Patents by Inventor Donald E. Costley

Donald E. Costley 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: 5305673
    Abstract: A dual blade band saw cutting machine which allows two individuals to work on two different objects at two separate work stations within the same machine. Through the utilization of a single variable speed motor and two overlapping triangular rotational patterns, two safe and independent work stations with large working areas, each having its own cutting band, are provided. Additional features of the cutting machine include assemblies for adjusting the tension of the cutting bands, an assembly for varying the speed of the motor, and a display for informing the individuals operating the cutting machine of the rotational speed of the cutting bands in blade feet per minute.
    Type: Grant
    Filed: June 25, 1993
    Date of Patent: April 26, 1994
    Inventor: Donald E. Costley