Patents by Inventor Thomas L. Polley

Thomas L. Polley 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).

  • Personal alarm
    Patent number: 4262285
    Abstract: A personal alarm device which provides for both intermittent actuation of a personal alarm as well as irreversible actuation of such alarm by the provision of multiple actuation modes including a positive displacement device which is lever and spring controlled to move a pin within the device out of restraining engagement with an alarm actuator mechanism in a manner which will prevent deactivation of the alarm by return of the pin to its previous position.
    Type: Grant
    Filed: March 17, 1980
    Date of Patent: April 14, 1981
    Inventor: Thomas L. Polley