Patents by Inventor Willard Oswald Kaarlela

Willard Oswald Kaarlela 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).

  • Cartridge retaining means for earthworking tips
    Patent number: 4096653
    Abstract: An earthworking device comprises a support member having a work tool, such as an earthworking tip, detachably mounted on a forward end thereof. A pin is disposed in aligned bores formed through the support member and the work tool and an annular replaceable cartridge circumvents the pin to retain it in position. The cartridge comprises a housing having an annular elastomeric member secured therein and circumventing the pin in frictional engagement therewith.
    Type: Grant
    Filed: October 31, 1974
    Date of Patent: June 27, 1978
    Assignee: Caterpillar Tractor Co.
    Inventors: Willard Oswald Kaarlela, Eugene L. Helton