Coupling systems

A coupling device for releasably securing a first item to a second item, the coupling device comprising a base member connectable to the first item, and a release member connectable to the second item, the base member and the release member being releasably connectable together in a lockable coupled position;

• the base member having a front face including a contact portion for contacting a contact face of the release member in the coupled position;
• the release member comprising a body, at least a portion of the body being configured to be received in a pocket on the front face of the base member when the base member and the release member are in the coupled position, the pocket having an open access end through which the release member can be slidingly inserted and removed;
• a stop member positioned substantially centrally of the contact portion, the stop member moveable, by an actuator, between a lock position in which the stop member interengages with the release member to prevent removal of the release member from the pocket of the base member, and a release position in which the release member can be separated from the base member.

A coupling device comprising a base member releasably connectable to a release member in a lockable coupled position, the base member comprising:

• a front face having a shoulder extending around a portion of the front face to define a pocket with an open access end for receiving the release member through the open access end, the shoulder being configured to delimit movement of the release member orthogonally to the front face;
• a stop member moveable, by an actuator on the base member, between a lock position and a release position, wherein, in use when the release member is received in the pocket, in the lock position the stop member can engage with the release member to prevent removal of the release member through the open access end, and in the release position the release member can slide out of the open access end, and wherein the release member is configured to rotate relative to the base member in the coupled position with the stop member as a rotation point.