Weather and waterproof mobile device
Original Publication Date: 2002-Sep-01
Included in the Prior Art Database: 2003-Jul-23
One of the most common reasons for replacing mo- bile phones is that the phone unintentionally is dropped in water or left outdoors. This problem has only been solved by the traditional way of using silicone gaskets and buttons to seal the phone. There are accessories in forms of waterproof bags or life- belts, too.
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Weather and waterproof mobiledevice
Idee: Michael Høyer, DK–Aalborg
One of the most common reasons for replacing mo-bile phones is that the phone unintentionally isdropped in water or left outdoors. This problem hasonly been solved by the traditional way of usingsilicone gaskets and buttons to seal the phone. Thereare accessories in forms of waterproof bags or life-belts, too.
The proposed solution integrates an active water-proof system in the phone itself in order to avoidwater to leak into the phone destroying the hardware.The phone with silicone gaskets and buttons is addi-tionally equipped with a small cylinder with a mate-rial, that when it gets wet, produces an inactive gasthat makes an excess air pressure in the phone. Thiscylinder is made in a way that after taking in water, avalve closes the cylinder and the gas flows into thephone (figure 1).
Fig. 1: Gas producing cylinder principle
It should be easy to replace or refill the cylinder,which should be made with an indication on whetherit has been used. The cylinder could also be placedon the side of the phone filling an airbag that openswhen the mobile phone is dropped in water. In thiscase the phone comes to the surface after a while andcan be picked up.
Siemens Technik Report Jahrgang 5 Nr.18 August 2002