# US 2019/0376673 A1 · Luminaire Retention > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0376673 A1 - Document ID: US20190376673A1 - Status: Published application - Kind: A1 - Application number: 16/551,487 - Filed: 2019-08-26 - Published: 2019-12-12 - Earliest claimed: 2013-10-15 - Assignees: Eaton Intelligent Power Limited - Applicants: Eaton Intelligent Power Limited - Inventors: Grzegorz Wronski; Zhihong Lin; Steven Pyshos - Web page: https://patentgrep.com/patent/US20190376673A1 ## CPC - F21V 21/04: Recessed bases - F21S 8/02: of recess-mounted type, e.g. downlighters (specially adapted for vehicle exteriors F21S41/00-F21S45/00) - F21S 8/026: {intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling} - F21V 21/042: {using clamping means, e.g. for clamping with panel or wall} - F21V 21/047: {Mounting arrangements with fastening means engaging the inner surface of a hole in a ceiling or wall, e.g. for solid walls or for blind holes} - F21V 21/02: Wall, ceiling, or floor bases; Fixing pendants or arms to the bases (F21V21/08 takes precedence; bases for movable standing lamps F21V21/06) - F21V 21/03: Ceiling bases, e.g. ceiling roses (F21V21/04 takes precedence) - F21V 21/049: {Mounting arrangements for attaching lighting devices to the ceiling, the lighting devices being recessed in a false or stretched ceiling} - F21V 21/06: Bases for movable standing lamps; Fixing standards to the bases (F21V21/08 takes precedence) - Y10T 29/49963: Threaded fastener - 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 - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract A retention structure for retaining a recessed lighting fixture behind a ceiling includes an attachment structure that has a first wall and a second wall. The attachment structure is designed to be attached to a housing of a recessed light fixture. The retention structure further includes a screw attached to the first wall of the attachment structure and to the second wall of the attachment structure. The retention structure also includes a pawl attached to the threaded screw. The pawl is rotatable along with the threaded screw. The pawl is also axially movable along the threaded screw between the first wall of the attachment structure and the second wall of the attachment structure. ## Claims ### Claim 1 A lighting structure for a recessed lighting fixture, the lighting structure comprising: a housing having an opening, the opening including a horizontal slot and a vertical slot, the vertical slot intersecting the horizontal slot; and a retention structure attached to the housing, the retention structure to retain the lighting structure recessed into a ceiling, wherein the retention structure includes: a wall segment positioned within the housing; a tension spring segment positioned outside of the housing, the tension spring segment extending out from a first end portion of the wall segment; and an end segment having a wide segment and a narrow segment, the narrow segment coupled to a second end portion of the wall segment, wherein the wide segment of the end segment is positioned outside of the housing by extending the wide segment of the end segment through the horizontal slot of the opening of the housing, and wherein the narrow segment of the end segment extends through the vertical slot of the opening of the housing. ### Claim 2 (depends on 1) The lighting structure of claim 1, wherein the wall segment is positioned against an inner wall of the housing. ### Claim 3 (depends on 1) The lighting structure of claim 1, wherein the wide segment of the end segment is wider than the vertical slot of the opening of the housing. ### Claim 4 (depends on 1) The lighting structure of claim 1, wherein the tension spring segment curves down from the first end portion of the wall segment. ### Claim 5 (depends on 1) The lighting structure of claim 1, wherein a flange of the tension spring segment rests on a back side of the ceiling below the horizontal slot of the opening of the housing. ### Claim 6 (depends on 1) The lighting structure of claim 1, wherein the housing includes a second opening having a second horizontal slot and a second vertical slot and wherein the second vertical slot intersects the second horizontal slot. ### Claim 7 (depends on 1) The lighting structure of claim 1, wherein a torsion spring receiver extends out from the wall segment toward a center of the housing. ### Claim 8 (depends on 1) The lighting structure of claim 1, wherein the narrow segment of the end segment includes a first vertical segment, a horizontal segment, and a second vertical segment, wherein the first vertical segment extends from the second end portion of the wall segment, wherein the horizontal segment extends between the first vertical segment and the second vertical segment, and wherein the second vertical segment is coupled to the wide segment of the end segment. ### Claim 9 (depends on 1) The lighting structure of claim 1, wherein the horizontal slot of the opening of the housing is above the vertical slot of the opening of the housing when the lighting structure is recessed in a ceiling. ### Claim 10 A lighting structure for a recessed lighting fixture, the lighting structure comprising: a housing having an opening, the opening including a horizontal slot and a vertical slot, the vertical slot intersecting the horizontal slot; and a retention structure to retain the lighting structure recessed into a ceiling, wherein the retention structure includes: a wall segment to be positioned inside the housing; a tension spring segment extending out from a first end portion of the wall segment, the tension spring segment to be positioned outside of the housing, wherein the tension spring segment is sized to pass through the horizontal slot of the opening of the housing from within the housing; and an end segment having a wide segment and a narrow segment, the narrow segment coupled to a second end portion of the wall segment, wherein the wide segment of the end segment is to be positioned outside of the housing by passing the wide segment of the end segment through the horizontal slot of the opening of the housing from within the housing, and wherein the narrow segment of the end segment is sized to extend through the vertical slot of the opening of the housing. ### Claim 11 (depends on 10) The lighting structure of claim 10, wherein the wall segment is positioned against an inner wall of the housing. ### Claim 12 (depends on 10) The lighting structure of claim 10, wherein the wide segment of the end segment is wider than the vertical slot of the opening of the housing. ### Claim 13 (depends on 10) The lighting structure of claim 10, wherein the tension spring segment curves down from the first end portion of the wall segment. ### Claim 14 (depends on 10) The lighting structure of claim 10, wherein a flange of the tension spring segment is designed to rest on a back side of the ceiling below the horizontal slot of the opening of the housing. ### Claim 15 (depends on 10) The lighting structure of claim 10, wherein the housing includes a second opening having a second horizontal slot and a second vertical slot and wherein the second vertical slot intersects the second horizontal slot. ### Claim 16 (depends on 10) The lighting structure of claim 10, wherein a torsion spring receiver extends out from the wall segment toward a center of the housing. ### Claim 17 (depends on 10) The lighting structure of claim 10, wherein the narrow segment of the end segment includes a first vertical segment, a horizontal segment, and a second vertical segment, wherein the first vertical segment extends from the second end portion of the wall segment, wherein the horizontal segment extends between the first vertical segment and the second vertical segment, and wherein the second vertical segment is coupled to the wide segment of the end segment. ### Claim 18 (depends on 10) The lighting structure of claim 10, wherein the horizontal slot of the opening of the housing is above the vertical slot of the opening of the housing when the lighting structure is recessed in a ceiling.