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:
Feb. 17, 2004
Filed:
Jun. 14, 2002
Friedrich B. Prinz, Woodside, CA (US);
Sangkyun Kang, Palo Alto, CA (US);
Tibor Fabian, Menlo Park, CA (US);
Georg Brasseur, Vienna, AT;
Jordan Tresser, Meriden, CT (US);
Francis Holman, Paradise Valley, AZ (US);
Hideaki Tsuru, Mountain View, CA (US);
Minoru Matsunaga, Tokyo, JP;
Other;
Abstract
In a micro gas turbine engine, a capacitive sensor is used for measuring a tip clearance of a radial compressor section thereof, and an actuator is used for axially displacing a rotor shaft in response to an output from the capacitive sensor. Because the capacitive change gives an accurate measure of the size of the tip clearance, a particularly high sensitivity can be achieved in parts where the tip clearance is small, thereby providing a highly precise tip clearance control.