Patents by Inventor Edward A. Doran

Edward A. Doran 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: 5220152
    Abstract: An electrical lock thawing device includes a housing formed from a water-proof rubber material and enclosing a rechargeable battery and an electrical heating element. A switch on the housing is operative to selectively connect the battery to the heating element and a removable elongated blade extends through a slot in an end wall of the housing. The blade is heated by the heating element and is insertable into a key slot of a frozen lock. An electrical plug on a rotatable cylindrical member is mounted for movement between extended and retracted positions with respect to the housing and serves to connect the rechargeable battery to a conventional AC outlet. A resilient detent member selectively actuated by a spring-biased push button is operative to secure the rotatable plug in a selected position. The removable thawing blade may be formed in a variety of different key configurations for use in various different locks. A spring ball detent is utilized to removably retain the blade within the housing.
    Type: Grant
    Filed: November 15, 1989
    Date of Patent: June 15, 1993
    Inventor: Edward A. Doran