In weaving machines, one main motor takes charge of the movement of all the mechanics of system. Sometimes, as tuning, it's necesary that machine works in a slow speed. Normally, a second motor it's used to get these movements in slow speed, disconnecting the main motor. The conexion between the main motor and the mechanics of weaving machine is made by a clutch. The idea of the patent consist of making work sliding over the clutch so the final displacement speed of the weaving machine could reach a relation of 20/1. In this way, the second motor, the corresponding clutch and necesary mechanics can be eliminated.

When marking by solenoid is needed to actuate over a material by deformation impact or by grooving, two diferent solenoid must be used. This is becouse in the impact by dots a high energy it's necesary in very short time, while grooving needs to keep exciting the solenoid permanently over all the cycle. Using same solenoid for both ways, will damage the solenoid by overheating in one case and will lose force for marking dots in other case. With the patented system, both marking system can work together with only one solenoid without having any kind of conflicts.

Sometimes, it's necesary to bar traffic in one road to let circulating in both directions when only one track is enabled. To control the traffic two portable traffic lights are necesary for enabling circulating in one sense and for disabling in the other sense, logically, keeping a cycle which lets circulating all vehicles moving in one direction before enabling the circulation in the other direcction. The usual way traffic lights work is synchonizating them by a cable that join each other, or in the best way by a radioelectric union. With system that PYFESA patented it's not necesary neither fisic nor radioelectric union between both traffic lights to control the traffic.