Metal treatment – Process of modifying or maintaining internal physical... – Heating or cooling of solid metal
Reexamination Certificate
2008-04-08
2008-04-08
Yee, Deborah (Department: 1793)
Metal treatment
Process of modifying or maintaining internal physical...
Heating or cooling of solid metal
C266S113000
Reexamination Certificate
active
07354493
ABSTRACT:
Disclosed is a method for patenting at least one steel wire, according to which the temperature is increased at least to a level at which the steel austenitizes, followed by quenching in a liquid medium by directing the wire through at least one curtain of cooling liquid so as to obtain a cooling temperature that lies below the austenitizing temperature, the liquid flowing in a turbulent manner substantially perpendicular to the wire, followed by an isothermal stage during which the wire is maintained at a constant temperature allowing pearlitic transformation. The inventive method is characterized by the fact that additionally, a number of successive curtains can be specifically adjusted so as to obtain the temperature which allows pearlitic transformation and is to be kept constant during the isothermal stage as the cooling temperature through the cooling process in a liquid medium, and the isothermal stage immediately follows the cooling process in a liquid medium.
REFERENCES:
patent: 3997376 (1976-12-01), Hemsath et al.
patent: 4168993 (1979-09-01), Wilson et al.
patent: 4305765 (1981-12-01), Wilmotte et al.
patent: 4570453 (1986-02-01), Kamio et al.
patent: 5121902 (1992-06-01), Jalil et al.
patent: 5146759 (1992-09-01), Eguchi et al.
patent: 2004/0244886 (2004-12-01), Tsuyama et al.
patent: 838796 (1976-06-01), None
patent: 0 178 799 (1986-04-01), None
patent: 0 216 434 (1987-04-01), None
patent: 0 359 279 (1990-03-01), None
patent: 0 524 689 (1993-01-01), None
patent: 832.391 (1975-01-01), None
patent: 2 300 810 (1976-09-01), None
patent: 404280920 (1992-10-01), None
patent: WO-01/73141 (2001-10-01), None
Birch & Stewart Kolasch & Birch, LLP
Le Four Industriel Belge
Yee Deborah
LandOfFree
Method and device for patenting steel wires does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and device for patenting steel wires, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and device for patenting steel wires will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2742768