Patents by Inventor Charles L. Day

Charles L. Day 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).

  • Multi-actuator hydraulic press
    Patent number: 4953458
    Abstract: A hydraulic press; having two platens, a multiplicity of hydraulic cylinders, capable of actuation in series, parallel, or passively to generate a plurality of velocities and pressures, on demand, either up acting or down acting, and with all opposing velocities and forces equal, yet requiring less energy for operation than the prior art.
    Type: Grant
    Filed: March 13, 1989
    Date of Patent: September 4, 1990
    Inventor: Charles L. Day
  • Molding
    Patent number: 4659304
    Abstract: A mold assembly for supporting a mold in a molding press, heating elements for controlling the temperature of the mold and an insulating arrangement, disposed between the heating elements and structure of the molding press, having an insulating cavity defined by mold support structure and having thermally reflective means disposed in said cavity remote from the heating elements to reflect heat back through the cavity. The cavity may have an insulating material therein.
    Type: Grant
    Filed: February 11, 1986
    Date of Patent: April 21, 1987
    Assignee: Palmer-Chenard Industries, Inc.
    Inventor: Charles L. Day