Patent ID: 8020415

Claim:
A tamper-resistant container comprising: (a) a receptacle having an opening; (b) a cap for fitting over the opening of the receptacle; and (c) a combination lock integral with the cap for locking the cap to the receptacle comprising: (i) a plurality of combination wheels that protrude through the cap, each combination wheel having: a. a cylindrical outer ring with an outer surface and an inner surface, the outer surface having a plurality of circumferentially spaced combination indicia and the inner surface having a plurality of circumferentially spaced grooves; and b. an inner ring having at least one tooth extending radially outwardly therefrom and a key channel having a shaft portion and a lobe portion extending axially therethrough, said at least one tooth being radially movable between a retracted position, in which said at least one tooth does not engage a groove of the outer ring for allowing the outer ring to be rotated relative to the inner ring, and an extended position in which said at least one tooth can engage a groove of the outer ring for preventing the outer ring from being rotated relative to the inner ring; (ii) a primary catch that is movable between a locked position in which the primary catch holds the cap to the receptacle and an unlocked position in which the primary catch does not hold the cap to the receptacle; and (iii) a key shaft connected to the primary catch and extending through the shaft portions of the inner rings of said plurality of combination wheels, said plurality of combination wheels being rotatably movable about an axis of the key shaft, the key shaft having a plurality of key lobes extending therefrom wherein said plurality of key lobes can be shifted into the lobe portions of the key channels of the inner rings for moving the primary catch from the locked position to the unlocked position when each of said plurality of key lobes is aligned with a lobe portion of one of the key channels and wherein said plurality of key lobes are prevented from being shifted into the lobe portions of the key channels of the inner rings for moving the primary catch from the locked position to the unlocked position when at least one of said plurality of key lobes is not aligned with a lobe portion of one of the key channels.