Quick-release fitting for securing equipment to a track of T-shaped internal channel section for aircraft

A quick-release fitting for securing equipment to a track of T-shaped internal channel section, in an aircraft, said internal channel section having upper inner surfaces which slope outwardly and downwardly, comprising:

• a first member adapted to be secured to the equipment, said first member having an arcuate slot in a wall of said first member;
• said first member having mounted thereon, for rotation about an axis, a second member having an end portion, of complementary T-shape, for engagement in the track, said T-shaped end portion having laterally extending arms having upper surfaces which slope outwardly and downwardly, said axis extending along the stem of the "T" whereby the second member, in a first position thereof in which the arms of the "T" extend in the longitudinal direction of the track can be inserted in the track and the second member can be thereafter be turned through 90.degree. about said axis into a second position to lodge the arms of the "T" shaped second member into the regions of the interior of the channel section track providing arms of such cross-section, whereby a camming action is produced to clamp the fitting firmly in said channel of said track as said second member is rotated to said second position;
• and
• an operating lever extending radially from said second member, through said arcuate slot in a wall of said first member, whereby the second member can be moved manually between its first position and its second position said operating lever being operable manually to retain said second member in said second position thereof.