Hold off for the moment from patent matters with more practical tasks in hand, like how to build a narrow airframe to suit a passenger broader in the beam?
After kicking both airframe and ideas around in the workshop ~ and after plumbing the depths of developmental despair recently ~ there's something of a breakthrough.
I've reduced the height of the 'box' by a quarter and added it to the clearance for the propellers on the lower quad, by raising the skids by the same height.
The optimal way then to support the passenger upon this 'mother of all chairlifts' is to turn him, her or whomever the mannekin chooses to be along the gender spectrum...
... sideways.
Passengers like drones are not directionally biased, whilst any number of helicopters have been flown in this way in support of shooting video in the best case, and people in the worst.
Airframe's a closed book now as am finally satisfied this is as solid and compact an outline as can be conceived within the practical constraints.
This is all best done in phases and the next task is to fit the avionics required to allow the lower quad to be wired for lift.