Patents by Inventor Ian H. Davidson

Ian H. Davidson 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).

  • Apparatus for detecting probe dislodgement
    Patent number: 4399824
    Abstract: A loose probe alarm in which a temperature responsive element (14) arranged for attachment to a body is periodically heated (20, 22, 26) and the effects of self-heating of the temperature responsive element are monitored (32, 36, 38) to determine whether the temperature responsive element has been dislodged from the body. The alarm is arranged to sense the difference in the amount of heat dissipated by the temperature responsive element when it remains in contact with the body to which it has been attached and when it has been dislodged from this body.
    Type: Grant
    Filed: October 5, 1981
    Date of Patent: August 23, 1983
    Assignee: Air-Shields, Inc.
    Inventor: Ian H. Davidson