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:
Jul. 15, 2008
Filed:
Jul. 20, 2005
Stuart Motew, The Woodlands, TX (US);
David Mcwilliams, The Woodlands, TX (US);
Douglas Ducote, The Woodlands, TX (US);
William Middleton, Houston, TX (US);
John Bonn, Hilliard, OH (US);
Stuart Motew, The Woodlands, TX (US);
David McWilliams, The Woodlands, TX (US);
Douglas Ducote, The Woodlands, TX (US);
William Middleton, Houston, TX (US);
John Bonn, Hilliard, OH (US);
Chart Industries, Inc., Garfield Heights, OH (US);
Abstract
A cryogenic seal for vacuum-insulated pipe systems where the pipe system includes an inner pipe connected to an outer pipe by a bellows. The seal prevents cryogenic liquid from leaking from the inner pipe into the annular vacuum space between the inner and outer pipes in the event of bellows failure. One end of the bellows is connected to the inner pipe by a movable bellows ring and the other end of the bellows is attached to the outer pipe by a fixed bellows ring. A bellows guide is attached to the fixed bellows ring and receives the movable bellows ring in a sliding fashion. The seal may be positioned between the movable bellows ring and the bellows guide or between the fixed bellows ring and the outer surface of the inner pipe. The seal may also be positioned between the bellows shield and the movable bellows ring. The seal may be a leak control ring or the packed gland type.