Patents by Inventor Mark Dorman

Mark Dorman 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: 8794152
    Abstract: A gas-impermeable sealer element (24, 124) for a detonator or other explosive initiation device includes a non-reactive sleeve (26, 126) having a channel (28, 128) formed therein. A reactive material strip (30, 130) is sealed within the channel for transmission of an explosive's initiation signal through the sealer element (24, 124), either alone or in cooperation with transfer charges located at the input and/or output end of the non-reactive sleeve (26, 126). The reactive material strip (30, 130) comprises a reactive metal wire or other substrate (34) having on one or both sides thereof a layer of reactive material (30, 130, 36), either reactive metal foils which react exothermically when ignited, or a deposited fuel-oxidizer reactive material. The reactive materials, upon being energized, react exothermically in the absence of atmospheric oxygen or other extraneous oxidizer and so may be encapsulated, sealed or otherwise isolated from the atmosphere in use.
    Type: Grant
    Filed: March 9, 2011
    Date of Patent: August 5, 2014
    Assignee: Dyno Nobel Inc.
    Inventors: Tyson J. Plitt, Joseph W. Twarog, Jr., Mark Dorman, Raymond T. Overstrom, John Childs
  • Publication number: 20130112098
    Abstract: A gas-impermeable sealer element (24, 124) for a detonator or other explosive initiation device includes a non-reactive sleeve (26, 126) having a channel (28, 128) formed therein. A reactive material strip (30, 130) is sealed within the channel for transmission of an explosive's initiation signal through the sealer element (24, 124), either alone or in cooperation with transfer charges located at the input and/or output end of the non-reactive sleeve (26, 126). The reactive material strip (30, 130) comprises a reactive metal wire or other substrate (34) having on one or both sides thereof a layer of reactive material (30, 130, 36), either reactive metal foils which react exothermically when ignited, or a deposited fuel-oxidizer reactive material. The reactive materials, upon being energized, react exothermically in the absence of atmospheric oxygen or other extraneous oxidizer and so may be encapsulated, sealed or otherwise isolated from the atmosphere in use.
    Type: Application
    Filed: March 9, 2011
    Publication date: May 9, 2013
    Applicant: DYNO NOBEL INC.
    Inventors: Tyson J. Plitt, Joseph W. Twarog, JR., Mark Dorman, Raymond T. Overstrom, John Childs
  • Patent number: 6347412
    Abstract: An apparatus is provided for diverting sound from a direction generally rearward of a user towards the user's ears. The apparatus includes a sound reflector which can be worn by the user directly or connected to a separate mount such as a helmet. A connection between the sound reflector and the helmet may be fixed or adjustable. An adjustable connection may be removable or permanent. When a helmet mount is used, the apparatus can include a splitter positioned between two sound reflectors. The splitter directs sound to each of the two sound reflectors. The addition of buffer pads aid the sound reflectors in deflecting air around the user's ears to reduce wind noise and increase the user's ability to hear sounds originating from the rearward direction.
    Type: Grant
    Filed: October 23, 2000
    Date of Patent: February 19, 2002
    Inventor: Mark Dorman
  • Patent number: D308698
    Type: Grant
    Filed: July 27, 1987
    Date of Patent: June 19, 1990
    Assignee: PCA Industries Inc.
    Inventor: Mark Dorman