Bullseye indicator and method
OwnerHoon Kiang Taninventor
Life of this patent
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Abstract
A bulls eye indicator device and method of manufacture used to measure the two-dimension angle of inclination of equipment that is mounted on a sea bed. A base and transparent window are sealed and fastened together. The transparent window is spherical and forms a dome. A volume between the base and transparent window is filled or substantially filled with liquid. A floating sphere floats against the two-dimensional angular degree indicia.
Claims15
A bulls eye indicator for use in measuring a two-dimensional angle of inclination of equipment, which is mounted on an underwater bed, said bulls eye indicator comprising:
- a base;
- a transparent window sealed with respect to said base and forming a volume therebetween, said transparent window being sufficiently resistant to pressure for operating on said underwater bed;
- a liquid which at least substantially fills said volume between said base and said transparent window;
- a floating rigid ball within said volume, said floating rigid ball comprised of a solid material with an average density less than a density of said liquid positioned in said volume;
- a plurality of angle measurement lines formed on said transparent window, said plurality of angle measurement lines indicating said two-dimensional angle, said first angle measurement line extending through a zero angle level indication configured for measuring a first angle in a first dimension with a range of measurement extending to opposite sides of said zero angle level along said first measurement line, and a second angle measurement line also extending through said zero angle level configured for measuring a second angle in a second dimension with a range of measurement extending to opposite sides of said zero angle level along said second measurement line;
- whereby said floating rigid ball floats upwardly in said liquid to thereby contact said transparent window for visually indicating said two-dimensional angle.
A method for a bulls eye indicator used to measure a two-dimensional inclination of a subsea object, comprising the steps of:
- providing a base;
- sealingly mounting a transparent window to said base and forming a volume;
- introducing a liquid into said volume which at least substantially fills said volume between said base and said transparent window;
- providing a rigid floating member within said volume, providing that said rigid floating member has an average density less than a density of said liquid to thereby float up in said liquid to contact said transparent window;
- and
- providing a plurality of angle measurement lines on said transparent window, said plurality of angle measurement lines indicating said two-dimensional inclination.
Dependencies are inferred from the claim text.