Control cylinder for pneumatic control devices with signal switches

A connecting mechanism particularly adapted for utilization in a fluidic control system comprising a control cylinder and a switch housing, said connecting mechanism including a dovetail connection between said control cylinder and said switch housing, said dovetail connection being defined by a male dovetail of one of said control cylinder and switch housing seated in a female dovetail-shaped channel of the other of said control cylinder and switch housing, said male dovetail being defined by a neck and a foot disposed generally transverse to said neck, said female dovetail-shaped channel being defined by a neck channel portion and a foot channel portion disposed generally transverse to said neck channel portion, said neck channel porting having a transverse dimension which is less than a maximum transverse dimension of said dovetail-shaped channel, said neck being joined to said foot at first and second transversely spaced radius portions, said foot having transversely opposite first and second nose portions, said first nose portion and said second radius portion being generally diagonally opposite each other and defining a first diagonal distance therebetween, said second nose portion and said first radius portion being generally diagonally opposite each other and defining a second diagonal distance therebetween, and said neck channel portion transverse dimension is less than one of said diagonal distances and is more than the other of said diagonal distances.