Patent ID: 8397364

Claim:
An apparatus for releasably coupling first and second components, comprising: a) the first component having a first wall with a first opening in the first wall, the first wall having a third opening intersecting the first opening and having a square edge at the intersection with the first opening, the square edge having a diameter; b) the second component having a second wall with a second opening in the second wall, the second wall having a fourth opening, the first and second openings being aligned with each other and the third and fourth openings being aligned with each other; c) a primary pin sized to fit within the first and second openings, the primary pin having a recess that is aligned with the third opening and adjacent to the square edge, the diameter of the square edge being less than the diameter of the recess; d) a locking pin sized to fit within the third and fourth openings and the recess, the locking pin having a groove with an o-ring in the groove, the o-ring having an inside diameter that is less than the diameter of the square edge and an outside diameter that is greater than the diameter of the square edge, wherein when the primary pin is inserted into the first and second openings and the locking pin is inserted into the third and fourth openings and the recess, with the o-ring in the recess, the first and second components are coupled together.