Patent ID: 7721636

Claim:
A hole puncher comprising: a base having a front end; a rear end; a bottom surface; a top surface; multiple through holes defined through the base in a row; a linkage bracket attached to the front end of the base; and a handle bracket attached to the rear end of the base; multiple cutter brackets being hollow, mounted on the base and corresponding respectively to the through holes and each cutter brackets having a guide hole defined through the cutter bracket and aligned with a corresponding through hole in the base; multiple cutters corresponding respectively to the cutter brackets, slidably mounted respectively through the guide holes and each cutter having a top end; a bottom end; a blade formed on the bottom end; and a clasp mounted radially on the cutter and selectively abutting a corresponding cutter bracket; multiple springs corresponding respectively to and mounted respectively in the cutter brackets, pressing respectively against the clasps and respectively biasing the cutters up from extending completely through the cutter brackets; a linkage connecting to the linkage bracket on the base and having two links being longitudinal, arranged at an interval and connecting pivotally to the linkage bracket, and each link having a connecting end connecting pivotally to the linkage bracket; and a driven end opposite to the connecting end; an activating member connecting pivotally to and located between the links of the linkage and having a pressing member being flat and slidably abutting the top ends of the cutters; and an intermediate connecting member formed on the activating member and connecting pivotally and non-slidably to the links; and a handle connecting pivotally to the handle bracket on the base and selectively driving the driven ends of the links to pivot down and having a connection end connecting pivotally to the handle bracket; a push end being opposite to the connection end; and a driving member mounted on the handle near the connection end and connecting to and selectively driving the driven end of the links to pivot down.