Abstract: A filter cage for impeding access to a cable filter within an enclosure having an enclosure wall and a plurality of bosses extending outwardly therefrom and containing a cable filter and associated cables, the filter cage including a cage wall, a pair of side walls and a pair of end walls depending from the cage wall, cutouts in the end walls for receiving the cables, apertures in the cage wall for receiving screws for fastening the filter cage to the bosses, openings in the cage wall for permitting viewing of the filter within the cage, the end walls and side walls being spaced so as to abut the bosses on the enclosure wall to thereby locate the apertures in the cage wall in proper alignment with the bosses for receiving screws which pass through the apertures and into the bosses.

Abstract: A lock structure for use on an enclosure having first and second sections which are assembled and disassembled by a relative rectilinear telescopic sliding engagement including a first channel having a first web and a first pair of legs secured to the first section, a latch pivotally mounted on the first channel and being biased by a spring to a locking position, a second channel having a second web and a second pair of legs secured to the second section so that the first pair of legs fit between the second pair of legs when the first and second sections are being moved into assembled relationship, and an end on one of the second legs for functioning as a keeper for the latch when the first and second sections are in fully assembled relationship.

Abstract: A lock structure for mounting between first and second supporting surfaces including a cup mounted on the first surface, a housing mounted on the cup, a rocker arm located within the housing and pivotally mounted on the cup, a keeper mounted on the second supporting surface, interengaging surfaces between the rocker arm and the keeper for effecting a locking relationship therebetween, a spring located between the housing and the rocker arm to bias the rocker arm in a locking position relative to the keeper, and an actuator shaft keyed to the rocker arm and rotatably mounted in the housing and having a curvilinear groove therein for receiving a mating key for pivoting the actuator shaft and the rocker arm keyed thereto out of locking engagement with the keeper.