Patents by Inventor Mark A. Schnatzmeyer

Mark A. Schnatzmeyer 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).

  • Riser connector
    Patent number: 4307902
    Abstract: The present invention discloses a riser connector assembly for connecting two riser members. The riser connector assembly includes connecting means which are remotely activated by a shifting tool. The connecting means includes a latch attached to one riser member and which engages the other riser member, a locking sleeve for holding the latch in engagement, an actuator sleeve for driving said locking sleeve to a position where it holds the latch in engagement, and locking means for locking the locking sleeve in that position. The shifting tool is attached to a tubing string or a line and lowered into the riser. The shifting tool has a first engagement means for engaging and moving the actuator sleeve and second engagement means for engaging and moving the locking sleeve. The shifting tool is used for remotely activating the connecting means in both connecting and disconnecting the riser members.
    Type: Grant
    Filed: July 13, 1979
    Date of Patent: December 29, 1981
    Assignee: Otis Engineering Corp.
    Inventor: Mark A. Schnatzmeyer