×

Extruder control system

  • US 3,357,049 A
  • Filed: 12/20/1965
  • Issued: 12/12/1967
  • Est. Priority Date: 12/18/1964
  • Status: Expired due to Term
First Claim
Patent Images

1. A SYSTEM FOR CONTROLLING THE FLOW OF MOLTEN PLASTIC THROUGH THE DIE OPENING OF AN EXTRUDER, (1) THE EXTRUDER COMPRISING (A) AN ELONGATED CYLINDRICAL HOUSING HAVING A FEED HOPPER AT ONE END AND AN EXTRUSION DIE WITH AN OPENING AT THE OTHER END, AND (B) AN AXIALLY RECIPROCABLE, ROTATABLE SCREW MOUNTED IN THE HOUSING, A TORPEDO CARRIED BY ONE END OF THE SCREW, A FIXED RING ARRANGED NEAR THE OTHER END OF THE HOUSING, THE RING AND THE TORPEDO DEFINING A CONSTRICTED ANNULAR PASSAGE OF A DIAMETER VARYING WITH THE AXIAL POSITION

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×