Earphone for an RF transmitting device

• US 6,411,722 B1
• Filed: 05/11/2000
• Issued: 06/25/2002
• Est. Priority Date: 05/11/2000
• Status: Expired due to Fees

• Current Assignee: Dan Wolf
• Original Assignee: Dan Wolf
• Inventors: Wolf, Dan
• Primary Examiner(s): LE, HUYEN D
• Application Number:
  US09/569,040
• Time in Patent Office: 775 Days
• Field of Search: 381/370, 381/371, 381/374, 381/380, 381/381, 381/382, 381/328, 381/338, 381/FOR.133, 381/FOR.149, 181/129, 181/130, 181/135, 455/575, 455/300, 455/301, 361/814, 361/816
• US Class Current: 381/371
• CPC Class Codes: H04R 1/1016 Earpieces of the intra-aural type
• CPC Class Codes: H04R 1/1058 Manufacture or assembly

Abstract

An acoustic earphone for transmitting sound from a transducer sound source, the earphone comprising a sound transmitting tube portion extending between an ear tip member for engaging the external ear canal of a user, and a sound receiving end fitted to said sound source. A faraday cage is fitted over the sound source.

Claims

1. An acoustic earphone assembly for transmitting sound from a transducer sound source, constituted by an earphone connected by wires to a cellular phone provided with a transmitter that radiates radio-frequency energy, said assembly comprising:

a sound transmitting tube extending between an ear tip member for engaging the external ear canal of a user of the cellular phone, and a sound receiving end fitted to said sound source, and

a Faraday cage enveloping the earphone to interpose a radio-frequency protective shield between the earphone and the user.

2. An acoustic earphone according to claim 1, wherein at use the sound source is retained at a distance from the user'"'"'s head.

3. An acoustic earphone according to claim 2, wherein the distance is at least about 4 cm.

4. An acoustic earphone according to claim 2, wherein the length of the sound transmitting tube portion is at least about 4 cm.

5. An acoustic earphone according to claim 1, wherein the ear tip is fitted for self retaining in the external ear canal of the user.

6. An acoustic earphone according to claim 1, wherein the ear tip provides acoustic isolation from environmental noise.

7. An acoustic earphone according to claim 1, wherein the sound receiving end is integrally formed or fixedly attached to the sound source.

8. An acoustic earphone according to claim 1, wherein the sound receiving end is removably attached to the sound source.

9. An acoustic earphone according to claim 8, wherein the sound receiving end is fitted with a receptacle portion for snugly receiving the sound source.

10. An acoustic earphone according to claim 1, wherein the ear tip comprises a deformable portion for adapting to the shape of the user'"'"'s ear.

11. An acoustic earphone according to claim 1, wherein there is further provided an auricle-attachment member for retaining the ear tip with the external ear canal of the user.