Patents by Inventor Eric B. Holtsmark

Eric B. Holtsmark 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: 5143408
    Abstract: Shown and described is a variable size pipe connector which may be cut into one or more segments and is used to connect together pipes having different inside diameters. A pair of hose clamps is used to secure the connector in place and assure a fluid tight seal. The connector may have external indicia indicating cut lines directly dimensionally related to the diameters of pipes to be connected together. PVC and similar thick walled pipe ends may be grooved to further assure integrity of the seal between connector and pipes when clamped thereabout by hose clamps and metal pipe ends may be flared for the same purpose.
    Type: Grant
    Filed: November 22, 1991
    Date of Patent: September 1, 1992
    Inventor: Eric B. Holtsmark