Abstract: A combination lock device includes a mechanical combination lock, a positioning plate, an extension shaft, a securing seat and an eccentric shaft. The combination lock consists of a housing, a lock shaft, a lock piece and a lock seat. When the number dials of the combination lock are turned to a set number, a lock hook of the combination lock disengages from a retain slot of the positioning plate. The combination lock may then be turned counter-clockwisely through 180 degrees so that the extension shaft and the eccentric shaft synchronously turn counter-clockwisely through 180 degrees, causing an eccentric rod linked up with a switch device in the drawer to displace through 180 degrees to allow opening of the drawer. In order to close the drawer, the procedure is reversed so that, after the combination lock and the positioning plate are positioned, the lock hook engages the retain hole by the turning of any one of the number dials.

Abstract: A combination lock device with latch bolt includes a combination lock, a rotary rod means, a faceplate, a securing seat, a turning means, a slide piece, a latch bolt and a housing. In order to unlock the combination lock, number dials are turned to a preset code number so that a lock hook disengages from a retain slot of the faceplate. The user may then turn the combination lock counter-clockwisely to cause the turning means to turn therewith, so that a connecting piece at a bottom side of the rotary rod means also rotate, causing a notch of the connecting piece to push a post of a turning piece to displace through 90 degrees. A slide piece is caused to displace forwardly as a result of the post pushing a slide slot, so that a movable pin on two U-shaped indentations of the slide piece displaces upwardly and then downwardly by means of a spring, causing the latch bolt to retract into the housing. Locking may be achieved by reverse operation.

Abstract: A FC-type optical fiber cable connector's adaptor, which includes a front casing, which has an externally threaded tubular outer coupling flange and a tubular inner coupling flange concentrically disposed around a center hole thereof for coupling the ferrule of a first optical fiber cable connector, and a back hole in line with the circular center hole thereof, a rear casing, which has an externally threaded tubular outer coupling flange and a tubular inner coupling flange concentrically disposed around a center hole thereof for coupling the ferrule of a second optical fiber cable connector, and a front stub mounting tube fitted into the back hole on the front casing, and a split sleeve inserted into the circular center holes on the front and rear casings and having two opposite ends respectively stopped against an inside annular flange within the circular center hole on either casing.