| 摘要 |
An extension bar for use between a portable driving tool and a driven element includes an elongated body with an integrally formed first end adapted to receive the driving element and an integrally formed second end adapted to engage the driven element, the elongated body having a hollow interior which contains a battery. An illumination control is selectively operable to electrically connect the battery and a light source to illuminate an area surrounding the second end. A transverse passageway extends through the elongated body and has an elongated switch element slidably disposed therein. A pair of insulator rings, disposed one on each end of the switch element, are operable when the switch element is in a first disposition to open the electrical connection between the battery and the light source and are operable when the switch element is in a second disposition to complete the electrical circuit between the battery and the light source. A spring biased detent is centrally disposed in the elongated body and operable to slidably engage said flat face, on which a pair of detent receiving recesses are formed in a longitudinal, spaced apart relationship, to normally hold the switch element in a predetermined one of said first and second dispositions.
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