Patents by Inventor Alfred L. Cohen

Alfred L. Cohen 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).

  • Belt type oil removal unit
    Patent number: 4089784
    Abstract: A system is provided for removing accumulated oil from a basin. An endless belt for carrying oil is partially submerged in the basin and is driven and supported by a rotary drum. The rotary drum has an irregular surface for frictional cooperation with the belt and a spring-biased roller urges the belt against the irregular surface. The oil is scraped from the belt and directed away from the belt and basin. Means are also provided for wiping the underside of the drum surface.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: May 16, 1978
    Assignee: Tenco Hydro/Aerosciences, Inc.
    Inventors: Gregory A. Ettelt, Alfred L. Cohen