Lubricated bridge
AssigneeReymond Products International, Inc.
InventorsDonald A. Roberts, James J. Zwick
Life of this patent
Estimating the term…
Abstract
An apparatus and method provide for the extrusion of green brick material around a hole-generating member and the use of a lubrication fluid between the hole-generating member and the green brick material to reduce friction therebetween during extrusion, thus enabling the formation of larger sized holes in the bricks formed thereby.
Claims20
An apparatus for use in generating a hole in extruded green brick material during extrusion thereof, the apparatus comprising:
- a hole-generating assembly for generating the hole in the extruded green brick material;
- a downstream end on the assembly;
- a first lubricant through passage formed in the assembly adapted for moving a lubricant therethrough;
- and
- an exit opening of the lubricant passage on the assembly upstream of its downstream end.
An apparatus for use in generating a hole in extruded green brick material during extrusion thereof, the apparatus comprising:
- a bridge ring;
- an extrusion passage formed through the bridge ring;
- a bridge mounted on the bridge ring and extending across the passage;
- a hole-generating assembly mounted on the bridge and extending downstream therefrom for generating the hole in the extruded green brick material;
- and
- a lubricant conduit extending from the bridge ring to the bridge.
A method comprising the steps of:
- extruding green brick material through an extrusion passage;
- forcing the green brick material around a hole-generating member disposed in the passage;
- and
- moving a lubrication fluid between the hole-generating member and the green brick material to reduce friction therebetween.
Dependencies are inferred from the claim text.