Patents by Inventor Thomas Ptak

Thomas Ptak 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).

  • Underground measurement and fluid sampling apparatus
    Patent number: 5725055
    Abstract: A fluid sampling apparatus for use in a hole in the earth having a rigid wall and containing a fluid comprising a flexible tubular member extendable within the hole and inflatable to a diameter effective to urge the tubular member against the rigid wall. At least one fluid pump is in communication with the tubular member and the hole for transferring fluid between the tubular member and the hole whereby the tubular member is inflated as the fluid si transferred from the hole into the tubular member and the tubular member is deflated as the fluid is transferred from the tubular member to the hole. The flexible tubular member may be adapted to contain at least one instrument for sampling and measuring fluids.
    Type: Grant
    Filed: March 7, 1996
    Date of Patent: March 10, 1998
    Inventors: Mario Schirmer, Georg Teutsch, Thomas Ptak