Patents by Inventor David M. HYMAS

David M. HYMAS 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).

  • Publication number: 20230323624
    Abstract: An excavating system for use in ground-engaging applications. The excavating system may include a wear member having a top leg, a bottom leg, and a bearing face connecting the legs. The excavating system may also include a lip, which may include a top inset surface. The top inset surface may have an upper bearing surface shaped to bear against an inner surface of the top leg of the shroud. The top inset surface may also have a forward bearing surface extending between the upper bearing surface and a lower surface formed on the downwardly facing surface. The forward bearing surface may face upwardly and forwardly at a non-vertical angle.
    Type: Application
    Filed: April 11, 2023
    Publication date: October 12, 2023
    Inventors: Karthik Halike Gururaj, David M. Hymas
  • Publication number: 20230323639
    Abstract: A fastening assembly may comprise a collar and a pin. The collar may have an aperture, a collar lock, which projects from an outer surface, and a pin lock, which is disposed on a portion of the aperture. The collar lock may be compressible and configured to elastically deform while introducing the collar to a wear member. The pin may have a pin lock engagement hole shaped to engage with the pin lock as it is inserted through the aperture of the collar. The fastening system may be used in a wear member assembly. The wear member may have a side opening in communication with a cavity formed on one end of the wear member. The side opening may have a collar lock engagement hole. The collar may be inserted into the side opening so that the collar lock engages the collar lock engagement hole. Methods and assemblies thereof.
    Type: Application
    Filed: March 24, 2023
    Publication date: October 12, 2023
    Inventors: David M. Hymas, Sean M. Pitts
  • Patent number: 11491705
    Abstract: In a metal fiber composite (MFC) additive manufacturing (AM) method, a layer of polymer structures is deposited using a fused filament fabrication (FFF) printer assembly comprising at least one nozzle. Subsequently, an MFC printer assembly is used to embed a continuous metal fiber into one or more of the polymer structures of the layer. The embedding is achieved by heating the metal fiber and applying pressure to the metal fiber using an embedding surface of the MFC printer assembly. The heated metal fiber melts polymer adjacent thereto, thereby allowing the pressure to embed the metal fiber into the polymer structure. Using the MFC-AM method, various composite structures can be formed, such as novel heat exchangers that may otherwise be difficult or impossible to fabricate via other manufacturing techniques.
    Type: Grant
    Filed: October 6, 2017
    Date of Patent: November 8, 2022
    Assignee: UNIVERSITY OF MARYLAND, COLLEGE PARK
    Inventors: David M. Hymas, Serguei V. Dessiatoun, Michael M. Ohadi
  • Publication number: 20200016823
    Abstract: In a metal fiber composite (MFC) additive manufacturing (AM) method, a layer of polymer structures is deposited using a fused filament fabrication (FFF) printer assembly comprising at least one nozzle. Subsequently, an MFC printer assembly is used to embed a continuous metal fiber into one or more of the polymer structures of the layer. The embedding is achieved by heating the metal fiber and applying pressure to the metal fiber using an embedding surface of the MFC printer assembly. The heated metal fiber melts polymer adjacent thereto, thereby allowing the pressure to embed the metal fiber into the polymer structure. Using the MFC-AM method, various composite structures can be formed, such as novel heat exchangers that may otherwise be difficult or impossible to fabricate via other manufacturing techniques.
    Type: Application
    Filed: October 6, 2017
    Publication date: January 16, 2020
    Inventors: David M. HYMAS, Serguei V. DESSIATOUN, Michael M. OHADI