U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Wrist telephone

Patent 5239521 Issued on August 24, 1993. Estimated Expiration Date: Icon_subject May 29, 2012. 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.

Patent References

Expansion band antenna for a wristwatch application
Patent #: 4754285
Issued on: 06/28/1988
Inventor: Robitaille

Wristwatch radiotelephone
Patent #: 4847818
Issued on: 07/11/1989
Inventor: Olsen

Portable radio telephone device Patent #: 5008864
Issued on: 04/16/1991
Inventor: Yoshitake

Inventor

Assignee

Application

No. 891359 filed on 05/29/1992

US Classes:

368/10, COMBINED WITH DISPARATE DEVICE368/282With band or bracelet details

Examiners

Primary: Roskoski, Bernard

Attorney, Agent or Firm

International Class

G04B 037/00

Abstract

A portable radio telephone device which is in the form of a wristwatch which is fastened to the user's wrist via a strap. The telephone device is comprised of two main components, a case and a strap. The case has a display and a transceiver. The strap or band has at least a top and a bottom layer which are attached to the case. The top layer of the band is releasable in the proximity where the case and strap meet. However, the top layer remains connected to the bottom layer of the strap by a pivotable hinge. The pivotable hinge is typically located opposite the case and permits the top layer to be rotated. The length of the top layer can be increased either by repositioning the case or having additional layers located beneath the top layer. The speaker is located on the end of the released top layer. The microphone is located on the band. When the top layer is released and rotated, the speaker is located in the palm of the user's hand and the microphone is positioned along the inside of the user's forearm. This design provides for a private telephone conversation without the removal of the telephone device from the user's wrist.

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