Patents by Inventor Steven Lawver

Steven Lawver 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).

  • Fluidized powder valve system
    Patent number: 11027959
    Abstract: A device is provided for the controlled and precise delivery of powders, including cohesive powders, based on a fluidization technique to directly reduce inter-particle friction and using a fluidizing gas as an air-bearing. The device preferably includes no moving parts, no sealing gaskets or sealing surfaces. Unlike mechanically actuated valves, the powders dispensed by the current device do not experience mechanical shearing, thereby reducing wear and thus increasing the service life of the apparatus.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: June 8, 2021
    Assignee: MATSYS INC.
    Inventors: Roderick Rowland, Steven Lawver, Tony F. Zahrah
  • Method for making a composite fragmentation cap that is integrally formed onto a projectile body
    Patent number: 10712137
    Abstract: Process for making a fragmentation warhead using hot isostatic pressing where tungsten spheres, powdered steel, and interlock features on a mandrel are consolidated in a matrix. Then in the finished part, the front fragmentation cap, rear and interior geometries are machined, resulting in a finished warhead with an enhanced performance fragmentation cap integrally bonded to it.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: July 14, 2020
    Assignee: The United States of America as Represented by the Secretary of the Army
    Inventors: Joshua McGowan, Michael E. Ellis, Tony Zahrah, Deepak Kapoor, Steven Lawver, Sergio Torrejon, Roderick Rowland, John Brough, James Grzybek
  • Fluidized Powder Valve System
    Publication number: 20200002148
    Abstract: A device is provided for the controlled and precise delivery of powders, including cohesive powders, based on a fluidization technique to directly reduce inter-particle friction and using a fluidizing gas as an air-bearing. The device preferably includes no moving parts, no sealing gaskets or sealing surfaces. Unlike mechanically actuated valves, the powders dispensed by the current device do not experience mechanical shearing, thereby reducing wear and thus increasing the service life of the apparatus.
    Type: Application
    Filed: June 29, 2018
    Publication date: January 2, 2020
    Applicant: MATSYS INC.
    Inventors: Roderick Rowland, Steven Lawver, Tony F. Zahrah