Patents by Inventor Johann Mostert

Johann Mostert 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: 11255644
    Abstract: This invention related to a method of and system for detecting a threat, particularly a threat to a vehicle associated with an explosive blast and/or detonations. The method typically comprises receiving electromagnetic signals, or data indicative thereof, via a suitable electromagnetic detector arrangement from a target area adjacent the vehicle, as well as receiving optical signals, or data indicative thereof, via a suitable optical sensor arrangement also from a target area adjacent the vehicle. The method then comprises generating a threat detect output in response to receiving an optical signal indicative of a threat subsequent to receiving an electromagnetic signal indicative of a threat. The system typically implements the method as described. The invention also extends to a vehicle comprising a system in accordance with the invention.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: February 22, 2022
    Inventors: Marius Olivier, Frederik Johannes Mostert
  • Publication number: 20190301840
    Abstract: This invention related to a method of and system for detecting a threat, particularly a threat to a vehicle associated with an explosive blast and/or detonations. The method typically comprises receiving electromagnetic signals, or data indicative thereof, via a suitable electromagnetic detector arrangement from a target area adjacent the vehicle, as well as receiving optical signals, or data indicative thereof, via a suitable optical sensor arrangement also from a target area adjacent the vehicle. The method then comprises generating a threat detect output in response to receiving an optical signal indicative of a threat subsequent to receiving an electromagnetic signal indicative of a threat. The system typically implements the method as described. The invention also extends to a vehicle comprising a system in accordance with the invention.
    Type: Application
    Filed: April 28, 2017
    Publication date: October 3, 2019
    Inventors: Marius Olivier, Frederik Johannes Mostert
  • Patent number: 8871040
    Abstract: The invention relates to an air hardenable high-hardness steel for armoring applications, such as armor plate for use in light armored vehicles and body armor, and having a high level of ballistic performance relative to its plate thickness. In particular, the invention concerns a high ballistic strength martensitic armor steel which, in an air cooled and untempered condition, has a strength coefficient (s0) of higher than 2500 MPa; a flow parameter (P) of higher than 8.0, preferably higher than 18.0; and a manganese content of 1.8 to 3.6% by weight of manganese, preferably 2.8 to 3.1% by weight of manganese. The armor steel also includes retained austenite at a volume fraction of at least 1%, and preferably a volume fraction of 4 to 20%.
    Type: Grant
    Filed: June 15, 2010
    Date of Patent: October 28, 2014
    Assignee: Damascus Armour Development (Pty) Ltd.
    Inventors: Deon Francoise Du Plessis, Jacob Johannes Wessels, Percy Phillip Adams, Roelof Johannes Mostert, Waldo Edmund Stumpf
  • Publication number: 20120144989
    Abstract: The invention relates to an air hardenable high-hardness steel for armouring applications, such as armour plate for use in light armoured vehicles and body armour, and having a high level of ballistic performance relative to its plate thickness. In particular, the invention concerns a high ballistic strength martensitic armour steel which, in an air cooled and untempered condition, has a strength coefficient (s0) of higher than 2500 MPa; a flow parameter (P) of higher than 8.0, preferably higher than 18.0; and a manganese content of 1.8 to 3.6% by weight of manganese, preferably 2.8 to 3.1% by weight of manganese. The armour steel also includes retained austenite at a volume fraction of at least 1%, and preferably a volume fraction of 4 to 20%.
    Type: Application
    Filed: June 15, 2010
    Publication date: June 14, 2012
    Inventors: Deon Francoise Du Plessis, Jacob Johannes Wessels, Percy Phillip Adams, Roelof Johannes Mostert, Waldo Edmund Stumpf
  • Patent number: 5603245
    Abstract: A structural component (21) is moved axially back and forth with the aid of a closed cam (40A) arranged on a rotating cam carrier (33) for mechanically entraining cam follower rollers carried by the structural component. At least one roller (26) of a pair of rollers contacts one cam surface of said closed cam with a controlled contact force. For this purpose the contact force between the cam follower rollers and the respective cam surface is varied during one cam revolution in such a way that in an angular range (41) of the reversing point (O.T., U.T.) the contact force of at least one cam follower roller that transmits the motion in the respective direction, is increased to such an extent that this force corresponds at least to the inertia force resulting from the brake application or acceleration of the component to be moved. Outside of the angular range (41) the cam follower rollers (26, 27) are kept in contact with the cam surfaces with a minimal force.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: February 18, 1997
    Assignee: Schumag Aktiengesellschaft
    Inventors: Bruno Walczak, Johann Mostert
  • Patent number: 4489582
    Abstract: The invention relates to a method and an apparatus for the straightening of drawn round stock. In conventional straightening methods, the round stock to be straightened is transported through the straightener with the entrance and exit in alignment, being thus straightened. With this procedure, large pieces at the beginning and end of the round stock to be straightened are straightened in an unsatisfactory manner and must therefore often be cut off before further fabrication of the round stock. To remedy this disadvantage it is proposed that for instance the deviation from the straight entry line forcibly obtained in the straightener arc by deflection, is maintained as the exit direction from the arc. To this end each round stock receiving device is oriented or can be oriented behind an exit die at least by its receiving elements in such a way that the round stock leaving the exit die enters such receiving elements or the next die series without appreciable changes of direction.
    Type: Grant
    Filed: March 9, 1983
    Date of Patent: December 25, 1984
    Assignee: Firma Schumag GmbH
    Inventor: Johann Mostert
  • Patent number: 4358477
    Abstract: The invention relates to a radiation curable liquid coating composition based on (A) an epoxy compound containing an acryloyl and/or methacryloyl group, (B) a cross-linking agent for the epoxy groups of component (A) and a photoinitiator. The invention also relates to a process for coating a substrate with such a composition, and to the substrate thus manufactured.
    Type: Grant
    Filed: September 5, 1979
    Date of Patent: November 9, 1982
    Assignee: Akzo N.V.
    Inventors: Arie Noomen, Johannes Mostert, Egbert Wolters
  • Patent number: 4112730
    Abstract: In a carriage drawing machine for uniformly drawing elongated material to drawn, having two drawing carriages reciprocatingly displaceable in mutually opposite directions, a drawing jaw vise on each carriage for alternately gripping the material to be drawn, each of the vises having two drawing jaws held in a housing by a wedge structure with bearing rollers interposed which serves to self-lock during the drawing, both of said drawing jaw vises being disposed to receive and simultaneously draw two bars of the material to be drawn, at least one of the two drawing jaws being engageable in common with both of the bars, and including an equalizing support in association with the other of the two drawing jaws.
    Type: Grant
    Filed: August 29, 1977
    Date of Patent: September 12, 1978
    Assignee: Schumag Schumacher Metallwerke Gesellschaft mit beschrankter Haftung
    Inventors: Johann Greven, Johann Mostert