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:
Mar. 02, 2004
Filed:
May. 31, 2001
Applicant:
Inventor:
Klaus Reiser, Bad Ischl, AT;
Assignee:
Hoffman & Co Elektrokohle Aktiengesellschaft, Steeg, AT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D 1/900 ; B22D 1/914 ; C01B 3/102 ;
U.S. Cl.
CPC ...
B22D 1/900 ; B22D 1/914 ; C01B 3/102 ;
Abstract
In order to impregnate a porous workpiece with a liquid impregnating agent, the pre-manufactured workpiece is arranged in an injection mould or diecasting mould and the liquid impregnating agent is introduced into the mould with the aid of a commercially available injection moulding or diecast moulding apparatus. To limit the need for post impregnation cleaning and/or shaping, the mould cavity is configured to closely fit the shape of the pre-manufactured workpiece. The impregnating agent may be a natural or synthetic lubricant, a plastic or, more commonly, a molten metal or metal alloy.