Patents by Inventor William Kohnen

William Kohnen 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).

  • Swimming apparatus
    Patent number: 10745093
    Abstract: Disclosed are systems, devices, and methods for swimming using a swimming apparatus that includes an exterior shell, optionally including a top half and bottom half and an opening to accommodate a propulsion system.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: August 18, 2020
    Inventors: William Kohnen, Henrick R. Kohnen
  • SWIMMING APPARATUS
    Publication number: 20190039703
    Abstract: Disclosed are systems, devices, and methods for swimming using a swimming apparatus that includes an exterior shell, optionally including a top half and bottom half and an opening to accommodate a propulsion system.
    Type: Application
    Filed: August 1, 2018
    Publication date: February 7, 2019
    Inventors: William Kohnen, Henrick R. Kohnen
  • Sealable dome assembly
    Patent number: 8656853
    Abstract: A dome assembly comprises an upper hemispherical window having a first end surface with an upper ring assembly sealingly connected to the upper hemispherical window at or near the first end surface and a lower hemispherical window having a second end surface with a lower ring assembly sealingly connected to the lower hemispherical window at or near the second end surface. The dome assembly further comprises a spider retainer assembly comprising a spider ring assembly and one or more saddle arms having a first end and a second end with each saddle arm fixedly attached to the spider ring assembly at a first end and fixedly attached to one or more of the upper ring assembly and the lower ring assembly at a second end.
    Type: Grant
    Filed: September 27, 2011
    Date of Patent: February 25, 2014
    Assignee: SEAmagine Hydrospace Corporation
    Inventors: William Kohnen, Ian Sheard
  • SEALABLE DOME ASSEMBLY
    Publication number: 20120073490
    Abstract: A dome assembly comprises an upper hemispherical window having a first end surface with an upper ring assembly sealingly connected to the upper hemispherical window at or near the first end surface and a lower hemispherical window having a second end surface with a lower ring assembly sealingly connected to the lower hemispherical window at or near the second end surface. The dome assembly further comprises a spider retainer assembly comprising a spider ring assembly and one or more saddle arms having a first end and a second end with each saddle arm fixedly attached to the spider ring assembly at a first end and fixedly attached to one or more of the upper ring assembly and the lower ring assembly at a second end.
    Type: Application
    Filed: September 27, 2011
    Publication date: March 29, 2012
    Applicant: SEAmagine Hydrospace Corporation
    Inventors: William Kohnen, Ian Sheard
  • Underwater craft having sealed and inflatable buoyancy chambers
    Patent number: 6321676
    Abstract: An underwater craft having a buoyancy control system, multi-sealed passenger chamber and emergency shut-off for external operation using inherent buoyancy of the craft.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: November 27, 2001
    Assignee: Seamagine Hydrospace Corporation
    Inventors: William Kohnen, Ian Sheard
  • Hybrid boat and underwater watercraft
    Patent number: 5704309
    Abstract: A hybrid boat and underwater craft and method for operating an underwater craft having positive buoyancy, a three-point stabilization system and vertical thruster and a system for enhanced buoyancy at the surface.
    Type: Grant
    Filed: December 6, 1995
    Date of Patent: January 6, 1998
    Assignee: SEAmagine Hydrospace Corporation
    Inventor: William Kohnen