Proximity transponder system
AssigneeImpro Technologies (PTY) Ltd.
InventorErrol Peter East
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Abstract
The invention relates to an operating unit of a proximity transponder system. The unit has a housing of which the walls are formed predominantly of a metallic material, a space being defined in the walls in the region where the induction coil of the unit is located. This space is configured to permit magnetic flux lines to pass through the walls of the housing via the said space, thereby to permit inductive coupling with the induction coil of another operating unit. By forming the housing of predominantly a metallic material, possible tampering with the unit is greatly inhibited.
Claims9
An operating unit of a proximity transponder system, which has a housing having walls formed at least predominantly of a metallic material and in which the walls, in the location of the induction coil of the unit housed in the housing, define a space that is configured to permit magnetic flux lines to pass through the walls of the housing via the said space and thereby to permit inductive coupling with the induction coil of another operating unit.
Dependencies are inferred from the claim text.