Patent ID: 8339382
Filing Date: 2012-12-25
Classification: G06F

Abstract:
1. A stylus, comprising: a tube body defining a gas conduit extending therethrough; a touch end connected to the tube body; an inflatable balloon enwrapping the tube body such that the tube body and the balloon cooperatively define a sealed chamber; and an inflating mechanism for inserting gas into the sealed chamber to inflate the balloon; a gas intake comprising a valve member and an obstructing member movably received in the valve member for controlling the gas to flow into the sealed chamber; and a gas outlet, directly connected to the inflatable balloon, through which gas is vented out of the sealed chamber to allow the balloon to return to an original shape; wherein the valve member defines a hole for communicating the gas conduit and the sealed chamber, the obstructing body is movably received in the hole; the valve member comprises a conical inner surface whose largest diameter is adjacent to the sealed chamber, and the obstructing member is substantially spherical and movably received in a chamber defined by the inner surface.