Metallurgical apparatus – Means treating solid metal – By contact with gas
Reexamination Certificate
2003-12-02
2009-06-02
Sheehan, John P. (Department: 1793)
Metallurgical apparatus
Means treating solid metal
By contact with gas
C266S258000, C148S579000, C148S627000, C148S640000
Reexamination Certificate
active
07540993
ABSTRACT:
The interior of a furnace is partitioned into two longitudinally extending and transversely adjacent zones, and one of the zones is heated to a substantially higher treatment temperature than the other of the zones, which may or may not be heated. A steel workpiece is conveyed longitudinally through the furnace with a region of the workpiece moving exclusively through the one zone and another region of the workpiece moving exclusively through the other of the zones such that the regions are heated to different temperatures. The treatment temperature in one of the zone is above the AC1point for the workpiece and the temperature in the other of the zones is close to or below the AC1point for the workpiece.
REFERENCES:
patent: 1949716 (1934-03-01), Harsch
patent: 3716222 (1973-02-01), Anderson
patent: 4622006 (1986-11-01), Hohne
patent: 5238510 (1993-08-01), Dutton et al.
patent: 5972134 (1999-10-01), Buschsieweke
patent: 6524404 (2003-02-01), Gehringhoff et al.
patent: 2004/0060623 (2004-04-01), Boke et al.
patent: 2004/0129355 (2004-07-01), Hower et al.
The ASM Handbook, Classification and Designation of Carbon and Low-Allow Steels, Mar. 30, 1990, vol. 1, p. 140.
Böke Johannes
Krogmeier Jürgen
Reinhold Patrick
Benteler Automobiltechnik GmbH
Roe Jessee R.
Sheehan John P.
Wilford Andrew
LandOfFree
Continuous process for production of steel part with regions... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Continuous process for production of steel part with regions..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Continuous process for production of steel part with regions... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4115838