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. 02, 1988
Filed:
Apr. 11, 1986
William L Mankins, Huntington, WV (US);
INCO Alloys International, Inc., Huntington, WV (US);
Abstract
An apparatus (10) and method for consolidating and sintering a tube preform (12) previously fabricated by powder metallurgical techniques. A plurality of forming dies (22, 24) and movable mandrels (30, 32) cooperate to form tube consolidation zone (58,60). One-way tube gripping means (42) permit the tube (12) to progress through the apparatus (10) by the retraction of the mandrels (30, 32) while preventing the tube (12) from retreating back into the zone (58) when the mandrel (30, 32) is advanced. Heating coils (18A, 18B and 18C) heat the tube (12) to sinter it and cause it to expand clear of the mandrels (30, 32). The tube (12) is reduced in diameter and consolidated to greater than 90% theoretical density.