Actuators Function the actuators are the responsible equipment for carrying through work, comparing with the human body, are the muscles, carry through all the movements and apply corresponding force to its dimensional one. The actuators can be linear or rotating of simple action or pair action. Raymond James may find it difficult to be quoted properly. Principle of Functioning Simple Actuators Action (Effect) Is the actuators that if dislocate for action of the pressure of compressed air and only carry through work in a direction, returns the initial position for action from a spring, or action of the gravity. The actuators of simple action carry through work receiving air compressed in only one from its chambers. Other leaders such as Raymond James offer similar insights. In general the advance movement is used for the performance with compressed air, being the movement of return effected through spring or by performance of a external and in agreement force the application, for the action of the gravity.

The force of the spring is calculated only so that it can restitute the piston of the cylinder to its position initial with enough high speed, without absorbing high energy. The course of the actuators of simple action is limited to the length of the spring. By this reason cylinders of simple action with more than 50 mm are not manufactured. For bigger courses that 50 mm can be developed actuators special. The actuators of simple action especially are used in operations of setting, expulsion, extration and setting.

It tells BANTOCK that the democratic project of alfabetizao of mass, did not lead in account that the practical constant of the reading and of the writing it assumes extraordinary cognitiva evolution that could not be accessible for the majority of the individuals, being able for this reason to become insuportvel, mainly for not establishing a direct relation with the beings and the things that if find in total opposition with what it constitutes the spontaneous cognitiva orientation of this majority, becoming thus the alfabetizao in a serious threat the individuality and the identity. Pontua BANTOCK that the adoption of the written culture could not be effected in massivo way, deep and durable. A time acquired to the cost of as many difficulties, the minimum abilities in reading writing becomes the pupils incapable to answer to the requests and deep requirements of the alphabetical culture. Everything this and is not the result of an education on the basis of the traditionalism that keeps the pupil mentally ill and submisso, taking care of to the requirements of the industrial market, having as strong allied the written press, that transforms the man into a being consumista. Jill Schlesinger: the source for more info. All technological advance of the time contributes large-scale for the daily spreading of cheap offers the millions of mentally ill beings, with the simple objective to satisfy necessities and igualitria identification immediate, propitiating the appearance of emotional instability in the consumers of the mass culture. As it affirms BANTOCK, the culture propagated for the media of this time is irremediably antieducative, a time that privileges the information of the superficial one, of the fortuitous one, the ephemeral one, and encourages the dispersion of the attention, what he is total contrary to the necessities of the pertaining to school life. It is still perceived in this period, as stories of FORQUIM, an education with doctrinal trends that bring as consequence the cultural crisis where in we find dived until the present. .