Patents by Inventor Johan C. Van der Zwaan

Johan C. Van der Zwaan 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: 4187759
    Abstract: A separation nut system having bolt ejecting separation nut assemblies coned with bolt catcher assemblies. At least two separation nut assemblies with their respective bolt catcher assemblies are connected by a manifold tube so that, should the squib initiator of one separation nut assembly fail, the manifold tube will transfer and redistribute the gas generated from one squib to both separation nut assemblies to provide performance redundancy. Also, each separation nut assembly is capable of being tested for performance integrity prior to actual usage without the need for disassembly and subsequent reassembly and inspection after each use.
    Type: Grant
    Filed: September 16, 1977
    Date of Patent: February 12, 1980
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Henry Toy, Phillip Bernstein, Johan C. Van der Zwaan
  • Patent number: 4015507
    Abstract: A system to impart a desired combination of linear and rotational momentum o a projectile. A pair of thrusters are designed to engage a projectile at a fixed angle to impart the desired combination of forces when activated. A manifold tube commutes between the thrusters and a slow release cartridge. Upon ignition of the cartridge, gases enter the manifold tube to cause simultaneous thruster action, avoiding tipoff and other problems associated with the introduction of undesired force components.
    Type: Grant
    Filed: March 25, 1976
    Date of Patent: April 5, 1977
    Assignee: The United States of America as represented by the Secretary of the Navy
    Inventors: Henry Toy, Phillip Bernstein, Johan C. Van der Zwaan