# US 8,769,754 B2 · Electric toothbrush

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- Number: US 8,769,754 B2
- Document ID: US8769754B2
- Status: Granted
- Kind: B2
- Application number: 13/953,246
- Filed: 2013-07-29
- Published: 2013-11-21
- Granted: 2014-07-08
- Earliest claimed: 2010-04-08
- Assignees: LG Innotek Co., Ltd.
- Applicants: LG Innotek Co., Ltd.
- Inventors: Daegil Byeon
- Web page: https://patentgrep.com/patent/US8769754B2

## CPC

- A61C 17/3481: {Vibrating brush body, e.g. by using eccentric weights}
- A61C 17/225: {Handles or details thereof}
- A61C 17/32: reciprocating or oscillating
- A61C: DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE (non-driven toothbrushes A46B; {tongue scrapers A61B17/24;} preparations for dentistry A61K6/00; preparations for cleaning the teeth or mouth A61K8/00, A61Q11/00)

## Abstract

Disclosed is an electric toothbrush including a toothbrush plate having a cleaning brush installed thereon; a toothbrush head having a storage within which the toothbrush plate is stored; a toothbrush body that is connected to the toothbrush head and has a storage space formed therein; a flat type vibration motor that is disposed between the toothbrush plate and the toothbrush head; and a power supply unit that includes a power supply that is disposed in the storage space of the toothbrush body and supplies the vibration motor with power, a power supply switch connected to the power supply and a wire that is electrically connected to the vibration motor and the power supply switch and supplies the vibration motor with power.

## Claims

### Claim 1

An electric toothbrush, comprising:
a toothbrush plate having a cleaning brush installed thereon;
a toothbrush head having a storage within which the toothbrush plate is stored;
a toothbrush body that is connected to the toothbrush head and has a storage space formed therein;
a vibration motor that is disposed between the toothbrush plate and the toothbrush head;
a power supply unit that includes a power supply that is disposed in the storage space of the toothbrush body and supplies the vibration motor with power, a power supply switch connected to the power supply and a wire that is electrically connected to the vibration motor and the power supply switch and supplies the vibration motor with power;
an adhesive member to glue the toothbrush head and the toothbrush plate together; and
a waterproof member to cover and protect the vibration motor;
wherein the toothbrush head has a vibration motor storage groove to store the vibration motor, and
wherein a wire storage groove to store a wire that is electrically connected to the vibration motor is formed on the surface of the toothbrush body, and the wire storage groove is engaged with a sealing member to seal the wire storage groove.

### Claim 2 (depends on 1)

The electric toothbrush according to claim 1, wherein the vibration motor is formed in a flat coin shape.

### Claim 3 (depends on 1)

The electric toothbrush according to claim 1, wherein the power supply switch includes:
a first switch contact button disposed in the toothbrush body;
a second switch contact button disposed in the toothbrush body and facing the first switch contact button; and
a switch portion that is disposed in the storage space of the toothbrush body and is electrically connected by a pressure applied to the first and second switch buttons.