# US 2017/0254580 A1 · Cold room combination vent and light > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0254580 A1 - Document ID: US20170254580A1 - Status: Published application - Kind: A1 - Application number: 15/190,478 - Filed: 2016-06-23 - Published: 2017-09-07 - Earliest claimed: 2016-03-04 - Assignees: Kason Industries, Inc. - Applicants: Kason Industries, Inc. - Inventors: Raymond J. Hiller; Brett A. Mitchell; Burl M. Finkelstein - Web page: https://patentgrep.com/patent/US20170254580A1 ## CPC - F25D 17/047: {Pressure equalising devices} - F16K 15/063: {the valve being loaded by a spring} - F16K 17/0413: {in the form of closure plates} - F25D 13/00: Stationary devices, e.g. cold-rooms - F25D 17/045: {Air flow control arrangements} - F25D 27/00: Lighting arrangements (in general F21) - 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) - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} ## Abstract A combination light and pressure relief vent (10) is disclosed which includes a housing (11), a valve assembly (12), and a light assembly (13). The housing include a valve body (16), port tube (17), and an outside louver (18). The valve body has a low pressure intake port (25), a high pressure intake port (26), and a low pressure exhaust port (27). The valve assembly includes a low pressure intake valve (40), a high pressure intake valve (42), and a low pressure exhaust valve (44). The light assembly includes a heat sink casing (51) which partially defines a heat chamber (52). The casing has a front wall (55) to which is mounted an LED module (57). A lens cover (61) is coupled to the front surface of the casing. Heat generated by the LED module is transferred through the casing to the heat chamber to warm the valve assembly. ## Claims ### Claim 1 A cold room vent comprising: a housing mountable to a cold room structure, said housing having a low pressure intake port, a high pressure intake port, and an exhaust port; a spring loaded low pressure intake valve mounted to said low pressure intake port having a first spring tension which allows the opening of said spring loaded low pressure intake valve at a first air pressure level; a spring loaded high pressure intake valve mounted to said high pressure intake port having a second spring tension which allows the opening of said spring loaded high pressure intake valve at a second air pressure level greater than said first air pressure level, and an exhaust valve mounted to said exhaust port, whereby the spring loaded low pressure intake valve opens the low pressure intake port at a first air pressure level and the spring loaded high pressure intake valve opens the high pressure intake port at a second air pressure level. ### Claim 2 (depends on 1) The cold room vent of claim 1 wherein said spring loaded low pressure intake valve opens upon the cold room structure reaching an air pressure level of approximately 0.4 inches of water. ### Claim 3 (depends on 1) The cold room vent of claim 1 wherein said spring loaded high pressure intake valve opens upon the cold room structure reaching an air pressure level of approximately 0.7 inches of water. ### Claim 4 (depends on 2) The cold room vent of claim 2 wherein said spring loaded high pressure intake valve opens upon the cold room structure reaching an air pressure level of approximately 0.7 inches of water. ### Claim 5 (depends on 1) The cold room vent of claim 1 wherein said spring loaded low pressure intake valve has the same size and configuration as said spring loaded high pressure intake valve. ### Claim 6 A cold room vent comprising: a housing mountable to a cold room structure, said housing having a first pressure intake port, a second pressure intake port, and an exhaust port; a first pressure intake valve assembly mounted to said first pressure intake port, said first pressure intake valve assembly having a first compression spring of a first select size, shape and compression force, said first pressure intake valve assembly also having a first spring seat of a first size to create a first spring tension force upon said first pressure intake valve by said first compression spring; a second pressure intake valve assembly mounted to said second pressure intake port, said second pressure intake valve assembly having a second compression spring of a second select size, shape and compression force, said second pressure intake valve assembly also having a second spring seat of a second size to create a second spring tension force upon said second pressure intake valve by said second compression spring, said second spring tension force being greater than said first spring tension force, and an exhaust valve mounted to said exhaust port, whereby the first pressure intake valve assembly opens the first pressure intake port at a first air pressure level and the second pressure intake valve assembly opens the second pressure intake port at a second air pressure level. ### Claim 7 (depends on 6) The cold room vent of claim 6 wherein said first pressure intake valve assembly opens upon the ambient air pressure reaching approximately 0.4 inches of water. ### Claim 8 (depends on 7) The cold room vent of claim 7 wherein said second pressure intake valve assembly opens upon the ambient air pressure reaching approximately 0.7 inches of water. ### Claim 9 (depends on 6) The cold room vent of claim 6 wherein said second pressure intake valve assembly opens upon the ambient air pressure reaching approximately 0.7 inches of water. ### Claim 10 (depends on 6) The cold room vent of claim 6 wherein said first compression spring and said second compression spring are of the same size and configuration, wherein said first pressure intake valve and said second pressure intake valve are of the same size and configuration, and wherein said first spring seat and said second spring seat are of different sizes or configuration resulting in different compressions of said first and second compression springs. ### Claim 11 A cold room vent comprising: a housing mountable to a cold room structure; a select number of air pressure intake valve assemblies coupled to said housing, said select number of air pressure intake valve assemblies being at least two, and a select number of exhaust valve assemblies coupled to said housing, said select number of exhaust valve assemblies being at least one, said select number of air pressure intake valve assemblies being greater than said select number of exhaust valve assemblies, whereby the greater number of air pressure intake valve assemblies allows for greater airflow into the cold room structure than the airflow out of the cold room through the number of exhaust valve assemblies. ### Claim 12 (depends on 11) The cold room vent of claim 11 wherein said select number of air pressure intake valve assemblies comprises at least one spring loaded first pressure intake valve assembly and at least one spring loaded second pressure intake valve assembly which opens at a different air pressure level than said first pressure intake valve assembly. ### Claim 13 (depends on 12) The cold room vent of claim 12 wherein said at least one spring loaded first pressure intake valve assembly includes a first spring tension which allows the opening of said spring loaded first pressure intake valve assembly at a first air pressure level, and wherein said at least one spring loaded second pressure intake valve assembly includes a second spring tension which allows the opening of said spring loaded second pressure intake valve assembly at a second air pressure level greater than said first air pressure level. ### Claim 14 (depends on 12) The vent of claim 12 wherein said spring loaded first pressure intake valve opens upon the cold room structure reaching an air pressure level of at least 0.4 inches of water. ### Claim 15 (depends on 14) The cold room vent of claim 14 wherein said spring loaded second pressure intake valve opens upon the cold room structure reaching an air pressure level of at least 0.7 inches of water. ### Claim 16 (depends on 12) The cold room vent of claim 12 wherein said spring loaded second pressure intake valve opens upon the cold room structure reaching an air pressure level of at least 0.7 inches of water. ### Claim 17 (depends on 12) The cold room vent of claim 12 wherein said spring loaded first pressure intake valve assembly has the same size and configuration as said spring loaded second pressure intake valve assembly. ### Claim 18 (depends on 12) The cold room vent of claim 12 wherein said select number of exhaust vent assemblies is positioned between said at least one spring loaded first pressure intake valve assembly and said at least one spring loaded second pressure intake valve assembly. ### Claim 19 (depends on 12) The cold room vent of claim 12 wherein said select number of exhaust vent assemblies, said at least one spring loaded first pressure intake valve assembly and said at least one spring loaded second pressure intake valve assembly are all of the same size and configuration.