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US 6,272,762 B1Granted
Ovality measurement method and apparatus
AssigneeGas Research Institute
InventorsJohn Arthur Kinast, William Fredrick Rush, Victor Tamosaitis
Life of this patent
Estimating the term…
Abstract
An ovality measurement tool for measurement of ovality of a circumferentially deformable cylindrical element having a cylindrical element support, a sensing element for traversing the circumference of the cylindrical element, which sensing element is movable radially with respect to the cylindrical element, and a readout device for reading the amount of movement of the sensing element as it traverses the circumference of the cylindrical element.
Claims16
A method for measuring ovality of a circumferentially deformable cylindrical element comprising the steps of:
- positioning said deformable cylindrical element in an ovality measurement tool comprising a cylindrical element support having at least two contact elements, each said contact element having a cylindrical contact point end, and an indicator means having one sensing element, said sensing element having a sensing element end movable radially with respect to said deformable cylindrical element and connected to said cylindrical element support and bisecting an angle formed by said contact point ends and a point of connection of said sensing element to said cylindrical element support, whereby said deformable cylindrical element simultaneously contacts said contact point ends and said sensing element end;
- traversing at least 180° of the circumference of said deformable cylindrical element with said sensing element end;
- measuring a radial displacement of said sensing element end during said traversal of said circumference of said deformable cylindrical element;
- and
- converting said radial displacement measurement to a percent ovality reading.
2 more elements
An apparatus comprising:
- a cylindrical element support comprising at least two contact elements, each said contact element comprising at least one cylindrical element contact point end;
- one sensing element having a sensing element end, said sensing element movably connected to said contact element and bisecting an angle formed by said cylindrical element contact point ends and a connection point of said sensing element to said contact element, said sensing element movable in a longitudinal direction;
- indicator means for reading an amount of movement of said sensing element end operatively connected to said sensing element;
- and
- ovality means for converting said movement of said sensing element end to an ovality of said circumferentially deformable cylindrical element.
2 more elements
Dependencies are inferred from the claim text.