Patent US3660988A successfully refreshed from Google Patents.
US3660988A
Expired / Lapsed
US
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Container for combining gas with a liquid mixture and for conveying the mixture thereby obtained to a machine, particularly for use in ice cream making machines
Assignee: WETRIFIN AG
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Filing: 1969-09-22
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Granted: 1972-05-09
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Expires: 1989-09-22
Abstract
Abstract An ice cream making machine and a combined conveying and mixing apparatus are disclosed. The conveying and mixing apparatus provide the pressure for feeding the ice cream mix from its container to the ice cream making machine while simultaneously incorporating a predetermined specific gas ratio into the mix so as to produce the desired gas mix ratio in a complete ice cream.
Inventors
- 👤 Giancarlo Garavelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:04
CPC Classifications
A; A23; A23G; A23G9/00; A23G9/04; A23G9/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
225 words
In combination with an ice cream freezer an apparatus for producing a gas-liquid emulsion and for conveying said emulsion to said ice cream freezer, said apparatus comprising the combination of: a sealed container having a quantity of liquid ice cream mix therein; a pipe in communication with the upper part of said sealed container above the top of the liquid for supplying gas under pressure to said sealed container; a mixing block positioned within said container and adjacent the bottom thereof below the top of the liquid, said mixing block having a mixing chamber therein and an opening communicating with said sealed container below the top of the liquid to admit liquid from the container into said mixing chamber; a first tube extending upwardly of the mixing chamber above the top of the liquid for conducting gas from the upper portion of said sealed container above the top of the liquid to said mixing chamber; means connected to said first tube for controlling and varying the flow of said gas to said mixing chamber; a second tube connected to, and in communication with, said mixing chamber and extending outwardly of the container for conveying the emulsion formed within said chamber from said chamber; and means detachably secured to said second tube and extending to the freezer for conveying said emulsion to the ice cream freezer.
Claim 2
Dependent Claim
225 words
In combination with an ice cream freezer an apparatus for producing a gas-liquid emulsion and for conveying said emulsion to said ice cream freezer, said apparatus comprising the combination of: a sealed container having a quantity of liquid ice cream mix therein; a pipe in communication with the upper part of said sealed container above the top of the liquid for supplying gas under pressure to said sealed container; a mixing block positioned within said container and adjacent the bottom thereof below the top of the liquid, said mixing block having a mixing chamber therein and an opening communicating with said sealed container below the top of the liquid to admit liquid from the container into said mixing chamber; a first tube extending upwardly of the mixing chamber above the top of the liquid for conducting gas from the upper portion of said sealed container above the top of the liquid to said mixing chamber; means connected to said first tube for controlling and varying the flow of said gas to said mixing chamber; a second tube connected to, and in communication with, said mixing chamber and extending outwardly of the container for conveying the emulsion formed within said chamber from said chamber; and means detachably secured to said second tube and extending to the freezer for conveying said emulsion to the ice cream freezer.
Claim 3
Dependent Claim
34 words
The apparatus as defined in claim 1 wherein the means for controlling the flow of gas includes an aperture in the second tube and hand controlled means for varying the size of said aperture.
References Cited (Backward Citations)
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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) | 1975-05-09 | 1975-11-08 | 1976-05-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-09 | 1979-11-08 | 1980-05-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-09 | 1983-11-08 | 1984-05-09 | $7700.00 | Window Closed / Lapsed |