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. 29, 2003
Filed:
Mar. 29, 2002
Craig Brainerd Van Cleve, Lyons, CO (US);
Theodore L. Bertchie, Berthoud, CO (US);
Micro Motion, Inc., Boulder, CO (US);
Abstract
A manufacturing process that prevents stress between a titanium flow tube and a surrounding steel balance bar due to a brazing operation. A straight tube Coriolis flowmeter having a titanium flow tube is surrounded by a balance bar having separate longitudinal halves. The balance bar halves are connected to each other by an elongated side channel on each side of the balance bar halves. The elongated side channels are radially spaced apart from the balance bar halves but connected to the balance bar halves by means of tubular pegs which extend into holes in the side channels. The flow tube is joined by brazing via connecting rings to the balance bar halves and to an inner end of the pegs. The radially outer end of the pegs are inserted into the holes in the side channels and welded. Circular welds and slots in the side channels reduce axial shrinkage of the side channels as the welds cool. This prevents axial stress on the flow tube.