Patents by Inventor Jeffrey L. Knierimen

Jeffrey L. Knierimen 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).

  • Shearable no go insert for a well lock
    Patent number: 4457368
    Abstract: An improved no go shoulder on a well lock which is adapted to lock in a locking notch in a landing nipple in a well in which the lock includes a setting wedge to be moved, after shearing setting shear means, for actuating locking dogs into the locking notch. The no go shoulder is of a shearable material having a shear strength load capacity greater than the shear strength capacity of the setting shear means but having a shear strength capacity less than the shear strength capacity of the landing nipple shoulder whereby the strength of the no go is sufficient to allow the lock to be set but is insufficient to deform the landing nipple shoulder. Preferably, the no go shoulder is a shearable insert positioned in a recess in the lock.
    Type: Grant
    Filed: March 25, 1983
    Date of Patent: July 3, 1984
    Assignee: Camco, Incorporated
    Inventors: Jeffrey L. Knierimen, Mark S. Fuller