Patent attributes
A supporting device includes: a first part that is formed with upper and lower retaining grooves; a second part that is formed with an upper hook extending into the upper retaining groove in such a manner that the second part is pivotable relative to the first part between first and second positions, the second part being further formed with a lower hook that is disposed in the lower retaining groove when the second part is disposed at the first position, and that is disposed outwardly of the lower retaining groove when the second part is disposed at the second position; and a locking member mounted movably in the lower retaining groove and engageable releasably with the lower hook when the lower hook is disposed in the lower retaining groove.
