Coupling for hose and method of manufacturing the same

A coupling for coupling hoses or a hose and another device, comprising:

• a pair of coupling main bodies;
• a pair of sealing members formed on the front end surfaces of the respective coupling main bodies for axial abutment;
• and
• a plurality of engaging projections arranged on the front end of each of the coupling main bodies and axially projecting and engaging recesses, each being defined by adjacent two engaging projections;
• said engaging projections and said engaging recesses of the coupling main bodies being so designed as to be axially and complementarily engaged with the corresponding engaging recesses and the engaging projections of the other coupling main bodies;
• each of said engaging projections of the coupling main bodies being provided with a hooked anchor section for peripheral engagement with the corresponding one of said engaging projections of the other coupling coupling main bodies to restrict axial movement of said engaging projections, thereby axially holding the coupling main bodies together;
• said engaging projections and said engaging recesses of the coupling main bodies are so designed as to be axially and complementarily engaged with the corresponding engaging recesses and the engaging projections of the other coupling main body and peripherally rotatable relative to each other to a predetermined extent;
• said engaging projections, each having first and second opposing lateral sides, said first lateral sides provided with respective hooked anchor sections designed to be peripherally engaged with the corresponding hooked anchor sections of the other coupling main body to restrict axial movement of said engaging projections relative to each other, thereby axially holding the coupling main bodies together;
• and
• said engaging projections are provided on said second lateral sides thereof with respective urging mechanisms for resiliently urging the second lateral sides of the engaging projections of the other coupling main bodies to separate the respective second lateral sides to maintain mating engagement of said hook anchor sections.