# US 11,898,731 B2 · Boundary-mountable lighting systems

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- Number: US 11,898,731 B2
- Document ID: US11898731B2
- Status: Granted
- Kind: B2
- Application number: 18/304,680
- Filed: 2023-04-21
- Published: 2023-11-30
- Granted: 2024-02-13
- Earliest claimed: 2018-05-02
- Assignees: Korrus, Inc.
- Applicants: Korrus, Inc.
- Inventors: Sana Ashraf; Jacob Hawkins; Uriel Tekunoff; Marc Webster; Yicun Wu; Robert Villegas
- Web page: https://patentgrep.com/patent/US11898731B2

## CPC

- F21V 21/30: Pivoted housings or frames
- F21V 14/02: by movement of light sources {(in vehicle head lamps F21S41/657)}
- F21V 21/29: employing universal joints
- F21V 29/70: characterised by passive heat-dissipating elements, e.g. heat-sinks
- 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

Lighting system including visible-light source with semiconductor light-emitting device, which may further include: pan assembly having pan ring, pinion gear, and central fixed gear; heat-sink, tilt assembly including tilt adjustment screw, leadscrew, and two spaced-apart panels defining tilt path for causing movement of heat-sink and visible-light source along tilt path; universal joint assembly including gimbal, swing bar with swing arms and being in threaded engagement with leadscrew, swing arms connected with visible-light source; support assembly configured for securing heat-sink and visible-light source together at plurality of selectable distances away from light emission aperture; heat-sink and visible-light source each having thermally-conductive surface, one surface having Dzus-type fastener button and another surface having Dzus-type cavity containing spring wire, for reversible attachment of heat-sink and visible-light source together; or power supply assembly, and receptacle for self-aligning reversible installation of power supply assembly, receptacle having guide walls with lead-ins.

## Claims

### Claim 1

A lighting system, comprising:
a visible-light source including a semiconductor light-emitting device, the visible-light source being configured for generating visible-light emissions having a central light emission axis from the semiconductor light-emitting device;
a tilt adjustment screw;
a leadscrew;
a universal joint assembly linking together the tilt adjustment screw and the leadscrew, the universal joint assembly including a gimbal and a swing bar having swing arms, the swing bar being in threaded engagement with the leadscrew, the tilt adjustment screw being attached to the gimbal;
wherein the swing arms are connected with the visible-light source; and
wherein the tilt adjustment screw is configured for causing the universal joint assembly to drive the leadscrew for movement of the visible-light source to a selected position along a tilt path.

### Claim 2 (depends on 1)

The lighting system of claim 1, wherein the universal joint assembly facilitates movement of the visible-light source and the leadscrew together along the tilt path while maintaining the tilt adjustment screw at a fixed location in the lighting system.

### Claim 3 (depends on 1)

The lighting system of claim 1, wherein the gymbal includes two yokes each having a pair of trunnions, the yokes being attached together by a cross for rotation in two orthogonal degrees of freedom.

### Claim 4 (depends on 3)

The lighting system of claim 3, wherein the cross is attached to both of the yokes by pins inserted in apertures of the trunnions.

### Claim 5 (depends on 3)

The lighting system of claim 3, wherein the cross is encapsulated.

### Claim 6 (depends on 3)

The lighting system of claim 3, wherein the trunnions have cut-back shoulders for defining ranges of motion in the two degrees of freedom.

### Claim 7 (depends on 1)

The lighting system of claim 1, further including a bracket being located on the leadscrew between the gymbal and the swingbar, the bracket being freely rotatable around the leadscrew, and the bracket forming an attachment of the tilt adjustment screw to the lighting system.

### Claim 8 (depends on 1)

The lighting system of claim 1, wherein the swing arms are configured for free rotation around the swing bar on an axis being perpendicular to a longitudinal axis of the leadscrew.

### Claim 9 (depends on 8)

The lighting system of claim 8, wherein the swing bar has two posts being located on opposing sides of the swing bar, and wherein each of the swing arms has an aperture being mounted on a one of the posts.

### Claim 10 (depends on 8)

The lighting system of claim 8, wherein the swing bar has two cavities being located on opposing sides of the swing bar, and wherein each of the swing arms has a post being inserted into a one of the cavities.

### Claim 11 (depends on 1)

The lighting system of claim 1, further including a locking screw being configured for locking the visible-light source at a selected position along the tilt path.