Abstract: An effort-saving paper punch includes a lever pivot in position in relation to the lever, a lever pivot slot which receives the lever pivot in a way which enables the lever pivot to move towards the punching end in the resting position and away from the punching end in the punching position, and a longitudinal contact member which is fixedly disposed underneath the lever at a position corresponding to the punching members so that a first end of the longitudinal contact member which is farther away from the punching end abuts against the punching members in the resting position, and a second end of the longitudinal contact member which is nearer to the punching end abuts against the punching members in the punching position.

Abstract: A safety structure for rotary paper trimmer comprises a carriage, a cartridge, a blade holder, a locking means, an unlocking means, a biasing means and an actuating means. The blade holder is received inside the cartridge for holding a cutting blade and slides downward to expose a cutting edge of the cutting blade outside the cartridge during cutting operation. By means of the cooperation among the locking means, the unlocking means, the biasing means and the actuating means, the cutting edge is ensured to be concealed completely inside the cartridge when the cartridge is removed from the carriage and when the carriage cover is not pressed by the user, therefore preventing the cutting edge from injuring the user when the rotary paper trimmer is not in use.

Abstract: The present invention relates to a kind of flat-clinch stapler comprising a staple pressing device, a staple magazine device, a base and a staple flat-clinching device whereas the staple flat-clinching device comprises a movable platform a movable platform supporting block, a movable platform position fixing block and a spring; and also comprising a push arm whereas the push arm comprises an upper fulcrum, a middle fulcrum, a blocking part, and a lower push arm.

Abstract: A hand-operated stapler comprises an arm, a sliding belt and a blocking member, wherein the arm comprises a front end which acts as an effort, a rear end which acts as a fulcrum, and a load portion in between the front end and the rear end of the arm; and the rear end of the blocking member is connected to a front end of the sliding belt. At a non-stapling default position a front end of the blocking member is biased to be disposed above the stopper and blocks the upper clincher member from engaging with the lower clincher member. At a stapling position the rear end of the sliding belt is pulled upward, thereby pulling the blocking member rearward and away from the stopper and thus allowing the upper clincher member to engage with the lower clincher member.

Abstract: A hand-operated stapler comprises an arm, a sliding belt and a blocking member, wherein the arm comprises a front end which acts as an effort, a rear end which acts as a fulcrum, and a load portion in between the front end and the rear end of the arm; and the rear end of the blocking member is connected to a front end of the sliding belt. At a non-stapling default position a front end of the blocking member is biased to be disposed above the stopper and blocks the upper clincher member from engaging with the lower clincher member. At a stapling position the rear end of the sliding belt is pulled upward, thereby pulling the blocking member rearward and away from the stopper and thus allowing the upper clincher member to engage with the lower clincher member.