The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 21, 1976
Filed:
May. 24, 1976
Applicant:
Inventors:
Rolf Schuster, Hanau, D;
Erwin Schumann, Bruchkobel, D;
Assignee:
Deutsche Gold- und Silber-Scheideanstalt vormals Roessler, Frankfurt, D;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
266250 ; 266252 ;
Abstract
There is provided a furnace for tempering and hardening workpieces comprising an annealing chamber and a quenching chamber constructed as a fluidized bed, the quenching chamber is arranged below the annealing chamber, the fluidized bed which is stationary during the annealing treatment serves as bottom temperature insulation for the annealing chamber, and the lateral heat insulation of the annealing chamber is extended to below the surface of the stationary fluidized bed.