| 摘要 |
<p>The present jig saw blade is constructed for heavy duty work, such as cutting through concrete or masonry. For this purpose, the blade is provided with a cooling channel extending longitudinally through the length of the blade and branch channels extend laterally through the body of the blade from a narrow side thereof and into the longitudinal channel. The lower end of the longitudinal channel is closed and the upper end is arranged for connection to a cooling fluid supply.</p> |
