Hose quick coupling apparatus

A quick-disconnect cam locking safety coupling comprising:

• a hollow male plug having an external peripheral groove;
• a hollow socket receiving said male plug and having a pair of opposed side openings opposite said peripheral groove;
• mounting ears attached to the socket and positioned on each side of the side opening;
• a gasket for sealing between the male plug and the socket;
• a pair of cam members each having a lever lying adjacent the socket and a cam portion passing through one of said side openings and engaging said peripheral groove to thereby attach the plug within the socket;
• shaft means pivotally connecting said cam members to said ears of the socket for outward movement of the levers away from the socket to disengage the cam portions from the said peripheral groove and thereby release the plug from the socket;
• means forming a latch receiving bore within said cam member, the bore communicates with said shaft;
• a detent formed in said shaft in aligned relationship respective to the bore when said levers are pivoted towards the socket to engage the cam portions with the peripheral groove;
• said shaft is non-rotatably supported by said ears, said cam member pivots about the fixed shaft;
• a piston reciprocatingly received within the bore, means biasing said piston towards the shaft axis so that part of the piston releasably engages the detent when the lever is pivoted towards the socket.

In a quick-disconnect cam locking safety coupling of the type that includes a hollow male plug having an external peripheral groove;

• a socket receiving said male plug and having a pair of opposed side openings positioned opposite said peripheral groove;
• a gasket means for sealing between the male plug and the socket;
• mounting ears extending from said socket on opposed sides of said side opening;
• a pair of cam members each having a lever, and a cam portion passing through one of said side openings and engaging said peripheral groove, and each including a nonrotable fixed shaft means supported from the mounting ears of said socket by which each said cam member is pivotally connected to the socket for outward movement of the levers away from the socket to disengage the cam portions from said peripheral groove;
• the improvement comprising:
• latching means for releasably locking each cam member in the groove engaging position, including a detent formed in a medial part of the shaft, a bore formed in the cam member and having an opening aligned with the detent when the lever is positioned against the socket;
• a piston reciprocatingly received within the bore, means biasing said piston into the detent, whereby;
• movement of the lever away from the socket forces the piston from the detent, while movement of the lever towards the socket positions the piston within the detent and releasably latches the cam member in the made-up configuration.