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. 12, 2018
Filed:
Jun. 27, 2012
Simon Wray Goodyear, Malvern, GB;
Simon Edward James Collinge, Cranfield, GB;
Mark Nicholas Keene, Malvern, GB;
Simon Wray Goodyear, Malvern, GB;
Simon Edward James Collinge, Cranfield, GB;
Mark Nicholas Keene, Malvern, GB;
Metrasens Limited, Malvern, GB;
Abstract
Apparatus for detecting a ferromagnetic object located on or in a person being screened comprises a first magnetic sensor which in use measures an ambient magnetic field or gradient within a first volume of space and produces a corresponding measurement signal, a primary power supply which provides power to the magnetic sensor, a signal processing circuit arranged in communication with the magnetic sensors configured to identify temporal variations in the measurement signal and from the identified temporal variations provide an output signal indicative of the presence of a ferromagnetic object within the volume of space, and a warning device operable by the output from the signal processing circuit to provide within the vicinity the apparatus at least one of an audible and a visible warning in response to the output signal from the signal processing circuit. The apparatus include a user operable input means which enables the warning device to be disabled by a user without powering down the magnetic sensors.