Dean A Boozan, 693911 Vt Route 109, Belvidere Center, VT 05492

6386270, May 14, 2002

Jun 18, 2001

09/883880

Nedeltcho P. Kandev - Quebec, CA
Jerome B. Allyn - Colchester VT
Dean A. Boozan - Waterville VT

Hazelett Strip-Casting Corporation - Colchester VT

B22D 1106

164471, 164481, 164431, 164507

Method, system and apparatus for controllably heating copper alloy dam blocks in revolving edge dam chains in twinbelt continuous casters by induction heating of thermally-sprayed ferromagnetic layers bonded in shallow depressions in such blocks. High thermal conductivity of such blocks advantageously quickly conducts inductive heat from ferromagnetic layers into the blocks. For casting a slab of electrolytic anodes having aligned opposed protruding lugs, such chains include uniformly spaced lug-molding pocket blocks. Periodic induction heating of ferromagnetic layers on dam blocks of one chain or the other keeps pocket blocks aligned as revolving chains travel downstream along opposite sides of moving mold casting regions. Directly induction heating copper alloy dam blocks is very impractical. Therefore, ferromagnetic layers are thermally sprayed into depressions in blocks prior to assembling such chains.

4487790, Dec 11, 1984

Nov 7, 1983

6/549653

Norman J. Bergeron - Burlington VT
Dean A. Boozan - Waterville VT
Thomas E. Brennan - South Hero VT

Hazelett Strip-Casting Corporation - Colchester VT

B05B 318
B05D 110

427422

Laterally "floating" thermal spray gun traversing apparatus and system for laterally tracking a revolving casting belt being thermal spray coated for applying uniformly spaced passes of thermal spraying on the revolving casting belt regardless of any lateral (edgewise) movements of the casting belt in either direction and regardless of any chamber in the edge of the belt. The thermal spray gun is traversed by a leadscrew and an adjustable speed drive for the leadscrew, both the leadscrew and its adjustable drive being carried by a frame mounted on a carriage freely movable along a trackway extending parallel to the axis of the leadscrew. A roller senses the lateral position of the edge of the revolving belt, and the carriage is moved by a source of motive power responsive to the sensed lateral position of the belt for causing the carriage together with the frame, leadscrew and leadscrew drive automatically to track the belt. This source of motive power is shown as a spring acting in a direction for urging the roller into contact with the edge of the revolving belt.

5437326, Aug 1, 1995

Jun 28, 1993

8/084352

Thomas S. Graham - Shelburne VT
Wojtek Szczypiorski - Colchester VT
Jerome B. Allyn - Colchester VT
Dean A. Boozan - Waterville VT
George Desorcie - Westford VT
Norman Bergeron - Burlington VT
R. William Hazelett - Colchester VT
John Pennucci - Grand Isle VT
S. Richard Hazelett - Colchester VT

Hazelett Strip-Casting Corporation - Colchester VT

B22D 1106

164481

Electrostatic application of a dusting of dry, electrostatically adherable, thermally insulative powder particles over a workface of a continuous metal-casting machine in which the mold surface or surfaces which provide the workface or workfaces revolve in a generally oval course. A dry dusting of protective powdery refractory material is applied to the workface after being entrained in an air stream and electrostatically charged by suitable electrostatic apparatus. The workface to be dusted is electrically grounded for attracting the charged powder particles for adhering them to the workface. The resultant coating formed by the dusting so deposited is remarkably uniform over a substantial area of the workface, a phenomenon explainable by mutual electrostatic repulsion of the dry powder particles being deposited. Continuously re-applied dusting over the workface during a continuous cast provides an immediately useful repair or replacement of dusting powder lost from the coating on the workface of a revolving mold surface during casting. The dusting may be removed at will by means of an air knife.

4487157, Dec 11, 1984

Nov 7, 1983

6/549652

Norman J. Bergeron - Burlington VT
Dean A. Boozan - Waterville VT
R. William Hazelett - Colchester VT

Hazelett Strip-Casting Corporation - Colchester VT

B05B 318

118 59

Machine for producing insulative and protective coatings on endless flexible metallic belts of continuous casting machines is described. The coating is applied to a revolving belt being supported and driven by pulleys in the machine. The coating is applied by thermally spraying a powdered mixture directly onto the roughened casting surface of the belt. The machine holds the revolving belt under tension and applies cooling to the rear (inner) surface of the revolving belt opposite to the region where the thermal spray gun is applying the coating to the belt.