# US 8,539,780 B2 · Method and apparatus for harvesting ice in an ice maker system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,539,780 B2 - Document ID: US8539780B2 - Status: Granted - Kind: B2 - Application number: 12/824,987 - Filed: 2010-06-28 - Published: 2011-12-29 - Granted: 2013-09-24 - Earliest claimed: 2010-06-28 - Assignees: General Electric Company - Applicants: Carlos A. Herrera; Russell James Fallon; Ronald Gary Foster; William Newton - Inventors: Carlos A. Herrera; Russell James Fallon; Ronald Gary Foster; William Newton - Web page: https://patentgrep.com/patent/US8539780B2 ## CPC - F25C 5/08: by heating bodies in contact with the ice - F25C 2305/0221: rotating ice mould - F25C: PRODUCING, WORKING OR HANDLING ICE ## Abstract Method and apparatus for ice maker systems are disclosed. One exemplary method comprises the steps of: heating an ice mold body to separate ice formed in the ice mold body from the ice mold body; releasing the separated ice from the ice mold body; and contacting at least a portion of the ice mold body with a heat transfer fluid to cool the ice mold body. ## Claims ### Claim 1 A method comprising: heating an ice mold body to separate ice formed in the ice mold body from the ice mold body; releasing the separated ice from the ice mold body; and contacting at least a portion of the ice mold body with a given amount of a heat transfer fluid inescapably confined within a heat transfer reservoir sealed to the ice mold body to cool the ice mold body, the heat transfer fluid being other than a cooling medium used to freeze water in the ice mold to make ice. ### Claim 2 (depends on 1) The method of claim 1, wherein the step of heating the ice mold body to separate ice formed in the ice mold body from the ice mold body further comprises inductive heating. ### Claim 3 (depends on 1) The method of claim 1, wherein the step of heating the ice mold body to separate ice formed in the ice mold body from the ice mold body further comprises resistive heating. ### Claim 4 (depends on 1) The method of claim 1, wherein the step of releasing the separated ice from the ice mold body further comprises rotating the ice mold body such that the separated ice is released from the ice mold body. ### Claim 5 (depends on 4) The method of claim 4, wherein the step of contacting at least a portion of the ice mold body with the heat transfer fluid to cool the ice mold body further comprises progressively contacting the ice mold body with the heat transfer fluid as the ice mold body rotates. ### Claim 6 A method comprising: heating an ice mold body to separate ice formed in the ice mold body from the ice mold body; releasing the separated ice from the ice mold body; and contacting at least a portion of the ice mold body with a heat transfer fluid to cool the ice mold body, the heat transfer fluid being other than a cooling medium used to freeze water in the ice mold to make ice; wherein the step of releasing the separated ice from the ice mold body further comprises rotating the ice mold body such that the separated ice is released from the ice mold body; wherein the step of contacting at least a portion of the ice mold body with the heat transfer fluid to cool the ice mold body further comprises progressively contacting the ice mold body with the heat transfer fluid as the ice mold body rotates; and further comprising the step of returning the ice mold body to an ice formation position such that the heat transfer fluid no longer contacts the ice mold body. ### Claim 7 An apparatus comprising: an ice mold body for forming ice therein; a heating element proximate to the ice mold body for heating the ice mold body to separate the ice formed in the ice mold body from the ice mold body such that the separated ice is releasable from the ice mold body; and a heat transfer fluid reservoir sealed to the ice mold body for permitting a given amount of a heat transfer fluid inescapably confined within the reservoir to contact at least a portion of the ice mold body to cool the ice mold body. ### Claim 8 (depends on 7) The apparatus of claim 7, wherein the ice mold body further comprises one or more surface augmentations for assisting in cooling of the ice mold body. ### Claim 9 (depends on 8) The apparatus of claim 8, wherein the one or more surface augmentations further comprise a plurality of cooling fins. ### Claim 10 (depends on 9) The apparatus of claim 9, wherein the cooling fins are located on a bottom surface of the ice mold body. ### Claim 11 (depends on 7) The apparatus of claim 7, wherein the ice mold body further comprises a heat sink. ### Claim 12 (depends on 7) The apparatus of claim 7, wherein the heating element further comprises an inductive heating element. ### Claim 13 (depends on 7) The apparatus of claim 7, wherein the heating element further comprises a resistive heating element. ### Claim 14 (depends on 7) The apparatus of claim 7, wherein the heat transfer fluid further comprises a glycol-based solution. ### Claim 15 (depends on 7) The apparatus of claim 7, further comprising an ice mold rotator assembly for rotating the ice mold body such that the separated ice is released from the ice mold body. ### Claim 16 (depends on 15) The apparatus of claim 15, wherein the ice mold rotator assembly rotates the ice mold body such that the heat transfer fluid progressively contacts the ice mold body as the ice mold body rotates. ### Claim 17 (depends on 7) The apparatus of claim 7, wherein the ice mold body is fixed to the heat transfer fluid reservoir. ### Claim 18 (depends on 7) The apparatus of claim 7, wherein the ice mold body is selectively detachable from the heat transfer fluid reservoir. ### Claim 19 An apparatus comprising: an ice mold assembly comprising an ice mold body for forming ice therein, and a heat transfer fluid reservoir sealed to the ice mold body inescapably confining therein a given amount of a heat transfer fluid; a heating element assembly proximate to the ice mold assembly; and an ice mold rotator assembly for rotating the ice mold assembly; wherein, during an ice harvesting cycle, the heating element heats the ice mold body to separate the ice formed in the ice mold body from the ice mold body, and the ice mold rotator assembly rotates the ice mold assembly such that the separated ice is released from the ice mold body and the heat transfer fluid progressively contacts the ice mold body as the ice mold assembly rotates. ### Claim 20 (depends on 19) The apparatus of claim 19, further comprising an ice bucket assembly for storing the released ice.