# US 10,311,852 B2 · Two tone whistle

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- Number: US 10,311,852 B2
- Document ID: US10311852B2
- Status: Granted
- Kind: B2
- Application number: 15/604,828
- Filed: 2017-05-25
- Published: 2019-03-28
- Granted: 2019-06-04
- Earliest claimed: 2017-05-25
- Applicants: Dale Roe
- Inventors: Dale Roe
- Web page: https://patentgrep.com/patent/US10311852B2

## CPC

- G10K 5/00: Whistles
- G08B 3/02: using only mechanical transmission
- G08B 3/06: using hydraulic transmission; using pneumatic transmission
- G09F 9/00: Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements (in which the variable information is permanently attached to a movable support G09F11/00; abacus G06C1/00; slide-rules G06G1/00)
- G10K: SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G08B: SIGNALLING SYSTEMS, e.g. PERSONAL CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G09F: DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS

## Abstract

A two-tone whistle that alters an audible patch that reduces confusion when multiple athletic events are played with whistles being blown during the multiple athletic events. The two-tone whistle includes a mouthpiece, a resonate chamber, a ball, a lever and a lanyard aperture. The slotted edge is integral to the lever and is adapted to move up or down as the lever moves up or down producing a first audible pitch and a second audible pitch, wherein the first audible pitch is lower than the second audible pitch.

## Claims

### Claim 1

A two-tone whistle, comprising:
a mouthpiece adapted to be blown into by a person to generate an audible pitch;
a resonate chamber receiving air blown into the mouthpiece;
a ball contained within a semi-circular interior portion of the resonate chamber;
a toggle lever disposed on an exterior side portion of the resonate chamber, the toggle lever is adapted to control the audible pitch by moving the toggle lever up or down;
a lanyard aperture receiving a lanyard that is adapted to insert the lanyard through the lanyard aperture; and
a slotted edge placed above the ball contained within the resonate chamber, the slotted edge is integral to the toggle lever, the slotted edge is adapted to move up as the toggle lever moves up and is adapted to move down as the toggle lever moves down, the audible pitch is produced by the ball that is adapted to vibrate within the semi-circular portion of the resonate chamber against the slotted edge from the received blown air.

### Claim 2 (depends on 1)

The two-tone whistle according to claim 1, wherein the ball is made of cork.

### Claim 3 (depends on 2)

The two-tone whistle according to claim 2, wherein the ball is made of synthetic cork.

### Claim 4 (depends on 1)

The two-tone whistle according to claim 1, wherein the slotted edge is adapted to move up, the ball travels further within the resonate chamber and produces a first audible pitch.

### Claim 5 (depends on 4)

The two-tone whistle according to claim 4, wherein the slotted edge is adapted to move down, the ball travels a shorter distance within the resonate chamber and it produces a second audible pitch.

### Claim 6 (depends on 5)

The two-tone whistle according to claim 5, wherein the first audible pitch is lower than the second audible pitch.

### Claim 7 (depends on 1)

The two-tone whistle according to claim 1, wherein the two-tone whistle is made of plastic.

### Claim 8 (depends on 1)

The two-tone whistle according to claim 1, wherein the two-tone whistle is made of metal.

### Claim 9

A two-tone whistle, comprising:
a mouthpiece adapted to be blown into by a person to generate an audible pitch;
a resonate chamber having a semi-circular interior portion, the resonate chamber receiving air blown into the mouthpiece;
a toggle lever disposed on an exterior side portion of the resonate chamber, the toggle lever controls the audible pitch by moving the toggle lever up or down;
a lanyard aperture receives a lanyard and inserts the lanyard through the lanyard aperture; and
a slotted edge, the slotted edge is integral to the toggle lever.