Quick detachable coupler

A quick detachable coupler comprising:

• a. a female coupling member having one end thereof in the form of a stiff, continuous ring of resilient material provided with a pair of opposed latches projecting inwardly of said ring, said ring also being provided with a pair of external pressure receiving portions disposed opposite each other across said ring in a direction transverse to the direction along which said latches are disposed, and
• b. a male coupling member having an extenal locking projection extending outward of said male coupling member a distance which is greater than the spacing between said latches in the normal condition of said ring, whereby in the coupled position said locking projection is locked behind said latches;
• c. the portions of said ring intermediate said latches and said pressure receiving portions having a flexibility to permit said ring to be sprung inwardly, along said transverse direction upon the application of pressure to said pressure receiving portions, sufficiently to move said latches outwardly to a position greater than the distance across said locking projection, whereby said male member may be separated from said female member;
• d. said latches having lead surfaces and locking surfaces, said locking surface located opposite the lead surfaces and said projection having a lead surface and a locking surface said locking surface on said projection located on the side of said projection opposite its lead surface, at least one of said locking surfaces being inclined with respect to the axial direction through said ring, said male and female coupling members, latches and projections being so constricted and arranged that when said locking surfaces of said latches are in engagement with said locking surface of said projection, said male and female coupling members are constantly urged toward each other.