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US 4,392,361 AGranted
Self-contained ice cream apparatus
OwnerAlfredo Cavalliinventor
Life of this patent
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OwnerAlfredo Cavalliinventor
Estimating the term…
A self-contained apparatus (20, 100, 200) for making an ice cream type mixture includes a mixing chamber or container (22, 103, 222) which is controllably cooled by a refrigeration unit (50, 50, 50") including a coil (52, 52', 52") surrounding the container (22, 103, 222). A blade (32-36, 105, 208-209) such as a flexible blade, is rotatably driven in the container (22, 103, 222) by a motor (28, 28', 28") and may preferably include an angled multifunction blade (32) and a scraper blade (36). The multifunction blade (32) primarily performs three functions of forcing the mixture contents downwardly toward the base wall (33) and forcing these contents outwardly from the center (26) toward the side wall (35) and kneading the ingredients while the scraper blade (36) forces those contents upwardly from the base wall (33) and from the side wall (35) toward the center (26) thereby cyclically intermixing the warmer and colder contents and providing a substantially uniform temperature gradient for the mixture. The base wall (233) of the chamber (222) may also include protruding ribs (207) which cooperate with the flexible blade (209) to crush or shred fruit added to the mixture. The apparatus (100) may also include a heater coil 106 surrounding the container 103 for selectively heating the contents to be mixed instead of refrigerating them, as well as a separate container (107) and blade 109 for blending vegetables with the blade 109 being selectively driven by the same motor (28') which drives the blade (105) associated with the other container (103).
A self contained apparatus for making an ice cream type mixture from a plurality of ingredients therefor comprising a mixing chamber having a base wall and a side wall with respect thereto, refrigeration means for controllably cooling the interior of said chamber, blade means rotatably mountable in said mixing chamber for rotation about an axis of said chamber, and means for controllably rotatably driving said blade means within said chamber about said axis, said blade means comprising means for scraping said side and base walls for forcing said ingredients from said side wall toward said axis and upwardly away from said base wall and for forcing said ingredients from said axis toward said side wall and downwardly toward said base wall as said blade means rotates about said axis for stirring and intermixing said ice cream ingredients throughout said chamber interior, said blade means being configured and disposed for substantially continually transporting the warmer portions of the mixture toward the colder areas thereof and the colder portions of the mixture toward the warmer areas thereof during the rotation of said blade means for providing a substantially uniform temperature gradient for substantially the entire resultant ice cream mixture.
A self-contained apparatus for making an ice cream type mixture from a plurality of ingredients therefor comprising a mixing chamber having a base wall and a side wall with respect thereto, refrigeration means for controllably cooling the interior of said chamber, blade means mountable in said mixing chamber for relative rotation between said blade means and said mixing chamber about the axis of said chamber, and means for controllably causing said relative rotation between said blade and said chamber about said chamber axis, said blade means comprising means for scraping said side and base walls for forcing said ingredients from said side wall toward said axis and upwardly away from said base wall and for forcing said ingredients from said axis toward said side wall and downwardly toward said base wall as said relative rotation of said blade means about said axis occurs for stirring and intermixing said ice cream ingredients throughout said chamber interior, said blade means being configured and disposed for substantially continually transporting the warmer portions of the mixture toward the colder areas thereof and the colder portions of the mixture toward the warmer areas thereof during said relative rotation of said blade means for providing a substantially uniform temperature gradient for substantially the entire resultant ice cream mixture.
Dependencies are inferred from the claim text.