# US 2018/0020693 A1 · Apparatus for preparing ice cream and like frozen products > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0020693 A1 - Document ID: US20180020693A1 - Status: Published application - Kind: A1 - Application number: 15/547,279 - Filed: 2016-01-14 - Published: 2018-01-25 - Earliest claimed: 2015-01-29 - Assignees: Milk Cream Ltd. - Applicants: Milk Cream Ltd. - Inventors: Abraham Katz - Web page: https://patentgrep.com/patent/US20180020693A1 ## CPC - A23G 9/10: using containers which are rotated or otherwise moved in a cooling medium - A23G 9/00: Frozen sweets, e.g. ice confectionery, ice-cream; Mixtures therefor - A23G 9/224: {Agitators or scrapers} - A23G 9/225: {Ice-cream freezing and storing cabinets} - A23G 9/28: for portioning or dispensing - A23G: COCOA; COCOA PRODUCTS, e.g. CHOCOLATE; SUBSTITUTES FOR COCOA OR COCOA PRODUCTS; CONFECTIONERY; CHEWING GUM; ICE-CREAM; PREPARATION THEREOF ## Abstract The invention relates to an apparatus for making frozen yogurt sherbet and ice cream, comprising a heat transfer vessel and a scraper for use with a heat exchanger, wherein at least one heat exchanger vessel is used for rotation therein, said vessel comprising coupling means at its exterior bottom for coupling to a motor, a cooling medium within the housing surrounding the vessel, a motor for rotating the at least one vessel within the housing, and a scraper fixedly mounted on the housing extending into the vessel. The invention also relates to the vessel and scraper of the apparatus and to a method of preparing frozen yogurt sherbet and ice cream. ## Claims ### Claim at position 1 1-21. (canceled) ### Claim 22 An apparatus for making frozen yogurt, sherbet and ice cream, comprising: a housing having a counter top with at least one aperture, at least one heat exchanger vessel positioned in said aperture for rotation therein, said at least one vessel comprising coupling means at its exterior bottom for coupling to a motor, the interior bottom of the vessel comprises adjacent curved U shaped troughs having a center peak between them, a cooling medium within the housing surrounding the vessel, a motor for rotating the at least one vessel within the housing, a single scraper blade fixedly mounted on the housing extending into the vessel, wherein the single scraper blade has a J shape with a straight vertical portion thereof extending into the vessel alongside its wall and the bottom portion of the single scraper blade curves and ends along the bottom of the vessel as the curvature of the bottom trough, and the straight vertical portion and the bottom curved portion of the scraper blade have different cross sections. ### Claim 23 (depends on 22) An apparatus as in claim 22, wherein the straight vertical portion has an irregular triangular cross section and said bottom curved portion has a right trapezoidal cross section. ### Claim 24 (depends on 23) An apparatus as in claim 23, wherein the right trapezoidal cross section of the bottom curved portion of the scraper blade has an acute angle of 38°. ### Claim 25 (depends on 22) An apparatus as in claim 22, wherein the vessel comprises a cup having a lip and baffles or flanges around the outer wall of the cup to provide a large outer surface area for improved heat exchange. ### Claim 26 (depends on 22) An apparatus as in claim 22, wherein the vessel comprises a cup having a lip from which extends a wall, wherein the lower ½ to ¾ of the wall has a thickness of 2 to 4 mm to improve heat exchange. ### Claim 27 (depends on 22) An apparatus as in claim 22, wherein the vessel comprises a removable liner. ### Claim 28 (depends on 22) An apparatus as in claim 22, wherein the scraper blade is made from stainless steel, copper zinc alloys, or engineering plastic. ### Claim 29 (depends on 22) An apparatus as in claim 22, wherein the scraper blade is made from engineering plastic. ### Claim 30 (depends on 22) An apparatus as in claim 22, comprising between 1 to 10 vessels with scrapers having capacities of ¼ to 2 liters. ### Claim 31 (depends on 22) An apparatus as in claim 22, comprising a home unit with 1 to 2 vessels. ### Claim 32 (depends on 22) A method of preparing yogurt, sherbet or ice cream, comprising: providing an apparatus as in claim 22, providing means to cool the vessel, cooling the outside of the vessel to a temperature between −10° C. and −30° C., to maintain an interior vessel temperature of about −5° C., introducing into the vessel the desired ingredients, activating the motor to rotate the vessel at a speed of between 20 and 300 rpm to cool, mix and aerate the contents of the vessel, and retrieving the freshly prepared yogurt, sherbet or ice cream from the vessel. ### Claim 33 (depends on 32) A method as in claim 32 wherein the product is retrieved from the vessel on a spoon, spatula or stick introduced into the vessel opposite the scraper blade, by catching the fresh yogurt, sherbet or ice cream as it builds up and removing same from the vessel while it is still rotating, to recover a thick layer of fresh yogurt, sherbet or ice cream with an overrun of 20-40%. ### Claim 34 (depends on 32) A method as in claim 32, wherein the product is retrieved after the rotation of the vessel has slowed down or stopped completely. ### Claim 35 (depends on 1, 22) A scraper blade for use in an apparatus as claimed in claim 22, the blade having a J shape with a straight vertical portion and a bottom portion curve to conform to the bottom of a vessel as defined in claim 1, wherein the straight vertical portion has an irregular triangular cross section and said bottom curved portion has a right trapezoidal cross section. ### Claim 36 (depends on 35) A scraper as in claim 35, wherein the right trapezoidal cross section of the bottom curved portion of the scraper blade has an acute angle of 38°. ### Claim 37 (depends on 29) An apparatus as in claim 29, wherein the engineering plastic comprises a metal insert to assure rigidity.