Patents by Inventor Mark D. Bender

Mark D. Bender 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).

  • Rotating punch with a relief feature for forming IPM motor rotor
    Patent number: 11223262
    Abstract: Disclosed herein is a method for forming a rotor or stator core. The method includes the steps of: providing a plurality of key punches disposed about an inner diameter area of a sheet of electrical steel and circumferentially spaced from one another and activating a first key punch of the plurality of key punches to cut the electrical steel sheet to remove a portion to form a first key disposed at a first key rotational angle from the line of orientation from a plurality of key rotational angles.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: January 11, 2022
    Assignee: Tempel Steel Company
    Inventor: Mark D. Bender