Fluid controlled pipe connectors

A connector comprising a tubular pin member, a tubular box member telescopically disposed over said pin member, lock means shiftable laterally of said box member and pin member for securing said members to each other, fluid operated shifting means for shifting said lock means laterally of said pin member and box member;

• and means shiftable lengthwise of said box member and pin member and engageable with said fluid operated shifting means to retain said lock means in position securing said members to each other.

A connector as defined in claimed 1;

• said fluid operated shifting means being constructed and arranged to shift said lock member in one direction laterally of said pin member and box member to secure said members to each other and in another direction laterally of said pin member and box member to release said members from each other, said fluid operated retaining means being shiftable lengthwise of said box member and pin member and engageable with said fluid operated shifting means to retain said lock means in position securing said members to each other.

A connector comprising a tubular pin member, a tubular box member telescopically disposed over said pin member, lock means shiftable laterally of said box member and pin member for securing said members to each other, fluid operated shifting means for shifting said lock means laterally of said pin member and box member;

• said fluid operated shifting means being carried by said box member and being constructed and arranged to shift said lock means in one direction laterally of said pin member and box member to secure said members to each other and in the other direction laterally of said pin member and box member to release said members from each other, said lock means being carried by said box member and being shiftable laterally toward said pin member to secure said members to each other, and separate fluid operated retaining means carried by said box member and acting on said fluid operated shifting means to retain said lock means in position securing said members to each other.

A connector comprising a tubular pin member, a tubular box member disposed over said pin member, lock means for securing said members to each other, said lock means including one or more dogs on said box member shiftable laterally of said box member and pin member, first cylinder means carried by said box member, first piston means shiftable in said first cylinder means and engageable with said one or more dogs to shift said one or more dogs laterally of said box member and pin member, and first conducting means for conducting fluid under pressure into said first cylinder means to actuate said first piston means, second cylinder means carried by said box member, second piston means shiftable in said second cylinder means and engaging said first piston means to retain said one or more dogs laterally inwardly of said box member, and second conducting means for conducting fluid under pressure into said second cylinder means to actuate said second piston means.

A connector comprising a tubular pin member, a tubular box member telescopically disposed over said pin member, lock means shiftable laterally of said box member and pin member for securing said members to each other, means for shifting said lock means laterally of said pin member and box member, and retaining means movable lengthwise of said box member and pin member and engageable with said shifting means for retaining said lock means in position securing said members to each other.