Patent ID: 7959391

Claim:
A dry wall hand tool for being manually affixed on a dry wall, comprising: a pusher handle adapted for being stably and tightly grabbed and held thereat, wherein said pusher handle has a biasing surface, wherein said pusher handle has at least an indented slot is indentedly formed at said biasing surface of said pusher handle to form at least one edge notch at said peripheral edge of said pusher handle; a penetrating pin extended from said pusher handle, wherein said penetrating pin comprises an elongated pin body having a tail end portion protruding out from said biasing surface of said pusher handle and a sharp penetrating tip extended from said tail end portion and arranged for initially penetrating into said dry wall to form a hole thereat in a tool-less manner when a rotational pushing hand force is applied at said pusher handle so as to penetrate said pin body into said dry wall until said biasing surface of said pusher handle biases against said dry wall, wherein said penetrating pin further comprises a sharp edge integrally and spirally extended from said tail end portion of pin body towards said sharp penetrating tip at an outer surface of said pin body to assist said penetrating pin being rotatably penetrate into said dry wall; and a locking arrangement which comprises a retention pin slidably extended from said pusher handle at a position that said retention pin is spaced apart from said penetrating pin, wherein said retention pin is arranged for penetrating into said dry wall after said penetrating pin penetrated into said dry wall, such that said pusher handle is securely locked up by said retention pin to prevent said pusher handle being rotated to remove said penetrating pin from said dry wall, wherein said locking arrangement has a positioning hole provided at said pusher handle to guide said retention pin slidably penetrating into said dry wall through said positioning hole, wherein said retention pin, having a sharp tip portion at one end and an enlarged pushing head at an opposed end, is detachably coupled with said pusher handle through said positioning hole to lock up said pusher handle at said dry wall in a rotatably movable manner, wherein said locking arrangement further comprises a locking member having an accommodating portion for being placed at said biasing surface of said pusher handle and a protruding portion extending out of a peripheral edge of said pusher handle member and defining said positioning hole at said protruding portion of said locking member, such that after said penetrating pin is rotatably penetrated into said dry wall, said retention pin is guided for penetrating into said dry wall through said positioning hole so as to lock up said pusher handle, wherein said accommodating portion of said locking member is fittingly received at said indented slot of said pusher handle at a position that said protruding portion of said locking member is extended out of said peripheral edge of said pusher handle through said edge notch.