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HEARTBEAT RATE MONITORS

  • US 3,807,388 A
  • Filed: 08/16/1971
  • Issued: 04/30/1974
  • Est. Priority Date: 09/29/1970
  • Status: Expired due to Term
First Claim
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1. A body worn, compact heartbeat rate monitor comprising:

  • a transducer to detect heartbeats and provide an electric signal the frequency of which corresponds to the heartbeat rate;

    compact timing means to produce an electric timing signal;

    comparison means connected in circuit with said transducer and timing means so as to compare the transducer signal with said timing signal to produce a heartbeat rate signal which represents the heartbeat rate per unit time;

    a wrist watch type casing within which said compact timing means and said comparison means are incorporated; and

    first and second display means operably connected with said circuit and mounted in said watch casing so as to be visible to a user;

    the first display means being operable in dependence on said timing sIgnal to display the time of day, and the second display means being operable in dependence on said heartbeat rate signal to directly display the heartbeat rate.

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