Patents by Inventor Thomas L. Yohe

Thomas L. Yohe 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: 4631961
    Abstract: A probe rod is inserted into a water main through a corporation cock. The rod has a plurality of transverse passages parallel to one another and aligned in the direction of flow. Within these transverse passages, in flush relationship to the passage walls, are inserted removable sampling rings. All but one of the rings are of the same material as the inner wall of the main. The remaining ring, used as a control, is a synthetic resin ring. The flush relationship prevents the formation of turbulent eddies at the ends of the rings. Consequently, microbial growth conditions on the rings themselves reliably simulate conditions on the interior wall of the main.Within a tubular extension on the exterior of the corporation cock an O-ring seal is provided. The length of the extension, and the position of the seal, are such that the probe rod can be partially withdrawn beyond the corporation valve without causing any of the transverse passages to pass through the O-ring.
    Type: Grant
    Filed: December 31, 1985
    Date of Patent: December 30, 1986
    Assignee: Philadelphia Suburban Water Company
    Inventors: Thomas L. Yohe, Rodney M. Donlan, Karl M. Kyriss
  • Patent number: 4608163
    Abstract: A domestic well water system, rendered unusable by volatile contaminants in the groundwater, can be restored to use by installing an aerator in a flow path such that water is continuously pumped, by the existing well pump, out of the well, through the aerator, and back to the well through the well head. Water is diverted from this flow path for use. The well serves as a storage device, and water returned from the aerator to the well mixes with water in the well and serves as a buffer to encroachment by contaminated groundwater.
    Type: Grant
    Filed: April 3, 1985
    Date of Patent: August 26, 1986
    Inventors: Thomas L. Yohe, Karl M. Kyriss
  • Patent number: 4526692
    Abstract: A domestic well water system, rendered unusable by volatile contaminants in the groundwater, can be restored to use by installing an aerator in a flow path such that water is continuously pumped, by the existing well pump, out of the well, through the aerator, and back to the well through the well head. Water is diverted from this flow path for use. The well serves as a storage device, and water returned from the aerator to the well mixes with water in the well and serves as a buffer to encroachment by contaminated groundwater.
    Type: Grant
    Filed: January 13, 1984
    Date of Patent: July 2, 1985
    Inventors: Thomas L. Yohe, Karl M. Kyriss