Patent ID: 7287452
Filing Date: 2007-10-30
Classification: B25B

Abstract:
1. A screw fastener assembly adapted for use with an object, the object having a surface formed with a threaded hole, said screw fastener assembly comprising: a screw fastener having a shank portion that has a connecting end and a free end which are opposite to each other, and a head portion connected to said connecting end of said shank portion, said head portion having an engaging side formed with an engaging groove; and a resilient sleeve having opposite first and second ends, said sleeve being sleeved on said head portion of said screw fastener in a close-fitting manner such that said free end of said shank portion of said screw fastener extends outwardly of said first end of said sleeve, said sleeve having a uniform thickness; said sleeve being adapted to permit extension of a bit of a screw driver thereinto via said second end and being adapted to be sleeved on the screw driver in a close-fitting manner, said engaging groove in said engaging side of said head portion of said screw fastener being adapted to engage the bit of the screw driver such that the screw driver is capable of moving and rotating an assembly of said screw fastener and said sleeve until said first end of said sleeve comes into contact with the surface of the object so as to allow movement of said screw fastener relative to said sleeve and the threaded hole in the object; wherein said second end of said sleeve is frustoconical, converges toward said first end of said sleeve, and is adapted for guiding insertion of the screw driver into said sleeve.