Patents by Inventor Mark L. Dzierzbicki

Mark L. Dzierzbicki 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).

  • Patent number: 6138368
    Abstract: The present invention is directed to a sprinkler head leveling for ensuring that the longitudinal axis of a sprinkler head assembly is substantially vertically aligned. The sprinkler head leveler uses a hollow cylindrical base which slides over the sprinkler head bonnet and external casing after the sprinkler head is inserted in the ground. A bull's-eye level is mounted to the base and disposed above a top surface of the base to provide clearance from the attachment hardware and embossments on the top of the sprinkler head assembly. In this way, the leveling device can be used to vertically align the sprinkler head assembly without interference from the surface of the bonnet and the surrounding ground.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: October 31, 2000
    Inventor: Mark L. Dzierzbicki
  • Patent number: 6070505
    Abstract: The present invention is directed to a P-handle extraction tool for removing and/or installing a tubular member when access to the external surface of the tubular member is restricted. The tool uses a P-shaped handle to orient the grip of the tool approximately perpendicular to the longitudinal axis of the tubular member to be removed or installed that is engaged by the tool. Thus oriented, the tubular member is rotated by rotating the grip about the axis of rotation of the tubular member. The handle design also provides for the attachment of a torque arm, thereby allowing the user to generate additional torque necessary to remove tightly fitted tubular members.
    Type: Grant
    Filed: January 21, 1998
    Date of Patent: June 6, 2000
    Inventor: Mark L. Dzierzbicki