Patent ID: 7559447
Filing Date: 2009-07-14
Classification: B25C

Abstract:
1. A nail-driving device adapted for use with a nail and a workpiece formed with a nail hole therethrough, said nail-driving device comprising: a housing having a stop portion; a trigger unit disposed on said housing; a safety unit including a first safety member having a workpiece-engaging end adapted to press against a workpiece, and a second safety member spaced apart from said stop portion and having a trigger-engaging portion, said trigger-engaging portion of said second safety member being movable to contact said trigger unit so that said trigger unit is operable to fire the nail; and a resilient member disposed between said first and second safety members for biasing said first and second safety members to move away from each other along a longitudinal direction; wherein, when said workpiece-engaging end of said first safety member is pressed against the workpiece such that the nail is moved into the nail hole in the workpiece, said first safety member pushes and moves said resilient member and said second safety member toward said trigger unit along said longitudinal direction until said trigger-engaging portion of said second safety member comes into contact with said trigger unit, such that said stop portion can prevent further movement of said second safety member along said longitudinal direction while allowing for movement of said first safety member moves toward said second safety member against the biasing action of said resilient member.