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:
Nov. 14, 2000
Filed:
Oct. 23, 1998
Applicant:
Inventors:
Klaus Loser, Mainhausen, DE;
Wilfried Zenker, Hartland, CT (US);
Assignee:
ALD Vacuum Technologies AG, Hanau, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F27B / ;
U.S. Cl.
CPC ...
219388 ; 34661 ; 432-9 ; 432 11 ; 432243 ;
Abstract
An apparatus for the heat treatment of work pieces comprising comprising a plurality of evacuable chambers connected through airlocks, a conveyor, preferably a circular chain conveyor for the transport of the workpieces along a path through the chambers, an electric resistance heating device, a cooling blower, and a heat exchanger, a plurality of workpieces of equal size and configuration, in particular hacksaw blades, are placed tightly one on top of another and form a stack which is placed into a frame made of profile cuts, whereby the frame is capable of being coupled to a conveyor by means of suspension elements.