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:
Dec. 01, 2009
Filed:
Oct. 29, 2007
Apparatus and method for attenuating acoustic waves in pipe walls for clamp-on ultrasonic flow meter
Mark Fernald, Enfield, CT (US);
Daniel L. Gysling, Glastonbury, CT (US);
Timothy J. Bailey, Longmeadow, MA (US);
Changjiu Dang, Wallingford, CT (US);
Mark Fernald, Enfield, CT (US);
Daniel L. Gysling, Glastonbury, CT (US);
Timothy J. Bailey, Longmeadow, MA (US);
Changjiu Dang, Wallingford, CT (US);
Expro Meters, Inc., Wallingford, CT (US);
Abstract
An apparatus is presented for damping an undesired component of an ultrasonic signal. The apparatus includes a sensor affixed to a pipe. The sensor includes a transmitter and a receiver. The transmitted ultrasonic signal includes a structural component propagating through the pipe and a fluid component propagating through a flow in the pipe. The receiver receives one of the transmitted components. The apparatus includes a damping structure. The damping structure dampens the structural component of the ultrasonic signal to impede propagation of the structural component to the receiver. The damping structure includes one of a housing secured to the pipe to modify ultrasonic vibrational characteristics thereof, a plurality of film assemblies including a tunable circuit to attenuate structural vibration of the pipe, and a plurality of blocks affixed to the pipe to either reflect or propagates through the blocks, the undesired structural component of the ultrasonic signal.