Water-proof electronic sound and light toothbrush

• US 6,154,912 A
• Filed: 12/13/1999
• Issued: 12/05/2000
• Est. Priority Date: 12/24/1998
• Status: Expired due to Fees

• Current Assignee: Hun-Pien Li
• Original Assignee: Hun-Pien Li
• Inventors: Li, Hun-Pien
• Primary Examiner(s): Chin, Randall E.
• Application Number:
  US09/459,491
• Time in Patent Office: 358 Days
• Field of Search: 15/105, 15/167.1
• US Class Current: 15/105
• CPC Class Codes: A46B 15/0002 Arrangements for enhancing monitoring or controlling the brushing process
• CPC Class Codes: A46B 15/0042 with musical signalling means
• CPC Class Codes: A46B 15/0044 with light signalling means A46B15/0034, A46B15/0036 takes precedence

Abstract

A water-proof electronic sound and light tooth brush including a handle and a brush head. The handle is a hollow body formed from a light permeable material, and is adapted to receive a sound and light control device. A tail end thereof is provided with a resonance box. The sound and light control device includes a battery adapted to provide electric power, and a contact switch for actuating a micro central processing unit. The contact switch includes a metal sleeve having an opening and accommodating therein a movable metal ball, the opening of the metal sleeve facing a metal piece remote from the metal sleeve in a non-contact relationship, such that the metal sleeve and the metal piece respectively contact the positive and negative terminals. Furthermore, the micro central processing unit is connected to a music integrated circuit and a speaker thereof. The speaker is provided near an elastic water-proof sound permeable film of the resonance box. The micro central processing unit is further connected to a large-size light emitting diode, and an array of small-sized light emitting diodes, such that the large-size LED is disposed in a hollow connecting portion between the handle and the brush head.

Claims

1. A water-proof, electronic sound and light tooth brush, comprising a handle and a brush head, wherein

said handle is a hollow body formed from a light permeable material for receiving a sound and light control device, a tail end thereof being provided with internal threads for engaging a threaded portion projecting from a resonance box, said resonance box having a water-proof washer,

said resonance box being substantially hollow, and having an outer periphery provided with a through hole adapted for sound guidance and water discharge, said resonance box having an elastic water-proof sound permeable film secured inside in the vicinity of said threaded portion;

said sound and light control device including a battery adapted to provide electric power, and a contact switch for actuating a micro central processing unit, said contact switch including a metal sleeve having an opening and accommodating therein a movable metal ball, said opening of said metal sleeve facing a metal piece remote from said metal sleeve in a non-contact relationship, such that said metal sleeve and said metal piece respectively contact positive and negative terminals, said micro central processing unit being connected to a music integrated circuit and a speaker thereof, said speaker being provided near said elastic water-proof sound permeable film, said micro central processing unit being further connected to a large-size light emitting diode, and an array of small-sized light emitting diodes, such that said large-size LED is disposed in a hollow connecting portion between said handle and said brush head; and

an inner periphery of said connecting portion of said brush head is formed into a light bending flange.