Patents by Inventor Daniel L. Loftus

Daniel L. Loftus has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 4885796
    Abstract: Included in the communication apparatus are a face mask covering the eyes, the nose, and mouth of the user and which has a frame holding a transparent viewing shield with a peripheral resilient seal on the frame bearing against the user's face. A relatively low power transmitter is positioned inside the mask adjacent to the air inlet for transmitting a short range signal carrying a communication from the user. A relatively high powered transceiver is carried on the user's person. The communication apparatus also includes a receiver also carried on the user's person tuned to receive the signal of the low powered transmitter and providing an audio output. A voice actuated switch is responsive to the output of the receiver to switch the transceiver from its receiving mode to its transmitting mode.
    Type: Grant
    Filed: April 19, 1985
    Date of Patent: December 5, 1989
    Inventors: Daniel L. Loftus, David L. Shelley