Patents by Inventor Frank D. Mumm

Frank D. Mumm 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: 4013145
    Abstract: A vehicle hill holder such as a wheel chock is disclosed comprising a pair of blocks which have opposable ends, one block having a pair of springs pivotally secured to opposite sides thereof that swing in a direction towards the second block. The free ends of the springs are removable insertable into a lever mounted on the second block, the fulcrum of the lever being in a plane above the base of the blocks and above the end of the first block where the springs are pivotally secured. The lever is depressed in an arc towards the base of the second block and thereby stretches the spring forcing the blocks towards one another to secure a wheel positioned between the blocks. The chocks are separated by raising the lever to release spring tension followed by removing the springs from the lever after which the blocks may be pulled apart from one another.
    Type: Grant
    Filed: January 7, 1976
    Date of Patent: March 22, 1977
    Assignee: Lawrence Peska Associates, Inc.
    Inventor: Frank D. Mumm