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. 31, 2002
Filed:
May. 30, 2001
Christianus Gerardus Maria De Ridder, Hoogland, NL;
Pieter Johannes Quintus Van Voorst Vader, Son, NL;
ASM International N.V., AC Bilthoven, NL;
Abstract
A joint assembly for connecting two ceramic material tubes has a cup-ball interface. One of the tubes has at a first end a cup shaped member, and the other tube has at a first end a ball shaped member adapted to be received in the cup shaped member. The ball shaped member and the cup shaped member define the cup-ball interface. The cup shaped member is provided with a gas feed channel discharging at a first end into an annular groove at the cup-ball interface. At the other end, the cup shaped member is connected to a conduit outside the cup shaped member. The conduit is connected to an inert gas source having a pressure above atmospheric pressure.