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. 01, 2005
Filed:
Dec. 12, 2002
Terrance F. Krouth, Eden Prairie, MN (US);
David E. Wiklund, Eden Prairie, MN (US);
Richard J. Habegger, Wolcottville, IN (US);
Richard R. Hineman, Gunterville, AL (US);
Terrance F. Krouth, Eden Prairie, MN (US);
David E. Wiklund, Eden Prairie, MN (US);
Richard J. Habegger, Wolcottville, IN (US);
Richard R. Hineman, Gunterville, AL (US);
Rosemount Inc., Eden Prairie, MN (US);
Abstract
A method and device for use with a hydraulic system is adapted to measure a position, velocity and/or acceleration of a piston of a hydraulic actuator based upon differential pressure measurement. The device of the present invention utilizes a differential pressure flow sensor to establish a flow rate of a hydraulic fluid flow traveling into and out of a cavity of the hydraulic actuator, from which the position, velocity and acceleration of the piston can be determined.