# US 6,240,739 B1 · Display refrigerator evaporator cover > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,240,739 B1 - Document ID: US6240739B1 - Status: Granted - Kind: B1 - Application number: 09/640,414 - Filed: 2000-08-17 - Granted: 2001-06-05 - Earliest claimed: 2000-08-17 - Assignees: Zero Zone, Inc. - Inventors: Paul Michael Hayes - Web page: https://patentgrep.com/patent/US6240739B1 ## CPC - F25D 17/062: {in household refrigerators} - A47F 3/0482: {Details common to both closed and open types} - F25D 23/065: {Details} - F25D 2317/0651: through the bottom - F25D: REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR (refrigerated showcases A47F3/04; thermally-insulated vessels for domestic use A47J41/00; refrigerated vehicles, see the appropriate subclasses of classes B60 - B64; containers with thermal insulation in general B65D81/38; heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants, or materials for the production of heat or cold by chemical reactions other than by combustion C09K5/00; thermally-insulated vessels for liquefied or solidified gases F17C; air-conditioning or air-humidification F24F; refrigeration machines, plants, or systems F25B; cooling of instruments or comparable apparatus without refrigeration G12B) - A47F: SPECIAL FURNITURE, FITTINGS, OR ACCESSORIES FOR SHOPS, STOREHOUSES, BARS, RESTAURANTS OR THE LIKE; PAYING COUNTERS ## Abstract A cover for a cooling unit, such as an evaporator assembly, of a display refrigerator. The cover is advantageously made of a single piece of material, preferably an injection molded, filled polypropylene plastic, which is capable of withstanding the harsh conditions found in a display refrigerator. The cover is further advantageously configured to enhance the operation of the evaporator assembly, protect the evaporator assembly, insulate the frozen or refrigerated food and drink items from the heat generated by the evaporator assembly, and decrease the time needed to install the cover into or remove the cover from the display refrigerator. ## Claims ### Claim 1 A cover positioned between an evaporator assembly and an interior display space of a display refrigerator, said cover comprising: a main body portion and a grill portion which affords fluid flow communication between the evaporator assembly and the interior display space and wherein said main body portion and said grill portion are formed as a single piece of material. ### Claim 2 (depends on 1) A cover according to claim 1, wherein the display refrigerator includes spaced apart front and rear walls and wherein said cover is adapted to extend between the front and rear walls. ### Claim 3 (depends on 1) A cover according to claim 1 and further including a locating member for mating connection with a component of the display case so as to properly locate said cover within the display case. ### Claim 4 (depends on 1) A cover according to claim 1, wherein one side of said cover is adapted to be overlapped by a portion of an adjoining cover such that a lap joint can be created between the adjoining covers, and wherein an opposite side of said cover is adapted to overlap a portion of yet another adjoining cover such that a lap joint can be created between these adjoining covers. ### Claim 5 (depends on 1) A cover according to claim 1, wherein at least one side of said cover includes a notch which extends completely through said cover. ### Claim 6 (depends on 1) A cover according to claim 1, wherein said grill portion includes a notch which extends completely through said cover. ### Claim 7 (depends on 1) A cover according to claim 1, wherein said grill portion includes a first set of spaced apart, substantially vertical parallel walls and a second set of spaced apart, substantially non-vertical parallel walls which interconnect with said first set of walls to form a substantially grid like portion. ### Claim 8 (depends on 1) A cover according to claim 1, wherein said cover includes a top surface which is imperforate along said main body portion and which provides openings in said grill portion. ### Claim 9 (depends on 8) A cover according to claim 8, wherein said top surface which at least partially defines said grill portion is downwardly ramped toward an end of said cover. ### Claim 10 A cover adapted to be housed in a display refrigerator having a display case and an evaporator assembly within the display case, said cover comprising: an imperforate main body portion overlying the evaporator assembly and a grill portion affording fluid flow communication between the evaporator assembly and the remainder of the display case, said main body portion and said grill portion being formed as a single piece of injection molded plastic material. ### Claim 11 (depends on 10) A cover according to claim 10, wherein the display case includes a front wall and wherein the grill portion is located adjacent the front wall. ### Claim 12 (depends on 10) A cover according to claim 10, wherein the display case has a rear wall and wherein the cover includes a locating member located adjacent the rear wall. ### Claim 13 (depends on 10) A cover according to claim 10, wherein one side of said cover is adapted to be overlapped by a portion of an adjoining cover such that a lap joint can be created between the adjoining covers, and wherein an opposite side of said cover is adapted to overlap a portion of yet another adjoining cover such that a lap joint can be created between these adjoining covers. ### Claim 14 (depends on 10) A cover according to claim 10, wherein at least one side of said cover includes a notch which extends completely through said cover. ### Claim 15 (depends on 10) A cover according to claim 10, wherein said grill portion includes a notch which extends completely through said cover. ### Claim 16 (depends on 10) A cover according to claim 10, wherein said grill portion includes a first set of spaced apart, substantially vertical parallel walls and a second set of spaced apart, substantially non-vertical parallel walls which interconnect with said first set of walls. ### Claim 17 (depends on 10) A cover according to claim 10, wherein said single piece cover is made of a filled polypropylene. ### Claim 18 (depends on 10) A cover according to claim 10, wherein said cover includes a top surface which at least partially defines said main body portion and a plurality of ribs underlying the top surface. ### Claim 19 (depends on 18) A cover according to claim 18, wherein said top side of the main body portion is generally horizontal. ### Claim 20 A display refrigerator comprising: a display case having a front wall, a rear wall and defining an interior space; an evaporator assembly housed within said interior space; and a cover positioned adjacent said evaporator assembly and separating said interior space into a display space and an evaporator assembly portion, said cover extending between said front wall and said rear wall, said cover including an imperforate main body portion, a grill portion affording fluid flow communication between said display space and said evaporator assembly portion, said grill portion includes a first set of spaced apart, substantially vertical parallel walls and a second set of spaced apart, substantially nonvertical parallel walls which interconnect with said first set of walls to form a plurality of openings, wherein said main body portion and said grill like portion are formed as a single piece of filled polypropylene injection molded plastic, said cover including a first side defining a first tab having a recessed upper surface and said cover including a second side defining a second tab having a recessed underside and being adapted to be engaged by the first side of a second cover to define therebetween a lap joint.