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US 6,280,047 B1Granted
Screwdriver
OwnerKun Chen Cheninventor
Life of this patent
Estimating the term…
Abstract
One side of this screwdriver is cylindrical, its inner diameter's circumference face is the positioning section, and the other side of it is rod body, the end of this rod body is the extractor that is equipped with the bit. Furthermore, the gripping rod is composed of a central hollow main body whose two ends are threaded with the forward cover and the tail cover respectively. Forward cover is located at one side of the extractor; it contains a lighting source component, which is consisted of a light bulb and a touch control switch, for achieving the purpose of convenient replacement and providing illumination, etc.
Claims3
A screwdriver comprising:
- (a) an extractor including a female joint cover having a first hollow cylindrical end and a second end, the first hollow cylindrical end having an inner toothed circumferential positioning section disposed therein, the second end having a rod body extending therefrom and terminating in a bit;
- and
- (b) a gripping rod including a tubular main body having a first end and a second end, the first end being of reduced diameter and having an outer toothed circumferential inserting section engageable with the inner toothed circumferential positioning section for transmitting torque to the bit.
Dependencies are inferred from the claim text.