Patents Assigned to University of Bath (British Corp.)
  • Patent number: 4832880
    Abstract: In a process for the manufacture of a moulded product by compression of a powder or granules in a die, a powdered die lubricant is used, lubricant particles are electrically charged and the charged particles are fed to the die in advance of the moulding powder. An apparatus for carrying out the process is also provided, the apparatus including a first feed for feeding a powdered lubricant to the die, a second feed for feeding moulded powder to the die after the powdered lubricant, and means for maintaining the electrical potential of the die at a predetermined value different from that of the powdered lubricant.
    Type: Grant
    Filed: December 10, 1986
    Date of Patent: May 23, 1989
    Assignee: University of Bath (British Corp.)
    Inventor: John N. Staniforth