Patents by Inventor Brian J. Ralph

Brian J. Ralph 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).

  • Vertical injection molding machine
    Patent number: 6722875
    Abstract: An injection molding machine with a vertically operating clamp mechanism is provided with a pair of locking devices on the upper movable platen to lock the locking rods for high tonnage clamping forces. Each locking device uses spring biased actuating rods to simultaneously lock two locking rods to the movable platen in an always “on” arrangement. A power on actuator is provided to release the locking device for raising and lowering the movable platen. A vertical ladder frame is provided for guiding the movable platen when it is raised or lowered. Additionally, a lift mechanism is provided for a rotary table carrying the lower mold halves.
    Type: Grant
    Filed: April 17, 2002
    Date of Patent: April 20, 2004
    Assignee: Van Dorn Demag Corporation
    Inventors: Brian J. Ralph, Paul Zakich
  • Vertical injection molding machine
    Publication number: 20030198709
    Abstract: An injection molding machine with a vertically operating clamp mechanism is provided with a pair of locking devices on the upper movable platen to lock the locking rods for high tonnage clamping forces. Each locking device uses spring biased actuating rods to simultaneously lock two locking rods to the movable platen in an always “on” arrangement. A power on actuator is provided to release the locking device for raising and lowering the movable platen. A vertical ladder frame is provided for guiding the movable platen when it is raised or lowered. Additionally, a lift mechanism is provided for a rotary table carrying the lower mold halves.
    Type: Application
    Filed: April 17, 2002
    Publication date: October 23, 2003
    Inventors: Brian J. Ralph, Paul Zakich