Rapid fitting devices for joining pipes

Claim 1

In a fitting for joining two pipes, the fitting having a female member attached to one pipe and a male member attached to the other pipe and axially fitting into the female member, the male member having an annular depression therearound and the female member having at least one slot therein opposite said depression and opening obliquely thereinto, and the female member having a cylindrical locking bar occupying each slot and having a central portion between its ends which can enter the depression of the male member and having axially acting spring means yieldably urging the locking bar to engage in the depression of the male member, improved means for displacing the bar from the depression comprising: (a) in the female member a notch extending transversely thereinto adjacent to the oblique slot; and (b) an unlocking member supported in the female member in the notch and surrounding the male member, the unlocking member having inner edges including surfaces sloping at right angles to the oblique slot and abutting the ends of the locking bar, whereby when the unlocking member is displaced transversely inwardly of the female member the sloping surfaces will displace the locking bar into the slot away from the depression in the male member, and when the locking member is released the urging of the spring means will return the bar to the depression and move the unlocking means outwardly.