On hook/off hook mechanism for wrist telephone
Johnson, Bertrand H
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Citation (published version)Greg Blonder, Bertrand H Johnson, George Knoedl. "On hook/off hook mechanism for wrist telephone." U.S. Patent 5,499,292-A.
A radiotelephone wrist device includes a case having a transceiver and a strap attached to the case for fastening the device to a user's wrist. The strap has a top layer and a bottom layer in which the top layer is releasable from the bottom layer of the strap. A microphone is located on the strap and electrically connected to the transceiver. A speaker is located at an end of the top layer of the strap and electrically connected to the transceiver. A cradle for receiving the speaker is formed in the case. A sensor located beneath the cradle detects when the speaker is removed from the cradle.