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. 02, 1992
Filed:
Jun. 28, 1990
Applicant:
Inventor:
William E Rumberger, Newton Square, PA (US);
Assignee:
The Boeing Company, Seattle, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N / ;
U.S. Cl.
CPC ...
210 85 ; 73 64 ; 73 6461 ; 210243 ; 324204 ; 340631 ;
Abstract
An inductive coil shaped screen traps debris in a fluid and senses the accumulation of the debris. The shaped screen coil comprises non-conductive wires parallel to one another and at least one conductive wire coil perpendicular and woven with the non-conductive wires. The conductive wire is a coil of an inductor. As debris accumulates within the coil, inductance immediately changes and indicates the accumulation of debris in the screen. Another coil connects with the first coil in a bridge circuit to compensate for changes in temperature of the fluid.