Patents by Inventor Robert L. Dow

Robert L. Dow 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).

  • Electromagnetic and electrostatic insensitive blasting caps, squibs and detonators
    Patent number: 4378738
    Abstract: A broad band attenuator having a ferrite material for absorption of stray electromagnetic radiation minimizes the unintentional initiation of electroexplosive devices. In one embodiment, each input lead of a detonator passes through a ferrite choke core in contact with the metallic casing that houses the detonator. A printed circuit tape between the input leads and the casing provides electrostatic protection, and heat generated by the ferrite choke core is removed by radiation from the metal casing.
    Type: Grant
    Filed: December 19, 1979
    Date of Patent: April 5, 1983
    Inventors: Paul W. Proctor, Robert L. Dow