# US 10,502,403 B2 · Integrated cardan mechanism for adjustable luminaires > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,403 B2 - Document ID: US10502403B2 - Status: Granted - Kind: B2 - Application number: 15/382,822 - Filed: 2016-12-19 - Published: 2017-10-19 - Granted: 2019-12-10 - Earliest claimed: 2016-04-15 - Assignees: Current Lighting Solutions, LLC - Applicants: GE Lighting Solutions, LLC - Inventors: Rita Csirmaz; Tamás Vásárhelyi - Web page: https://patentgrep.com/patent/US10502403B2 ## CPC - F21V 21/29: employing universal joints - F21V 14/02: by movement of light sources {(in vehicle head lamps F21S41/657)} - F21V 17/12: by screwing - F21V 19/02: with provision for adjustment, e.g. for focusing - F21Y 2115/10: Light-emitting diodes [LED] - F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR - F21Y: INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED ## Abstract An integrated cardan mechanism for an adjustable luminaire for a lighting system. In an embodiment, a ring component includes a generally circular ring, a first inward connector having a through hole and extending inwardly from the ring component along a first axis, a second inward connector portion having a through hole and extending inwardly from the circular ring component along the first axis opposite the first inward connector, a first outward connector comprising a through hole and a first tab and extending outwardly from the ring component along a second axis, and a second outward connector comprising a second through hole and a second tab and extending outwardly from the circular ring component along the second axis opposite the first outward connector. ## Claims ### Claim 1 An integrated ring assembly for an adjustable luminaire comprising: a ring component comprising: a generally circular ring; a first inward connector of the generally circular ring having a through hole and extending inwardly a predetermined distance from the ring component along a first axis; a second inward connector of the generally circular ring having a through hole and extending inwardly a predetermined distance from the circular ring component along the first axis opposite the first inward connector; a first outward connector of the generally circular ring comprising a through hole and a first tab and extending outwardly a predetermined distance from the ring component along a second axis; and a second outward connector of the generally circular ring comprising a second through hole and a second tab and extending outwardly a predetermined distance from the circular ring component along the second axis opposite the first outward connector; and a luminaire head comprising first and second holes positioned for accepting a first fastener inserted through the through hole of the first inward connecter and a second fastener inserted through the through hole of the second inward connector. ### Claim 2 (depends on 1) The integrated ring assembly of claim 1, further comprising a first receptacle in the first outward connector configured for accommodating a fastener component. ### Claim 3 (depends on 1) The integrated ring assembly of claim 1, further comprising a second receptacle in the second outward connector configured for accommodating a fastener component. ### Claim 4 (depends on 1) The integrated ring assembly of claim 1, wherein the first axis is in a plane of and crosses a center point of the ring component. ### Claim 5 (depends on 1) The integrated ring assembly of claim 1, wherein the second axis is in a plane of and crosses a center point of the ring component. ### Claim 6 (depends on 1) The integrated ring assembly of claim 1, wherein the first axis and the second axis are in a plane of and cross a center point of the ring component. ### Claim 7 (depends on 1) The integrated ring assembly of claim 1, wherein the first axis and the second axis are perpendicular to each other. ### Claim 8 A rotatable luminaire comprising: a luminaire housing; a cardan mechanism rotatably connected to the luminaire housing; and a light source housing rotatably connected to the cardan mechanism; wherein the cardan mechanism comprises: a generally circular ring having a first inward connector having a through hole and extending inwardly a predetermined distance from the generally circular ring along a first axis; a second inward connector of the generally circular ring having a through hole and extending inwardly a predetermined distance from the generally circular ring along the first axis opposite the first inward connector; a first outward connector of the generally circular ring comprising a through hole and a first tab and extending outwardly a predetermined distance from the generally circular ring along a second axis; and a second outward connector of the generally circular ring comprising a second through hole and a tab and extending outwardly a predetermined distance from the generally circular ring along the second axis opposite the first outward connector; and wherein the light source housing comprises: first and second holes positioned for accepting a first fastener inserted through the through hole of the first inward connecter of the generally circular ring and a second fastener inserted through the through hole of the second inward connector of the generally circular ring. ### Claim 9 (depends on 8) The rotatable luminaire of claim 8, wherein the first inward connector and the second inward connector are configured for holding the light source housing without any additional spacers inside of the generally circular ring such that a light source within the light source housing can be rotated about the first axis. ### Claim 10 (depends on 8) The rotatable luminaire of claim 8, further comprising a first receptacle in the first outward connector configured for accommodating a first fastener component. ### Claim 11 (depends on 10) The rotatable luminaire of claim 10, wherein the first fastener component is a locknut configured to snugly fit into the first receptacle. ### Claim 12 (depends on 8) The rotatable luminaire of claim 8, further comprising a second receptacle in the second outward connector configured for accommodating a second fastener component. ### Claim 13 (depends on 12) The rotatable luminaire of claim 12, wherein the second fastener component is a locknut configured to snugly fit into the second receptacle. ### Claim 14 (depends on 8) The rotatable luminaire of claim 8, wherein the first axis is in a plane of and crosses a center point of the ring component. ### Claim 15 (depends on 8) The rotatable luminaire of claim 8, wherein the second axis is in a plane of and crosses a center point of the ring component. ### Claim 16 (depends on 8) The rotatable luminaire of claim 8, wherein the first axis and the second axis are in a plane of and cross a center point of the ring component. ### Claim 17 (depends on 8) The rotatable luminaire of claim 8, wherein the first axis and the second axis are perpendicular to each other. ### Claim 18 (depends on 8) The rotatable luminaire of claim 8, wherein the first tab and the second tab are configured for movement within openings having predefined dimensions in walls of the luminaire housing, such that the predefined dimensions of the openings define the rotation range of the light source housing when rotated about the second axis. ### Claim 19 (depends on 8) The rotatable luminaire of claim 8, wherein the first and second fasteners comprise screws. ### Claim 20 (depends on 8) The rotatable luminaire of claim 8, wherein the first and second fasteners have end portions that are smooth round surfaces.