Patents by Inventor Frank Schiphorst

Frank Schiphorst 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).

  • SELF-LOCKING JACK
    Publication number: 20220185640
    Abstract: A jack includes a main body (14) with a cavity (18). A lifting cylinder (42) is supported on the main body and is extendable into the cavity. A lock (30, 34) is movably coupled to the main body. A spring (38) is coupled to the lock and biases the lock into the cavity. A cylinder (86) is coupled to the lock and biases the lock out of the cavity against the biasing force of the spring.
    Type: Application
    Filed: March 27, 2020
    Publication date: June 16, 2022
    Inventors: Frank Schiphorst, Bas Geerdink, Jeremy Stubbs