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:
May. 22, 2001
Filed:
Oct. 19, 1998
Andrew P. Collins, Worcester, GB;
Steven M Dixon, West Midlands, GB;
Christopher Edwards, Coventry, GB;
Stuart B Palmer, Warwickshire, GB;
M & A Packaging Services Limited, Worcestershire, GB;
Abstract
The invention provides an apparatus and method for fill level monitoring in which the height of contents in a container (,) is monitored. The apparatus comprises an ultrasound reciever (,) and signal processing means (,) adapted to receive signals from the receiver, the arrangement being such that the signal processing means (,) identifies a first signal (,), in use, which is representative of a wavefront (,) transmitted through the contents of the container (,) independently of the height of the contents in the container (,), and a second signal (,) that is representative of a wavefront (,) that is reflected from the interface (,) between the surface of the contents in the container (,) and the environment above the contents, and in which the signal processing means (,) uses the difference in travel time for the two wavefronts (,) to provide a measurement of the level of the contents in the container (,). A plasma generation system comprising a pulsed laser (,) and a target (,) in front of the container (,) is also disclosed, the plasma (,) creating ultrasound in the container (,).