초록 ▼

The present invention relates to water-exposure protection of electronic circuitry within a mobile radio communication device such as a mobile cellular telephone. A water-absorbent packing is disposed around buttons or keys which extend through openings in the housing. The packing is able to absorb

The present invention relates to water-exposure protection of electronic circuitry within a mobile radio communication device such as a mobile cellular telephone. A water-absorbent packing is disposed around buttons or keys which extend through openings in the housing. The packing is able to absorb several times its volume of water. The water-absorbent packing absorbs the water as it enters the housing, thus stopping the further ingress of water and protecting the electronic components in the housing. Once the water source has been removed, the water absorbed by the material will evaporate restoring the full absorption capacity of the material.

대표청구항 ▼

[ What is claimed is:] [1.] A portable radio communications device, comprising:a) a housing having an interior surface and an exterior surface;b) electronic circuitry contained within said housing for performing the functions of the radio communications device;c) at least one opening through said ho

[ What is claimed is:] [1.] A portable radio communications device, comprising:a) a housing having an interior surface and an exterior surface;b) electronic circuitry contained within said housing for performing the functions of the radio communications device;c) at least one opening through said housing to permit passage of a radio component through said housing; andd) a liquid-absorbing packing constructed of compressed cellulose disposed on said interior surface of housing and adjacent said opening for absorbing liquid that seeps through said opening in said housing, and preventing said liquid from reaching said electronic circuitry.