Patents by Inventor Christopher E. Grewell

Christopher E. Grewell 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).

  • Publication number: 20220333358
    Abstract: A wear assembly for earth working equipment including a wear member including an exterior surface, an opening to receive a separable component, and a hole extending from the external surface to the opening. A lock in the hole to secure the separable component to the wear member, wherein the lock includes a collar and a pin that is adjustable within the collar so that the pin is movable inward to retain the separable component and movable outward to release the separable component. A magnet to secure the collar in the hole. The lock may pivot outwardly into the hole.
    Type: Application
    Filed: April 15, 2022
    Publication date: October 20, 2022
    Applicant: ESCO Group LLC
    Inventors: Clinton A. Wood, Cameron R. Leedham, Christopher D. Snyder, Christopher E. Grewell
  • Patent number: 11401686
    Abstract: A pin for pivotally connecting two components together is received in aligned openings of the two components. One end of the pin has a head of reduced dimension to be received in a correspondingly-shaped opening in one of the components. Axial movement of the pin in the openings is limited by a lock that engages the head of the pin.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: August 2, 2022
    Assignee: ESCO Group LLC
    Inventors: Christopher E. Grewell, Lee A. Zimmerman
  • Publication number: 20210246935
    Abstract: A pin assembly for a component, such as a trunnion bracket, includes a pin received in pin hole of the component, and a retainer received in a retainer opening of the component to releasably secure the pin in the pin hole. The retainer can be secured to the pin, such that the pin and lock assembly rotate as a single component.
    Type: Application
    Filed: February 5, 2021
    Publication date: August 12, 2021
    Applicant: ESCO Group LLC
    Inventors: Christopher E. Grewell, Shawn M. McCullum, Dustin L. Ashford, Lee A. Zimmerman, Craig D. Lechtenberg
  • Publication number: 20180080195
    Abstract: A pin for pivotally connecting two components together is received in aligned openings of the two components. One end of the pin has a head of reduced dimension to be received in a correspondingly-shaped opening in one of the components. Axial movement of the pin in the openings is limited by a lock that engages the head of the pin.
    Type: Application
    Filed: September 20, 2017
    Publication date: March 22, 2018
    Inventors: Christopher E. Grewell, Lee A. Zimmerman