Air brake hose coupling member

An interlocking hose coupling having at least first and second rotatably engaging bodies which couple respectively associated hoses, said coupling being disengageable when sufficient separating forces are exerted axially along said hoses, said coupling comprising a first stop means disposed on said first body arranged to contact said second body and to thereby impede rotation of said second body with respect to said first body when said second body is rotated in a first direction so that said bodies do not become inadvertently separated by rotational movement in said first direction;

• and a second releasable stop means permanently secured to at least one of said bodies and movable to a position for contacting the other body and thereby impeding rotation of said second body with respect to said first body when said second body is rotated in a second direction so that said bodies do not become inadvertently separated by rotational movement in said second direction;
• wherein said first and second stop means limit rotational movement in said first and second directions to a predetermined rotational arc when said bodies are rotatably engaged, and said second releasable stop means controllably permits the rotational disengagement of said second body from said first body when actuated, with neither of said first and second stop means impeding separation of said first and second bodies by separating forces exerted axially along said hoses;
• and wherein said second stop means includes a finger pivotally mounted on said one body having a bent end which traps a portion of the other of said bodies therein upon rotation of said bodies in the second direction;
• and retention means for retaining the finger in the unlocked position.

An improved air brake hose coupling member having a generally tubular body with a neck at one end adapted to be connected to an air hose, and with arcuate locking lug means projecting outwardly from the other end of the body;

• the tubular body having an outer curved end portion spaced inwardly of and generally concentrically curved with respect to said arcuate locking lug means, and having L-shaped flange means formed on the body, said locking lug means and L-shaped flange means adapted to engage L-shaped flange means and locking lug means, respectively, of another coupling member similar to said coupling member, to couple said members together when the members are placed in abutting relationship and rotated oppositely with respect to each other;
• the improvement including a radially extending slot formed in the curved end portion of the tubular body;
• a rigid finger having an angled end and an opposite pivot end, said finger ends being planar straight sections with the angled end section forming an included angle with the pivot end section of approximately 45.degree.;
• pin means for pivotally mounting the finger on the body within the slot for movement of the angled end in a generally radial direction with respect to the tubular body between locked and unlocked positions;
• and said angled end section being adapted to extend generally along an outer edge of the L-shaped flange means of a coupled coupling member to trap a corner of said L-shaped flange means between said angled end section and the curved end portion of the tubular body.