Donald R Zacharias, 67721 State Route 89, Polk, OH 44866

6528010, Mar 4, 2003

Feb 7, 2001

09/778038

Donald R. Zacharias - Parma OH
Norbert A. Strobel - Hamilton, CA

Foseco International Limited - Wiltshire
Stelco Inc. - Hamilton

C21B 300

266275, 164337

A molten metal handling vessel, comprising a base and one or more sidewalls surrounding the base and extending upwardly therefrom, the interior surfaces of the base and sidewall(s) each comprising a lining formed from refractory material, the sidewall lining including a ledge spaced a distance from the base lining, the ledge projecting inwardly into the interior of the vessel and extending around at least a quarter of the periphery of the base, and all parts of the sidewall lining below the ledge projecting at least as far into the vessel as does the ledge.

6533992, Mar 18, 2003

Feb 4, 1999

09/244044

Donald Zacharias - Parma OH

Foseco International Limited - Swindon

B22D 4108

266275, 266229, 222594

A tundish of improved flow characteristics for molten metal has an outlet in its base. The outlet is spaced longitudinally of the tundish from a pour zone. The pour zone is positioned to receive a stream of molten steel from a ladle. An impact pad is provided on the floor of the tundish in the pour zone, the impact pad comprising a base having an impact surface, an upwardly extending side wall along the periphery of the base, the side wall having an inner surface with an undercut portion to face the incoming steel stream, and the undercut portion having a surface shape to receive and reverse the direction of flow of the incoming stream. A dam is positioned between the impact pad and the outlet. The dam has one or more holes to allow through-passage of a proportion of the steel, and the dam extends upwardly from the tundish floor about 40-60% of the height of the uppermost level of steel in the tundish.

6997361, Feb 14, 2006

Mar 25, 2003

10/395150

Donald Richard Zacharias - Parma OH, US
John Morris - Berea OH, US
Eric Wotsch - Lakewood OH, US

Foseco International Limited - Tamworth

C22B 41/08

222594, 266275, 266236

A tundish impact pad formed from refractory material comprising a base having an impact surface which, in use, faces upwardly against a stream of molten metal entering a tundish, a wall extending upwardly from the base around at least a part of the periphery of the impact surface, one or more portions of the upper part of the wall supporting one or more overhangs which project inwardly over the periphery of the base. At least one of said overhangs has at least a part whose under-surface curves or slopes, the curvature or slope lying in a direction along the length of the wall. Preferably the pad has rectangular base and a pair of opposite walls is provided with an overhang that arches upwardly towards the centre of the wall. An overhang on the second pair of walls can be, for example, planar and parallel to the base. The width of the curved or sloping overhangs increases in both directions away from its centre/top.

D605671, Dec 8, 2009

Apr 8, 2008

29/306379

Gerald Nitzl - Bocholt, DE
John Morris - Strongsville OH, US
Justin Vincent Singleton - Canal Fulton OH, US
Donald R. Zacharias - Parma OH, US
Eric Thomas Wotsch - Avon OH, US
Megan Joann Quick - Rochester NY, US

Refractory Intellectual Property GmbH & Co. KG - Wienerbergstrabe

1509

D15135

5518153, May 21, 1996

Nov 9, 1994

8/338123

Donald R. Zacharias - Parma OH
Bryce R. Jardine - Brunswick OH

Foseco International Limited - Birmingham

C21B 714

222594

A tundish impact pad has a non-uniform construction with a long dimension and a short dimension perpendicular to the long dimension, the long dimension of the impact pad disposed aligned with the long dimension of the tundish on the tundish floor. The impact pad is a body of refractory material capable of withstanding continuous contact with molten steel during the entire use cycle of the tundish. The body has a base with an impact surface, an endless outer side wall extending upwardly from the impact surface, and a top surface substantially parallel to the impact surface and connected to the side wall and defining a non-uniform opening. The side wall also has an interior face which is semi-circular about an axis substantially parallel to the impact surface around the entire extent thereof, or channel-shaped, so that molten steel contacting the impact surface flows outwardly, then in turn inwardly then directed upwardly by the side wall interior face, and then flows out the opening. The opening may be substantially rectangular or oval. The outer side wall may be tapered inwardly at opposite ends at the base and include ears which facilitate mounting of the body in place in a tundish, or may be straight.

5882577, Mar 16, 1999

Jul 10, 1997

8/860802

Donald R Zacharias - Parma OH

Foseco International Limited - Wiltshire

B22D 4100

266 45

A tundish of improved flow characteristics for molten metal has an outlet in its base. The outlet is spaced longitudinally of the tundish from a pour zone. The pour zone is positioned to receive a stream of molten steel from a ladle. An impact pad is provided on the floor of the tundish in the pour zone, the impact pad comprising a base having an impact surface, an upwardly extending side wall along the periphery of the base, the side wall having an inner surface with an undercut portion to face the incoming steel stream, and the undercut portion having a surface shape to receive and reverse the direction of flow of the incoming stream. A dam is positioned between the impact pad and the outlet. The dam has one or more holes to allow through-passage of a proportion of the steel, and the dam extends upwardly from the tundish floor about 40-60% of the height of the uppermost level of steel in the tundish.

6024260, Feb 15, 2000

Feb 7, 1998

9/029342

Donald R. Zacharias - Parma OH
Bryce R. Jardine - Brunswick OH

Foseco International Limited - Wiltshire

C22B 4108

222594

The impact pad (10) comprises a body of refractory material capable of withstanding contact with molten steel in a tundish, the body comprising a base (12) having an impact surface (13), an outer sidewall (14) extending upwardly from the impact surface (13), an annular portion (15) providing a top surface (16) substantially parallel to the impact surface (13) and connected to the sidewall (14) and defining an opening (11) into the pad, the lower face (17) of the annular portion (15), the inner face (18) of the sidewall (14) and the upper surface (19) of the base (12) adjacent the sidewall (14) together providing a continuous curved surface, which surface adjacent its lower end defines a trough (20) around the perimeter of the impact surface (13) of the base (12).

6159418, Dec 12, 2000

Oct 5, 1998

9/155761

Donald R. Zacharias - Parma OH

Foseco International Limited - Wiltshire

B22D 4100

266275

A tundish impact pad comprises the body of refractory material capable of withstanding contact with molten steel. The body comprises a base having an impact surface for molten steel, and an outer side wall extending upwardly from the impact surface. The outer side wall extends around the base to completely enclose it, an annular body portion connected to the side wall and providing a top surface substantially parallel to the impact surface and defining an opening into which molten steel can be poured. The lower surface of the annular body portion and the inner face of the side wall define a recess having an undercut portion extending continuously around and above the impact surface. A first portion of the top surface is at a lower level than the remainder at the top surface and the recess beneath the first portion of the top surface has a smaller cross-section than the remainder of the recess. The impact pad is particularly useful with a longitudinally-extending tundish having a steel inlet zone toward the end opposite to the outlet zone(s).