Portable Metal Detector Comprising A Helical Winding
AssigneeCostruzioni Elettroniche Industriali Automatismi S.p.A. C.E.I.A. S.P.A.
InventorGiovanni MANNESCHI
Life of this patent
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Abstract
The invention relates to a portable metal detector (I) comprising:—a cylindrical support (7) made of dielectric material which has a general direction of extension that defines an axis (X) of the metal detector (I), the cylindrical support (7) having, between a first end (9) and a second end (10) of the cylindrical support (7), a diameter (D) in a plane normal to the axis (X) of the detector; and an inductive sensor (5) comprising a winding (8) helically wound around the cylindrical support (7) from the first end (9) to the second end (10) of the cylindrical support (7) so as to form a helix, a pitch (P) of the helix being strictly greater than the diameter (D) of the cylindrical support (7).
Claims16
A portable metal detector comprising:
- a cylindrical support made of dielectric material having a general direction of extension defining an axis of the metal detector, the cylindrical support having, between a first end and a second end of the cylindrical support, a diameter in a plane normal to the axis of the detector;
- and
- an inductive sensor comprising:
- a transmitter winding helically coiled around the cylindrical support from the first end to the second end of the cylindrical support so as to form a transmitter helix;
- and
- a receiver winding helically coiled around the cylindrical support between the first end and the second end of the cylindrical support so as to form a receiver helix;
- a pitch of the transmitter helix and a pitch of the receiver helix being strictly greater than the diameter of the cylindrical support.
Dependencies are inferred from the claim text.