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. 03, 2019
Filed:
Dec. 15, 2016
Mettler-toledo Safeline Ltd., Manchester, GB;
Paul Rigby, Bolton, GB;
METTLER-TOLEDO SAFELINE LTD., Salford, Manchester, GB;
Abstract
An apparatus () for detecting metal is equipped with at least one test device () with a non-metallic guide tube (). Only a proximal end of the guide tube is connected to a pneumatic control unit (). A distal end of the guide tube has at least one first ventilation port (). A test article (), having a known mass of metal, is movable back and forth between the proximal end and the distal end of the guide tube, at least through a section of an electromagnetic field, to verify operation of the metal detection The pneumatic control unit can use air pressure, either elevated above or reduced below the ambient pressure, applied to the proximal end of the guide tube in order to drive the test article back and forth, or only in one direction if it is returned by gravitational force.