DAVID A LEHR
Engineers in Medina, OH
License number
Pennsylvania PE035761E
Category
Engineers
Type
Professional Engineer
Address
Address
2
Medina, OH 44256
Pennsylvania
Pennsylvania
Professional information
Spray Cooled Hood System For Handling Hot Gases From A Metallurgical Vessel Utilizing Pneumatic Processing Of Molten Metal
US Patent:
5330161, Jul 19, 1994
Filed:
Jul 8, 1993
Appl. No.:
8/088800
Inventors:
David A. Lehr - Medina OH
Gordon R. Roberts - North Olmsted OH
Mark T. Arthur - Lakewood OH
Gordon R. Roberts - North Olmsted OH
Mark T. Arthur - Lakewood OH
Assignee:
Ucar Carbon Technology Corporation - Danbury CT
International Classification:
C21C 538
US Classification:
266158
Abstract:
Hood assembly for pneumatic process metallurgical vessel, such as BOF, which includes removeable spray cooled sub-assemblies at predetermined locations in the hood assembly.
Apparatus For Lengthwise Graphitization (Lwg) Of Carbon Electrode Bodies
US Patent:
5631919, May 20, 1997
Filed:
Nov 21, 1995
Appl. No.:
8/561369
Inventors:
Allan W. Intermill - Strongsville OH
Francis E. Wise - Medina OH
David A. Lehr - Medina OH
Francis E. Wise - Medina OH
David A. Lehr - Medina OH
Assignee:
UCAR Carbon Technology Corporation - Danbury CT
International Classification:
H05B 300
US Classification:
373120
Abstract:
A furnace apparatus and method for the lengthwise graphitization (LWG) of carbon bodies are provided which utilize U-shaped metal furnace sections mounted on stationary rib supports to contain carbon electrode bodies and surrounding thermally insulating pack material. Vertical flues are provided between parallel rows of U-shaped metal furnace sections to accelerate cooling of graphitized electrode bodies and in a further embodiment water droplets are additionally sprayed on the metal furnace sections.
Modular Spray Cooled Side-Wall For Electric Arc Furnaces
US Patent:
5561685, Oct 1, 1996
Filed:
Apr 27, 1995
Appl. No.:
8/429923
Inventors:
David A. Lehr - Medina OH
Gordon R. Roberts - North Olmstead OH
Frank H. Miner - North Olmstead OH
William H. Burwell - Olmstead Falls OH
Mark T. Arthur - Lakewood OH
Gordon R. Roberts - North Olmstead OH
Frank H. Miner - North Olmstead OH
William H. Burwell - Olmstead Falls OH
Mark T. Arthur - Lakewood OH
Assignee:
UCAR Carbon Technology Corporation - Danbury CT
International Classification:
F27D 112
US Classification:
373 76
Abstract:
Spray cooled side-wall assembly for an electric arc furnace which includes individual spray cooled segments joined together to form a furnace side-wall. One or more of the segments can be arch-shaped and surround a spray cooled sub-assembly to address conditions of high thermal stress.