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:
Jan. 20, 2004
Filed:
Jul. 22, 2002
Michael Charles Baker, Gretton, GB;
Moog Inc., East Aurora, NY (US);
Abstract
Apparatus ( ) for testing the extent of contaminants in a fluid during a test period, comprises: a source (P ) of pressurized fluid to be tested; a fluid sump (R); a first flow restriction (R ) adapted to be supplied with fluid flow from the source, the first flow restriction being configured as an annular clearance between a first land ( ) and a first bore ( ) and being sized and arranged so as to be progressively occluded by contaminants in the fluid flow during said test period; a second flow restriction (R ) arranged between the first flow restriction and said sump, the second flow restriction being configured as an annular clearance between a second land ( ) and a second bore ( ), the second flow restriction being substantially the same dimensionally as the first flow restriction so that the second flow restriction will not be occluded by contaminants passing through the first flow restriction and the pressure drops across each of the flow restrictions will be substantially equal at the beginning of a test period. In use, the improved apparatus performs an improved method.