Patent ID: 8919541

Claim:
In a belt conveyor apparatus including a conveyor frame including a belt support, a belt, a belt drive, and a containment side member on each side of the conveyor releasably attached to the conveyor frame, an improvement comprising: longitudinally spaced-apart first and second slots on the conveyor frame, the first and second slots including slot bottoms spaced apart a first distance and slot entrances spaced apart a second distance, with one of the slot entrances defining a distance to the other slot's bottom that is equal to the first distance; and longitudinally spaced-apart first and second studs on the containment side member that closely engage the slots, respectively, and that are spaced apart the first distance so that they can be fully seated and engaged in the first and second slots, but so that the first and second studs will wedgingly bind and thus cannot be simultaneously pulled out of the first and second slots when the containment side member is biased toward a release direction.