Quick connect pipe coupling

A pipe coupling comprising:

• a pin element having a longitudinal axis and an outer curvilinear axially extending surface integrally connected to a shoulder, the outer surface having at least three axially extending columns of first fins extending radially outwardly on the curvilinear surface, and said pin having a circumferential forward face, said face having formed thereon a first locking means comprising a first endless saw:
• tooth pattern;
• said at least three axially extending columns of first fins being circumferentially spaced apart with a non-tinned space between said columns, each column having at least one fin having an engaging surface, and pitched at an angle .theta. defined by the angle formed as a result of the intersection of a line perpendicular to the longitudinal axis of the coupling and the longitudinal axis of the fins;
• a socket element having a cup-shaped inner curvilinear surface member with a base, said cup-shaped inner curvilinear surface being of a diameter to fit over the outer surface and the fins of the first element;
• said socket base having formed thereon a circumferentially forward facing rim supporting second locking means formed thereon comprising a second endless saw tooth pattern, said second saw tooth pattern being oppositely angled with respect to said first saw tooth pattern;
• said second fins;
• being positioned in at least two axially extending columns which are circumferentially spaced apart in a manner similar to said first fins, with a non-tinned space between columns, each column having at least one fin;
• at least some of said second fins having an engaging surface, said fins pitched at an angle .theta. with respect to said longitudinal axis;
• said first and second fins being positioned so that the outer surface of the pin element may be axially inserted into the cup-shaped surface of the socket element and then rotated so that the engaging surfaces of the first fins engage the engaging surfaces of the second fins and the first locking means of the pin engage the second locking means of the socket so as to maintain said pin element with said socket element in an engaged relationship that cannot be unengaged without destroying the coupling.