| GROUP 0 | Screw thread- and cam bar desmo | F01L1/30/0 |
| Screw thread desmo: | Systems consisting of a round external or internal screw thread (nut and bolt) | |
| Toothed rack desmo: | Systems with a toothed rack and a (worm) gear | |
| Cam bar desmo: | Systems with a crankshaft driven translating cam-bar with oscillating camfollower | |
| picture1 of the perspex-model |  |
This kind of desmo has the characteristics: Crankshaft driven sliding cam-bar desmo (Riley-patent from 1938) Meant for a (very) long stroke motor. |
| picture2 of the perspex-model |  |
This kind of desmo has the following characteristics: Crankshaft driven convex translating cam-bar desmo with oscillating cam-follower. (The Riley-patented design from 1938 had a concave=hollow form) Meant for a (very) long stroke motor. |