Identification devices
First Claim
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1. A portable identification device comprising:
- a disposable outer housing, with a battery retained in the outer housing; and
a reusable transmitter unit, sealed entirely within the outer housing, and configured to transmit identification information at periodic intervals and/or when interrogated by a base station,wherein the transmitter unit comprises electrical contacts positioned so that an electrical connection between the battery and the transmitter unit is made automatically when the transmitter unit is inserted in the outer housing, and is broken automatically when the transmitter unit is removed from the outer housing, so that the transmitter unit can be installed into, and removed from, the outer housing independently of the battery.
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Abstract
An identification device comprising an ultrasound transmitter unit (16) and an outer housing (6) which receives said transmitter unit (16), said outer housing (6) comprising one or more apertures (32) which are sealed by a membrane, said membrane being substantially transparent to ultrasound when compared to the rest of the housing.
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Citations
15 Claims
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1. A portable identification device comprising:
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a disposable outer housing, with a battery retained in the outer housing; and a reusable transmitter unit, sealed entirely within the outer housing, and configured to transmit identification information at periodic intervals and/or when interrogated by a base station, wherein the transmitter unit comprises electrical contacts positioned so that an electrical connection between the battery and the transmitter unit is made automatically when the transmitter unit is inserted in the outer housing, and is broken automatically when the transmitter unit is removed from the outer housing, so that the transmitter unit can be installed into, and removed from, the outer housing independently of the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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- 13. A method of manufacturing a portable identification device, the method comprising inserting and sealing a transmitter unit entirely within an outer housing, wherein a battery is retained in the outer housing before the transmitter unit is inserted in the outer housing, wherein the battery is not electrically connected to the transmitter unit before the transmitter unit is inserted in the outer housing, and wherein the transmitter unit comprises electrical contacts positioned so that an electrical connection between the battery and the transmitter unit is made automatically upon said insertion of the transmitter unit in the outer housing, the transmitter unit being configured to transmit identification information at periodic intervals and/or when interrogated by a base station.
Specification