Patents by Inventor Michael M. Zapico

Michael M. Zapico 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).

  • Sediment sampler
    Patent number: 4729437
    Abstract: The sampler disclosed comprises a barrel assembly (21) that is hammered into the ground, from the surface. Hammer-drive-rods are disconnectable from the barrel by manipulation from the surface by means of a left-hand-screw-thread connection (31). The barrel is pulled out of the hole by means of a draw-cable (20). The barrel includes an inner sleeve (16), made of thin aluminum or plastic. This sleeve is cut open to reveal the sample. The sleeve itself is relieved of the hammer blows and other stresses, which are taken entirely by the barrel.
    Type: Grant
    Filed: April 21, 1986
    Date of Patent: March 8, 1988
    Inventor: Michael M. Zapico