# US 9,752,765 B2 · Fire rated recessed lighting assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,752,765 B2 - Document ID: US9752765B2 - Status: Granted - Kind: B2 - Application number: 14/677,979 - Filed: 2015-04-03 - Published: 2016-08-18 - Granted: 2017-09-05 - Earliest claimed: 2015-02-16 - Assignees: Elite Lighting - Applicants: Elite Lighting - Inventors: Hamid Rashidi Doust - Web page: https://patentgrep.com/patent/US9752765B2 ## CPC - F21V 25/125: {using intumescent material, i.e. using materials which swells up as a result of heat exposure} - F21S 8/026: {intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling} - F21V 25/02: coming into action when lighting device is disturbed, dismounted, or broken - F21V 29/83: the elements having apertures, ducts or channels, e.g. heat radiation holes - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - F21S: NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS ## Abstract Provided is a fire rated or resistant recessed lighting assembly including a metal housing inside of which a lighting unit is placed, the housing being fire resistant for 120 minutes when tested according ASTM E119-12a without a protective fire resistant cover on outside of the housing. The fire resistant recessed lighting assembly can include a metal housing inside of which a light is placed and one or both of: i) an object made of a fire resistant material, such as an intumescent material, placed inside of the housing in between a trim and a closed end of the housing; and ii) an ring made of a fire resistant material, such as an intumescent material, placed outside of the housing, wherein in event of a fire, the intumescent material expands to slow spread of the fire. ## Claims ### Claim 1 A recessed lighting assembly comprising: a) a metal housing inside of which a source of light is placed, the metal housing having an open and a closed end; b) a member comprised of a flange portion and a tubular portion, the tubular portion configured to be attached to the metal housing at the open end, the flange portion extending radially and outwardly from the open end of the housing, the member configured to contact a ceiling in which the recessed lighting assembly is installed; c) a trim placed inside of the housing in between the open end and the close end of the housing; d) a socket, electronically connected to an electric cable, placed inside of the housing configured to receive a source of light; and e) a metal disc placed inside of the housing in between the trim and the closed end of the housing, the metal disc having a central opening configured for passage of the socket or the electric cable; wherein the metal disc is configured to support a disc made from a fire resistant material placed on top of the metal disc in between the metal disc and the closed end of the housing, the fire resistant material selected from the group consisting of one or more of halogen based, phosphorous based, graphite, and intumescent. ### Claim 2 (depends on 1) The recessed lighting assembly claim 1, wherein the tubular part of the member is complementary to an inside of the open end of the housing, and is placed inside of the housing. ### Claim 3 (depends on 1) The recessed lighting assembly of claim 1, wherein the housing has one or more fasteners that cross a wall of the housing in proximity to the open end, the member configured to be detachably attached to the fastener. ### Claim 4 (depends on 1) The recessed lighting assembly of claim 1, wherein the housing has one or more slots configured to allow the housing to slide against a frame. ### Claim 5 (depends on 1) The recessed lighting assembly of claim 1, wherein the member has a cut portion on the tubular portion that is complementary to the slot. ### Claim 6 (depends on 1) The recessed lighting assembly of claim 1, further comprising one or more bar hangers attached to the frame configured to allow attachment of the recessed lighting assembly to one or more joists. ### Claim 7 (depends on 1) The recessed lighting assembly of claim 1, wherein the open end of the housing and one or more side openings of the housing are sealed in an event of a fire. ### Claim 8 (depends on 1) The recessed lighting assembly of claim 1, wherein the metal disc has a diameter of 110 mm to 150 mm. ### Claim 9 (depends on 1) The recessed lighting assembly of claim 1, wherein the metal disc has a thickness of 1 mm to 3 mm. ### Claim 10 (depends on 1) The recessed lighting assembly of claim 1, wherein the tubular portion has a height of 3 cm to 5 m. ### Claim 11 (depends on 1) The recessed lighting assembly of claim 1, wherein the flange has a length of 1 cm to 1.5 cm. ### Claim 12 A recessed lighting assembly comprising: a) a metal housing inside of which a source of light is placed, the metal housing having an open and a closed end, the metal housing having one or more slots in proximity to the open end; b) a frame adjustably attached to the metal housing, through the slots; c) a member comprised of a flange portion and a tubular portion, the tubular portion configured to be attached to the metal housing at the open end, the flange portion extending radially and outwardly from the open end of the housing, the member having cut portions in the tubular portions that complement the slots on the housing; d) a trim placed inside of the housing in between the open end and the close end of the housing, e) a socket, electronically connected to an electric cable, placed inside of the housing configured to receive a source of light; f) a metal disc placed inside of the housing in between the trim and the closed end of the housing, the metal disc having a central opening configured for passage of the socket or the electric cable; and g) one or more bar hangers attached to the frame configured to allow attachment of the recessed lighting assembly to a support structure; wherein the metal disc is configured to support a disc made from a fire resistant material placed on top of the metal disc in between the metal disc and the closed end of the housing, the fire resistant material selected from the group consisting of one or more of halogen based, phosphorous based, graphite, and intumescent.