  We present a simple device made of two small capacitively coupled quantum
dots in parallel. This set-up can be used as an efficient "Stern-Gerlach" spin
filter, able to simultaneously produce, from a normal metallic lead, two
oppositely spin-polarized currents when submitted to a local magnetic field.
Our proposal is based on the realization of a Kondo effect where spin and
orbital degrees of freedom are entangled, allowing a spatial separation between
the two spin polarized currents. In the low temperature Kondo regime, the
efficiency is very high and the device conductance reaches the unitary limit,
$\frac{e^2}{h}$ per spin branch.
