1. Electric control switch with a push-button comprising a case housing:
at least one electric contact having at least a first and a second electric state,
an operating push-button comprising:
a first operating means designed to move due to the action of the external operating force,
a second operating means moving due to the action of an internal operating force to move said at least one electric contact from a first electric state to a second electric state,
disconnection means between the first operating means and said at least one electric contact,
wherein the disconnection means comprise means for moving said at least one electric contact from the first electric state to the second electric state and vice-versa at a speed the maximum value whereof is predetermined,
the speed of movement of the electric contact or contacts from the first to the second electric state is independent from the speed of the first operating means when the speed of said first means is greater than a first predetermined maximum speed, and
the speed of movement of the electric contact or contacts from the second to the first electric state is independent from the speed of the first operating means when the speed of said first means is greater than a second predetermined maximum speed.
2. Control switch according to claim 1 wherein the disconnection means comprise at least one flexible operating means supplying the internal operating force fixing the first predetermined maximum speed.
3. Control switch according to claim 1 comprising a retractable stop releasing movement of the second operating means due to the action of the internal operating force when the first operating means move due to the action of the external operating force.
4. Control switch according to claim 1 wherein the disconnection means comprise a flexible internal operating means generating a holding force fixing the second speed predetermined maximum speed.
5. Control switch according to claim 4 wherein the holding force opposes the internal operating force and is of lower intensity.
6. Control switch according to claim 1 comprising at least one flexible return means applying a return force on the operating push-button, the return force being designed to oppose the operating force.
7. Control switch according to claim 6 wherein the return force opposes the internal operating force and is of higher intensity.
8. Control switch according to claim 1 wherein the second operating means move in translation in a parallel direction to that of the movement of the first operating means.
9. Control switch according to claim 8 wherein the first operating means comprise an external piston and the second operating means comprise an internal piston, said internal and external pistons comprising coaxial longitudinal axes.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. Perfluorodiacylperoxides having the following structures:
wherein:
Rf is \u2014CF3, Rf\u2032 and Rf\u2033 are C1\u2013C3 linear or branched perfluorooxyalkyl groups;
wherein:
Rv is selected from F, perfluorooxyalkyl, C1\u2013C3 linear or branched perfluoroalkyl;
X1, X2 are selected from F, perfluoroalkyl, C1\u2013C3 linear or branched perfluorooxyalkyl;
wherein:
n=1\u20133
X3 is selected from F, C1\u2013C3 linear or branched perfluoroalkyl, with the proviso that for n=3, X3 cannot be F; said perfluorodiacylperoxides meet the following condition: the thermal decomposition constants Kd(sec\u22121) in the presence of water do not undergo substantial variations with respect to the thermal decomposition constants in absence of water.