Wireless headphone

Patent 5095382 Issued on March 10, 1992. Estimated Expiration Date:

March 14, 2010. 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

Apparatus for wireless transmission of a teaching program in a classroom
Patent #: 4229829
Issued on: 10/21/1980
Inventor: Grunwald

Speakerphone with wireless infrared microphone
Patent #: 4543665
Issued on: 09/24/1985
Inventor: Sotelo , et al.

Infrared headphones for the hearing impaired
Patent #: 4633498
Issued on: 12/30/1986
Inventor: Warnke , et al.

Three position switch for portable, rechargeable device
Patent #: 4647832
Issued on: 03/03/1987
Inventor: Fenne , et al.

Wireless stereo headphone
Patent #: 4845751
Issued on: 07/04/1989
Inventor: Schwab

Infrared stereo speaker system
Patent #: 4899388
Issued on: 02/06/1990
Inventor: Mlodzikowski, et al.

Headband radiophone combination set Patent #: 4930148
Issued on: 05/29/1990
Inventor: Lee

Inventor

Abe, Kensasku

Assignee

Sony Corporation

Application

No. 493289 filed on 03/14/1990

US Classes:

398/202, RECEIVER320/107, CELL OR BATTERY CHARGER STRUCTURE381/309, Stereo earphone381/311, Wireless or for use in diverse381/378, Single band381/384, Electrical hardware feature398/118, OPTICAL COMMUNICATION OVER FREEE SPACED14/205Headphone or headset

Examiners

Primary: Eisenzopf, Reinhard J.
Assistant: Negash, Kinfe-Michael

Attorney, Agent or Firm

Sinderbrand; Alvin, Frommer; Wiliam S.

Foreign Patent References

1591095 DE 12/13/1970
2431937 DE 01/13/1976
2652101 DE 05/13/1978
3406809 DE. 09/13/1985
3607885 DE. 09/13/1987
2151870 GB. 07/13/1985

International Class

H04B 010/00

Foreign Application Priority Data

1989-03-20 JP

Abstract

A wireless headphone in which an infra-red light signal transmitted from a transmitting apparatus is received and reproduced as an audible sound by a headphone unit portion. A first light receiving element is provided on a top portion of a head band portion of the headphone so that, when a listener wears the wireless headphone, a light receiving surface included in the first light receiving element is directed rearward. Second and third light receiving elements are provided on the pair of headphone unit portions so that, when the listener wears the wireless headphone light receiving surfaces included in the second and third light receiving elements are directed forward.