US3712072A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling dental materials
Assignee: RHOMEGA SYST Inc
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Filing: 1971-04-23
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Granted: 1973-01-23
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Expires: 1991-04-23
Abstract
Abstract There is disclosed apparatus for cooling dental materials preparatory to mixing a thermoelectric cooling device is disposed in cooling relation to a support for receptacles containing the dental material and in cooling relation to a removable platform on which the materials are mixed. Another mixing platform is provided out of cooling relation to the thermoelectric cooler.
Inventors
- 👤 H Hoge
- 👤 G Wadsworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:38
CPC Classifications
A; A61; A61C; A61C19/00; F; F25; F25B; F25B21/00; F25B21/02; F25B2321/00; F25B2321/02; F25B2321/025; F25B2321/0251
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
86 words
An apparatus for cooling dental materials preparatory to mixing thereof comprising a housing providing means for receiving a pluralty of dental material containing receptacles; a removable mixing platform positioned in the housing and comprising a multiplicity of sheets; thermoelectric cooling means having a cold side, in heat conducting relationship with the receiving means and the platform for cooling the receiving means and the mixing platform below ambient, and the hot side; means for dissipating the heat produced at the hot side of the thermoelectric cooling means.
Claim 2
Independent Claim
86 words
An apparatus for cooling dental materials preparatory to mixing thereof comprising a housing providing means for receiving a pluralty of dental material containing receptacles; a removable mixing platform positioned in the housing and comprising a multiplicity of sheets; thermoelectric cooling means having a cold side, in heat conducting relationship with the receiving means and the platform for cooling the receiving means and the mixing platform below ambient, and the hot side; means for dissipating the heat produced at the hot side of the thermoelectric cooling means.
Claim 3
Dependent Claim
52 words
The apparatus of claim 1 wherein the housing comprises a first insulated compartment and a second compartment; the first mixing platform and the receiving means reside in the insulated compartment; the heat dissipating means resides in the second compartment; and further comprising a second removable mixing platform residing in the second compartment.
Claim 4
Dependent Claim
64 words
The apparatus of claim 2 wherein the heat dissipating means comprising a heat conductor in contact with the hot side and means providing an air path through the second compartment, the air path including an inlet section upstream of the heat conductor and an outlet section downstream of the heat conductor, the inlet section passing in heat exchanging relation to the second mixing platform.
Claim 5
Dependent Claim
26 words
The apparatus of claim 1 further comprising a second removable mixing platform residing in the housing; and means for maintaining the second platform at ambient temperature.
Claim 6
Dependent Claim
37 words
The apparatus of claim 4 wherein the maintaining means comprises a compartment in the housing open to the atmosphere and means for circulating ambient air through the housing, the second mixing platform being located in the compartment.
Claim 7
Dependent Claim
14 words
The apparatus of claim 1 wherein the sheets are of low thermal conductivity material.
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) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |