Patents by Inventor Julian D. Lynn-Evans

Julian D. Lynn-Evans 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: 4406290
    Abstract: A wrist-type pulse monitor for providing a digital readout of the rate of a heartbeat comprising a sensor adapted to detect a heartbeat in a body region where a heartbeat pulse normally occurs, a transducer coupled to the sensor for transforming each detected pulse into an electrical signal, an oscillator for producing electrical pulses at a predetermined frequency, means coupled to the transducer and the oscillator for counting the number of oscillator pulses occurring between detected heartbeats, arithmetic means coupled to the counting means for converting the heartbeat counted oscillator pulses to a heartbeat rate and means for visually displaying the heartbeat rate in digital form.
    Type: Grant
    Filed: February 17, 1981
    Date of Patent: September 27, 1983
    Inventors: John H. Walbeoffe-Wilson, Julian D. Lynn-Evans, Patrick D. Wright