Radio transmitter and receiver device having a headset with speaker and microphone

Patent 4654883 Issued on March 31, 1987. Estimated Expiration Date:

March 31, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

3122847

3908097

Headset for receiving and transmitting signals
Patent #: 4017797
Issued on: 04/12/1977
Inventor: Laessig

Ambient noise shielded ear transceiver
Patent #: 4025734
Issued on: 05/24/1977
Inventor: Aloupis

Headset construction
Patent #: 4138598
Issued on: 02/06/1979
Inventor: Cech

Piezoelectric bone conductive in ear voice sounds transmitting and receiving apparatus
Patent #: 4150262
Issued on: 04/17/1979
Inventor: Ono

Wireless transmitting and receiving systems including ear microphones Patent #: 4334315
Issued on: 06/08/1982
Inventor: Ono , et al.

Inventor

Iwata, Keisuke

Assignee

Iwatsu Electric Co., Ltd.

Application

No. 06/556078 filed on 11/29/1983

US Classes:

381/380, Ear insert or bone conduction379/430, Body supported (e.g., headgear)381/151, Body contact wave transfer (e.g., bone conduction earphone, larynx microphone)455/575.2, Headgear455/90.3Having particular housing or support of a transceiver

Examiners

Primary: Ng, Jin F.

Attorney, Agent or Firm

International Class

H04B 1/38 (20060101)

Foreign Application Priority Data

1983-10-18 JP

Abstract

A radio transmitter and receiver device in which a head band has a transmitting microphone at one end and a receiving speaker at the other end. This microphone comprises a bone transmission type microphone for detecting aural oscillation of an external auditory canal transmitted through a bone tissue of a head portion from a mouth, said microphone being brought into contact with a side head portion at the rear of an ear. Thus, one ear is blocked by the speaker but the other ear is open, and therefore, a user can catch noises thereabout. A transmitting and receiving antenna has matching means and is mounted on the side of the speaker.