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:
Sep. 17, 2002
Filed:
May. 01, 2001
AND Design Limited, London, GB;
Abstract
A two-axis angle sensor comprising a pair of bubble chambers ( ) and associated bubble detectors ( ). A processor ( ) calculates the angle of the sensor by combining the signals from the first and second bubble detectors in accordance with a predetermined algorithm. A radiation source ( ) illuminates a bubble ( ) with radiation whereby the radiation is refracted by the bubble. A radiation detector ( ) is positioned to detect the refracted radiation from the bubble and generate a signal indicative of the angle of the bubble chamber. An angle sensor is used to calibrate a vibrating structure gyroscope ( ). A flywheel ( ) is provided to generate a gyroscopic resistance to operator input. A method of manufacturing a bubble angle sensor is disclosed, the method employing a lid ( ) with an internal recess ( ).