Patent ID: 8492668

Claim:
Emergency switch, comprising a body receiving a mobile member, the member being movable in translation, under the action of an axial thrust on a mushroom-like head integral with said mobile member, the member passing from an extended position into a retracted position, each position being indexed through at least one blocking means cooperating with at least one indexing notch in an extended position and with at least one indexing notch in a retracted position, where said indexing notch in retracted position is shaped so as to permit said blocking means to be released from said notch through a rotary motion of said blocking means with respect to said indexing notch, as well as in an axial pulling motion of said mobile member with respect to said body, where said indexing notches are provided for on a periphery of said mobile member, and where the motion of unblocking, through pulling or through rotation, is conducted through guiding means comprising two parts cooperating with each other in sliding; and internally and firmly integral, a concentric bushing in which said mobile member can axially move, the bushing including a portion of said guiding means, while the other portion of the guide means is integral with said mobile member, one of said portions consisting of a spigot, while the other one consists of a groove in which said spigot is guided; said wherein said blocking means is in the form of at least one piece of material flexibly and elastically attached, through a blade, to the rest of the bushing, internally to the latter, or to said mobile member externally to the latter, so as to provide said piece of material with a mobility in the radial direction, so that it can cooperate with an indexing notch said mobile member comprises, externally to the latter, or said bushing, internally to the latter.