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US 5,850,039 AGranted
Coriolis flowmeter having axially compliant case ends
AssigneeMicro Motion, Inc.
InventorsCraig Brainerd Van Cleve, Roger Scott Loving, Gregory Treat Lanham
Life of this patent
Estimating the term…
Abstract
A flowmeter positioned inside a case having compliant membranes for case ends. The membranes have an axial compliance sufficient to allow the flow tube to expand/contract freely in response to thermal changes without a permanent deformation of the flow tube.
Claims19
A flowmeter comprising:
- a case having a first and a second end;
- a membrane means defining at least one end of said case;
- a perimeter of said membrane means affixed to an inner wall portion of said case;
- a substantially straight flow tube means positioned within and substantially parallel to said case and extending axially at a substantially constant diameter from within said case and through said membrane means to a terminus exterior to said case;
- said flow tube means being affixed to said membrane means;
- said membrane means comprises at least one membrane having a transverse dimension substantially greater than its thickness;
- said membrane means having an axial compliance sufficient to enable said flow tube means to increase or decrease in length without permanent deformation in response to thermal changes of said flow tube means with respect to said case.
4 more elements
A flowmeter comprising:
- a cylindrical case;
- a disk like membrane means defining at least one end of said case and positioned inside said case perpendicular to a longitudinal axis of said case;
- a perimeter of said membrane means affixed to an inner cylindrical wall portion of said case;
- a substantially straight flow tube means having a substantially constant diameter positioned within said case parallel to the longitudinal axis of said case with end portions of said flow tube means extending at said substantially constant diameter through said membrane means to a terminus external to said case for coupling said flow tube means to a material source and a material receiver;
- said membrane means having transverse dimension substantially greater than its thickness and having an axial compliance substantially large to enable said flow tube means to expand/contract axially without permanent deformation in response to thermal changes in said flow tube means with respect to said case.
2 more elements
Dependencies are inferred from the claim text.