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:
Jun. 18, 1996
Filed:
Feb. 22, 1993
Applicant:
Inventors:
William E Rumberger, Newtown Square, PA (US);
Charles R Gross, Norwood, PA (US);
Assignee:
The Boeing Company, Seattle, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N / ; G01R / ; G08B / ;
U.S. Cl.
CPC ...
324204 ; 324236 ; 340631 ;
Abstract
A debris detecting apparatus is provided which collects debris from a fluid system in a screen member and measures the accumulation of debris by measuring the change of inductance in a coil surrounding a portion of the screen member. A bridge detection means is used which includes the inductive coil as one leg of the bridge. A second sensor in the fluid connected as a second leg of the bridge provides temperature compensation for the bridge. The bridge is excited with a high frequency voltage at or near the resonant frequency of the sensing coil.