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. 05, 2007
Filed:
Dec. 13, 2004
Michael Jon Gustafson, Burnsville, MN (US);
John R. Hacker, Bloomington, MN (US);
John F. Connelly, Chanhassen, MN (US);
Gus E. Breiland, Minneapolis, MN (US);
Michael Jon Gustafson, Burnsville, MN (US);
John R. Hacker, Bloomington, MN (US);
John F. Connelly, Chanhassen, MN (US);
Gus E. Breiland, Minneapolis, MN (US);
Donaldson Company, Inc., Minneapolis, MN (US);
Abstract
An apparatus for measuring the differential pressure of fluid in filter. The apparatus comprises a housing defining a pressure chamber. A differential pressure gauge divides the pressure chamber into first and second fluid chambers. The differential pressure gauge is arranged to measure a differential pressure between fluid in the first chamber and fluid in the second chamber. The differential pressure gauge has a variable output.