Spinners, you mean? Certainly, according to those who sell them.
The type sold by the carpet cleaning suppliers (Ashbys, Hydramaster etc) are purpose-built for internal hard floors - I would presume you could use them externally but not sure if rougher surfaces like concrete and block paving would damage the rubber strip used to make the seal to the floor. You'd also need to bear in mind that you're not "pressure washing" a surface using a your carpet extraction machinery, you're "rinsing" it.
The type Mike mentions above are specifically designed for external high pressure use but I'm sure are just as capable on a flat, smooth internal floor like vinyl or power-floated concrete. The minimum operating pressure of the pressure-washing type of spinner is going to be considerably higher than a hard floor spinner, above the capable pressures of most carpet extraction units.
This is all my opinion from what I've seen and read, I don't own a spinner by the way!