| 摘要 |
<p>Dowel pin suitable for easy driving into members to be pinned together. There is a longitudinal bore (22) in the pin and there are external flanges (21) and internal projections (23) of helical form. The specification teaches how lengths of such dowel can be used as a writing implement, as a projectile, as a heat exchanger, in a lamp in a paint-sprayer, in a simple jet-engine, as a drilling tool, as a structural component, or as a decorative device.</p> |
