US 6,981,541 B2
Casting Furnace
David O. Warren, Cloverdale, Calif. (US)
Assigned to Lectrotherm, Inc., Canton, Ohio (US)
Filed on Oct. 22, 2004, as Appl. No. 10/971,632.
Application 10/971632 is a division of application No. 10/251027, filed on Sep. 20, 2002, granted, now 6,827,125.
Prior Publication US 2005/0109481 A1, May 26, 2005
This patent is subject to a terminal disclaimer.
Int. Cl. B22B 27/04 (2006.01); B22D 27/15 (2006.01)
U.S. Cl. 164—258 19 Claims
OG exemplary drawing
 
1. A casting furnace for melting and pouring molten material into a mold, the furnace comprising:
a melt processing chamber;
a mold loading chamber;
a mold support adapted to support the mold; and
an elevator mechanism disposed in the mold loading chamber including a rotatable ball screw and a ball follower engaging the ball screw whereby rotation of the ball screw moves the ball follower to raise and lower the mold support.