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:
Feb. 13, 2018
Filed:
Oct. 08, 2013
Ipsen, Inc., Cherry Valley, IL (US);
Rolf Sarres, Oberhausen, DE;
Marc Angenendt, Rees, DE;
Ipsen, Inc., Cherry Valley, IL (US);
Abstract
An industrial furnace () into which protective gas is admitted for the heat treatment of batches () of metal workpieces is described. The heat treating furnace includes an entrance lock () which can be sealed with respect to the surrounding environment by means of a first gas-tight closure device (). The heat treating furnace also includes a third gas-tight closure device () disposed between a heat treatment chamber () of the furnace and a quenching facility () at the exit of the heat treatment chamber. With the foregoing arrangement a pressure of the protective gas admitted into the heat treatment chamber () can be maintained during loading and unloading of a batch of metal workpieces (). The entrance lock may be configured as a dual-chamber vertical arrangement or as a single chamber horizontal arrangement.