Reversed Conical cams system

This kind of desmo has the following characteristics:
Radial 4 valve desmo
(in- and outletvalves crosslike opposite to one another)
with reversed conical opening and closing cam.
One framelike camsfollower with attached valve.
Invented and made by Karel Horak (see "systems" as well).
System patented in 1969.

(Classification = Group 4)