# US 2021/0278052 A1 · Flashlight with multiple light sources

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- Number: US 2021/0278052 A1
- Document ID: US20210278052A1
- Status: Published application
- Kind: A1
- Application number: 17/325,441
- Filed: 2021-05-20
- Published: 2021-09-09
- Earliest claimed: 2019-08-26
- Assignees: Emissive Energy Corp.
- Applicants: Emissive Energy Corp.
- Inventors: Robert D. Galli; Christopher J. O'Brien; Mikhail T. Hyde
- Web page: https://patentgrep.com/patent/US20210278052A1

## CPC

- F21L 4/027: {the light sources being a LED}
- F21L 4/005: {the device being a pocket lamp (F21L4/022, F21L4/045, F21L4/085 take precedence)}
- F21L 4/025: {the light sources being of different shape or type}
- F21L 4/045: {Pocket lamps}
- F21V 19/04: with provision for changing light source, e.g. turret {(auxiliary devices for cleaning, placing, or removing incandescent lamps H01K3/32, fluorescent lamps H01J9/006)}
- F21V 23/0428: {the switch being part of, or disposed on the lamp head portion thereof}
- F21Y 2115/10: Light-emitting diodes [LED]
- F21L: LIGHTING DEVICES OR SYSTEMS THEREOF, BEING PORTABLE OR SPECIALLY ADAPTED FOR TRANSPORTATION
- 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

The present disclosure generally relates to lights and flashlights, and more specifically to a handheld flashlight which has at least two LED light sources and the ability to change between the light sources by twisting the head portion of the flashlight.

## Claims

### Claim 1

A flashlight assembly comprising:
a housing;
a yoke assembly comprising,
a yoke body affixed to the housing, said yoke body having a central axis, and a transverse guide slot,
a yoke plate slidably captured in the transverse guide slot, said yoke plate further including a drive slot, and
a first LED and a second LED both mounted to said yoke plate in spaced relation and aligned with the transverse guide slot; and
a head assembly rotatably assembled with the housing and having a focal axis coaxially aligned with said yoke central axis,
said head assembly including a drive pin extending from a rearward end thereof,
said drive pin engaging said drive slot in said yoke plate wherein rotation of said head assembly relative to said yoke assembly causes a corresponding sliding movement of said yoke plate.

### Claim 2 (depends on 1)

The flashlight assembly of claim 1 wherein said guide slot encompasses a transverse line extending across said yoke body and through said central axis.

### Claim 3 (depends on 2)

The flashlight assembly of claim 2 wherein said drive slot is offset from said central axis and extends perpendicular to said transverse line.

### Claim 4 (depends on 2)

The flashlight assembly of claim 2 wherein said first LED and said second LED are aligned on said transverse line.

### Claim 5 (depends on 3)

The flashlight assembly of claim 3 wherein said first LED and said second LED are aligned on said transverse line.

### Claim 6 (depends on 1)

The flashlight assembly of claim 1 wherein said head assembly includes a reflector cup, said reflector cup defining said focal axis.

### Claim 7 (depends on 2)

The flashlight assembly of claim 2 wherein said head assembly includes a reflector cup, said reflector cup defining said focal axis.

### Claim 8 (depends on 4)

The flashlight assembly of claim 4 wherein said head assembly includes a reflector cup, said reflector cup defining said focal axis.

### Claim 9 (depends on 1)

The flashlight assembly of claim 1 further comprising a receiver ring secured to an upper end of said housing, said yoke body affixed to said receiver ring.

### Claim 10 (depends on 9)

The flashlight assembly of claim 9, further comprising a grip ring secured about said head assembly and rotatably received about the upper end of said housing and said receiver ring.

### Claim 11 (depends on 1)

The flashlight assembly of claim 1 wherein said yoke body further comprises an arcuate detent slot, and said head assembly including a detent pin which rides within said detent slot, said detent slot having detents therein to define said first and second positions.

### Claim 12 (depends on 1)

The flashlight assembly of claim 1 wherein said first and second LED's are mounted on a carrier circuit board mounted on an upper surface of said yoke plate, said flashlight further including a control circuit board mounted on said yoke body, and a flex circuit connecting said carrier circuit board with said control circuit board.

### Claim 13 (depends on 12)

The flashlight of claim 12 wherein said flex circuit extends through a slot in said yoke plate.

### Claim 14 (depends on 6)

The flashlight assembly of claim 6 wherein said first and second LED's are mounted on a carrier circuit board mounted on an upper surface of said yoke plate, said flashlight further including a control circuit board mounted on said yoke body, and a flex circuit connecting said carrier circuit board with said control circuit board.

### Claim 15 (depends on 14)

The flashlight of claim 14 wherein said flex circuit extends through a slot in said yoke plate.

### Claim 16 (depends on 11)

The flashlight assembly of claim 11 wherein said first and second LED's are mounted on a carrier circuit board mounted on an upper surface of said yoke plate, said flashlight further including a control circuit board mounted on said yoke body, and a flex circuit connecting said carrier circuit board with said control circuit board.

### Claim 17 (depends on 16)

The flashlight of claim 16 wherein said flex circuit extends through a slot in said yoke plate.