Patents by Inventor Robert Meneghini

Robert Meneghini 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).

  • Delayed compression sleeve hammer
    Publication number: 20070267205
    Abstract: A sleeve carried by and preferably slidable relative to the piston, for controlling air passages associated with a central air feed tube, whereby retraction pressure is applied to the piston substantially at impact. It is the impact itself of the piston against the bit, which enhances sliding of the sleeve relative to the piston, over the feed tube, and thereby switches the airflow at the moment of impact.
    Type: Application
    Filed: May 19, 2006
    Publication date: November 22, 2007
    Inventor: Robert Meneghini