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US4573329A Expired / Lapsed US ⏱️ 0.0 years remaining

Machine for making ice-cream and similar cold products, with a removable freezing container

Assignee: SIMAC SpA - MACCHINE ALIMENTARI VIA GARIBALDI N 20 CAPITAL LIRAS
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Filing: 1984-11-26
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Granted: 1986-03-04
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Expires: 2004-11-26
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Abstract

Abstract A machine for making ice-cream and similar cold products is described, which has a freezing container insertable in and removable from a substantially cylindrical cooling chamber. The chamber is elastically-deformable and has a circular cross-section that is not completely closed on itself due to the presence of a passage. The passage is closed by a pair of shields and by a substantially bellows portion of elastically yielding and thermally insulating material. In this manner, a better thermal efficiency of the machine is obtained.

Inventors

  • 👤 Alfredo Cavalli

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 22:44
CPC Classifications
A; A23; A23G; A23G9/00; A23G9/04; A23G9/08; A23G9/12; F; F25; F25D; F25D31/00; F25D31/006

Claims Analysis

Total Claims: 5
Claim 1
Independent Claim 143 words
A machine for making ice-cream and similar cold products, comprising: a cooling chamber formed by a substantially cylindrical cooling coil, said coil being formed by a plurality of lengths of tubing connected together in series by means of two manifold bodies which are spaced apart in a circumferential direction and define an axially extending passage therebetween, a substantially cylindrical elastic sheath, with an axially extending discontinuity facing said axially extending passage, externally surrounding said cooling coil, a freezing container insertable in and removable from said cooling chamber, two plate-like shields each secured to a respective manifold body and circumferentially projecting towards one another in said axially extending passage, a layer of elastically yielding and thermally insulating material interposed between said cooling coil and said elastic sheath, said layer including a bellows portion extending inside said passage between said plate-like shields and said sheath.
Claim 2
Dependent Claim 143 words
A machine for making ice-cream and similar cold products, comprising: a cooling chamber formed by a substantially cylindrical cooling coil, said coil being formed by a plurality of lengths of tubing connected together in series by means of two manifold bodies which are spaced apart in a circumferential direction and define an axially extending passage therebetween, a substantially cylindrical elastic sheath, with an axially extending discontinuity facing said axially extending passage, externally surrounding said cooling coil, a freezing container insertable in and removable from said cooling chamber, two plate-like shields each secured to a respective manifold body and circumferentially projecting towards one another in said axially extending passage, a layer of elastically yielding and thermally insulating material interposed between said cooling coil and said elastic sheath, said layer including a bellows portion extending inside said passage between said plate-like shields and said sheath.
Claim 3
Dependent Claim 27 words
A machine according to claim 1 wherein said manifold bodies are rigidly connected to said sheath and to said layer of elastically yielding and thermally insulating material.
Claim 4
Dependent Claim 21 words
A machine according to claim 1 wherein said lengths of tubing of the cooling coil are substantially quadrangular in cross section.
Claim 5
Dependent Claim 19 words
A machine according to claim 1, wherein said cooling coil and said shields are lined with a metal skin.

References Cited (Backward Citations)

US3358118A Cited
US2788643A Cited
US2801321A Cited
US3335789A Cited
US3452555A Cited
US3553976A Cited
US3952538A Cited
US4206805A Cited
US4213498A Cited
US4392631A Cited
US4429549A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1989-03-03 1989-09-02 1990-03-04 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1993-03-03 1993-09-02 1994-03-04 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1997-03-03 1997-09-02 1998-03-04 $7700.00 Window Closed / Lapsed

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