US3890713A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dental devices
Assignee: Individual
•
Filing: 1973-09-25
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Granted: 1975-06-24
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Expires: 1993-09-25
Abstract
Abstract A dental implement for use in connection with filling of tooth cavities with amalgam or a similar tooth filling material, characterized in that it is made as a hand tool having a narrow outlet spout for amalgam and an amalgam container communicating with the spout for dispensing amalgam therethrough, and a vibrator unit serving to vibrate a tool part by means of which the amalgam in the cavity can be compressed or condensed. In the outlet spout there is mounted a plunger or hammar element connected to a vibrator and serving to push the filling material into the tooth cavity in a beat like manner with a relatively high working frequency, e.g. 500 cycles per minute, whereby it is possible to rapidly fill the cavity with many small portions of the filling material and with positive compression or condensation of each of these portions. The advantage of using the device is not only a considerable saving of work but also that in practice it becomes possible to fill the tooth cavity according to the so-called ''''wet'''' method whereby a filling of a highly improved quality is obtainable.
Inventors
- 👤 Nils Villadsen Nielsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 21:36
CPC Classifications
B; B05; B05C; B05C17/00; B05C17/005; B05C17/00593; A; A61; A61C; A61C5/00; A61C5/60; A61C5/62; B05C17/00596
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
217 words
A dental implement for use in connection with filling of tooth cavities with a tooth filling material, comprising: a housing means, an outlet means provided on said housing means including an outlet spout provided with a central outlet passage having an outlet opening, a side opening provided in said outlet spout and communicating with said central outlet passage, a reciprocably mounted plunger means disposed in said central outlet passage, said plunger means being reciprocable between a retracted position uncovering said side opening and an advanced position covering said side opening, said plunger means including an outer end portion which is situated adjacent the outlet opening of said outlet passage when said plunger means is in said advanced position, a removable cartridge means for holding the tooth filling material, means mounted on said housing means for receiving said cartridge means, means disposed in said housing at said cartridge receiving means for holding said cartridge means therein, and a power driven vibrator means connected to said plunger means for reciprocating the same in said central outlet passage, a connector conduit means disposed between said cartridge means and said side opening for guiding the filling material from said container means to said outlet opening whereby the filling material is dispensed through the outlet opening into the cavity and compressed therein.
Claim 2
Dependent Claim
217 words
A dental implement for use in connection with filling of tooth cavities with a tooth filling material, comprising: a housing means, an outlet means provided on said housing means including an outlet spout provided with a central outlet passage having an outlet opening, a side opening provided in said outlet spout and communicating with said central outlet passage, a reciprocably mounted plunger means disposed in said central outlet passage, said plunger means being reciprocable between a retracted position uncovering said side opening and an advanced position covering said side opening, said plunger means including an outer end portion which is situated adjacent the outlet opening of said outlet passage when said plunger means is in said advanced position, a removable cartridge means for holding the tooth filling material, means mounted on said housing means for receiving said cartridge means, means disposed in said housing at said cartridge receiving means for holding said cartridge means therein, and a power driven vibrator means connected to said plunger means for reciprocating the same in said central outlet passage, a connector conduit means disposed between said cartridge means and said side opening for guiding the filling material from said container means to said outlet opening whereby the filling material is dispensed through the outlet opening into the cavity and compressed therein.
Claim 3
Dependent Claim
41 words
An implement according to claim 1, in which shaking coupling means are provided for releasably coupling together said cartridge means with said vibrator means to effect a mixing shaking of said cartridge means prior to actual use of the dental implement.
Claim 4
Dependent Claim
52 words
An implement according to claim 1, in which vibrator coupling means are provided for releasably coupling together the cartridge means with said vibrator means to subject said cartridge means to moderate vibrations of a frequency higher than the vibrating frequency of the vibrator means when the dental implement is in actual use.
Claim 5
Dependent Claim
53 words
An implement according to claim 3, in which said cartridge holding means includes a corrugated surface portion, and said vibrator coupling means includes a corrugated friction plate to impart to said cartridge means only vibrations resulting from the sliding of said corrugated surface portion and said corrugated friction plate relative to each other.
Claim 6
Dependent Claim
19 words
An implement according to claim 4, in which means are provided for producing an overpressure in said cartridge means.
Claim 7
Dependent Claim
71 words
An implement according to claim 5, in which said cartridge receiving means is pivotally mounted so as to be swingable between a projecting cartridge means receiving position in which the cartridge means can be laid into or taken out from the cartridge receiving means, and a closed position of use, and in which means are provided for opening said cartridge means in response to the swinging thereof to said closed position.
Claim 8
Dependent Claim
64 words
An implement according to claim 6, in which means connected to said cartridge receiving means and said cartridge holding means are provided for releasing the vibrator coupling means when the cartridge receiving means is swung into its position of use and for reestablishing the coupling of said vibrator coupling means when said container receiving means is swung outwardly towards said cartridge means receiving position.
Claim 9
Dependent Claim
139 words
An amalgam cartridge for use in a device according to claim 6, the cartridge containing an amount of filling and mercury or equivalent materials in mutually separated chambers which are openable towards each other by manipulation from outside, characterized in that the cartridge has an outlet opening provided in an arched end surface thereof, this surface being covered by a correspondingly arched surface of a generally funnEl shaped element constituting said connector conduit means in which there is provided a channel, the channel is provided with an opening in said arched surface which opening is staggered relatively to the outlet opening of the cartridge when the cartridge is placed in said cartridge receiving means in the cartridge receiving position thereof, while the two said openings are brought to communicate when the cartridge is swung into said position of use.
Claim 10
Dependent Claim
20 words
An implement according to claim 1, wherein said connector conduit means includes a removable insert means disposed in said housing.
Claim 11
Dependent Claim
23 words
An implement according to claim 3, wherein said container holder means and said connector conduit means are both connected to said vibrator means.
Claim 12
Dependent Claim
155 words
An implement according to claim 3, in which shaking coupling means are provided for releasably shakably coupling said cartridge means with said vibrator means to enable said vibrator means to effect a mixing shaking of said cartridge means prior to use of the implement, and in which said cartridge receiving means is movable between a receiving position in which it is operable to receive said container, a shaking position in which it holds said cartridge means while shaking it, and an operative position in which it disposes said cartridge means in said cartridge holding means with said cartridge means in communication with said side opening, said cartridge receiving means being operatively connected with said shaking coupling means and said vibrator coupling means so as to make the shaking coupling means operative in said shaking position of said cartridge receiving means and said vibrator coupling means operative in said operative position of said cartridge receiving means.
Claim 13
Dependent Claim
67 words
An implement according to claim 11, in which said cartridge receiving means is pivotally mounted on said housing means so as to be swingable between a cartridge receiving position, in which said cartridge receiving means projects outwardly from said housing means, and a closed position in which an outer surface portion of said cartridge receiving means is substantially flush with the outer surface of said housing means.
Claim 14
Dependent Claim
89 words
An implement according to claim 1, in which said cartridge holder means is movable between a cartridge receiving position, in which it is operable to receive said connector conduit means and said cartridge means, and an operative position in which it holds said cartridge means in operative engagement with said connector conduit means, and in which means are provided for bringing an outlet opening of said cartridge means into operative engagement with said connector conduit means in response to said cartridge receiving means being moved into said operative position.
Claim 15
Dependent Claim
75 words
An implement according to claim 13, in which said cartridge means includes an actuator member operable to brake an internal partition between two components of the filling material provided in said cartridge means for allowing mixing of the components, and in which said cartridge receiving means is guided so as to cause actuation of said actuator member in response to said cartridge receiving means being moved from said cartridge receiving position towards said operative position.
Claim 16
Dependent Claim
53 words
An implement according to claim 13, in which injector means are provided for supplying compressed air to the interior of said cartridge means, said injector means being located so as to operatively engage said container means in response to said cartridge means being moved into its operative position by said container receiving means.
References Cited (Backward Citations)
US3521356A
Cited
US3623224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-06-23 | 1978-12-23 | 1979-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-23 | 1982-12-23 | 1983-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-23 | 1986-12-23 | 1987-06-24 | $7700.00 | Window Closed / Lapsed |