Patent ID: 6981626

Claim:
A stapler comprising: a main base; a pivotal base pivotally attached to the main base with a first pivot; a recoiling device mounted between the main base and the pivotal base to push the pivotal base to an original position; a stapling device attached to the pivotal base and comprising a connecting bracket attached to the pivotal base, a staple magazine pivotally attached to the connecting bracket to receive multiple staples inside the staple magazine; a handle assembly connected to the staple magazine; and a driving tab connected to the handle assembly and extending into the staple magazine; a connecting device mounted between the main base and the connecting bracket to rotate the pivotal base downward when the handle assembly is pressed; a leg-cutting device mounted between the main base and the pivotal base and comprising an upper base securely attached to the pivotal base and having at least one through hole; two arm holders securely attached to the pivotal base and extending toward the main base; two pushing arms pivotally connected to the arm holders respectively and each pushing arm having a sliding end and a pushing end; a lower base securely attached to the main base, corresponding to the upper base and having an arm-lifting top surface, wherein the sliding ends of the pushing arms are slidably attached to the arm-lifting top surface of the lower base to make the pushing arms to move upward when the pivotal base with the arm holders moves downward; a cutting pad attached to the upper base, corresponding to the driving tab and having a bottom and a protrusion extending from the bottom to form a first cutting edge at the bottom and a second cutting edge at the protrusion; two cutting blocks attached respectively to the pushing ends of the pushing arms and aligning with the at least one through hole in the upper base, two guiding blocks slidably mounted on the pivotal base and driven by the cutting blocks to move in a lateral direction while the cutting blocks moves, and each guiding block having a curved guiding top surface formed on the guiding block at one end facing to the other guiding block; and two biasing members mounted in the pivotal base and abutting respectively against the guiding blocks to provide the guiding blocks resilient forces.