said barrel.
Claim 10
Independent Claim
88 words
An apparatus for cleaning teeth with water, air and a dental cleaning powder comprising a handgrip, a multiple nozzle, a water supply means connected at one end to said nozzle and at said other end adapted to be connected to a source of pressurized water, said handgrip defining a powder cartridge chamber, said powder cartridge chamber being sized to receive a powder cartridge containing dental cleaning powder, means to supply pressurized air to said powder cartridge and means to supply pressurized air and powder to said multiple nozzle.
Claim 11
Independent Claim
88 words
An apparatus for cleaning teeth with water, air and a dental cleaning powder comprising a handgrip, a multiple nozzle, a water supply means connected at one end to said nozzle and at said other end adapted to be connected to a source of pressurized water, said handgrip defining a powder cartridge chamber, said powder cartridge chamber being sized to receive a powder cartridge containing dental cleaning powder, means to supply pressurized air to said powder cartridge and means to supply pressurized air and powder to said multiple nozzle.
References Cited (Backward Citations)
US2814877A
Cited
US4412402A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-08-25 | 1990-02-24 | 1990-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-08-25 | 1994-02-24 | 1994-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-08-25 | 1998-02-24 | 1998-08-26 | $7700.00 | Window Closed / Lapsed |