Patents by Inventor Ben T. Lowell

Ben T. Lowell 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).

  • Flashing article comprising a chlorinated polyethylene layer adhered to an asphalt-saturated felt layer produced by joining the two layers under pressure at elevated temperature
    Patent number: 4122230
    Abstract: Roof drain flashing constituting a tough flexible material bondable to any type roof membrane and capable of accommodating thermal expansion and contraction of the roof without cracking and leaking at the drain, being a layer of nonplasticized chlorinated polyethylene integrally and irreversibly joined to a layer of asphalt-saturated roofing felt. The non-plasticized chlorinated polyethylene is physically joined to the asphalt-saturated felt by pressing the two together at pressures in the 4000 PSI range just subsequent to the CPE being extruded and cooled to the 250.degree. F range, having passed through the extrusion die at considerably higher temperatures.
    Type: Grant
    Filed: April 22, 1977
    Date of Patent: October 24, 1978
    Inventor: Ben T. Lowell