Patent ID: 7607254

Claim:
A mouse trap having a triggering plate comprising: a stationary base having a circular bottom wall which is in a substantially horizontal plane, a central shaft, a central bait housing, a first stopper, a first opening, a fixed outer wall, a first receiving portion, and a pair of pivoting seats extending upward from the circular bottom wall; said central bait housing being secured on a middle part of said circular bottom wall, said central shaft extending upwardly through said central bait housing, said fixed outer wall being disposed on an outer edge of said circular bottom wall; a rotatable cover having a circular cover, a central shaft hole, a second stopper, a second opening, a rotatable outer wall, a locking portion and a torque generator; said rotatable cover rotating relative to said central shaft and said stationary base; said torque generator being provided to create a torque forcing said rotatable cover to tend to rotate from an open position to a closed position; a triggering plate having a pair of pivoting protrusions, a front plate portion, and a rear plate portion, said pivoting protrusions being pivoted within said pivoting seats formed on the circular bottom wall; said pivoting protrusions forming an invisible pivoting axis for triggering the plate; said triggering plate being in a substantially horizontal plane above the circular bottom wall; and said rear plate portion being longer than said front plate portion; a connecting rod assembly having a linking portion and an activating portion; said linking portion having two ends, one end of said two ends of said linking portion connecting to said front plate portion, the other end of said two ends of said linking portion connecting to said activating portion; a relationship between said activating portion and said locking portion being selected from engagement or separation; when said rear plate portion is pressed by a predetermined weight, said rear plate portion displaces downwardly and said front plate portion displaces upwardly simultaneously, so as to lift up said linking portion and then said activating portion and said locking portion become separated so that said rotatable cover can rotate from said open position to said closed position for avoiding a caught object blocked by said second stopper from escaping.