摘要 |
<p>Apparatus (4) for removing a sealing plug from a bore (11) , which sealing plug comprises an outer sleeve (13) and an inner stem (14) retained within the outer sleeve, the removal taking place after a suitable hole has been drilled part of the way into the stem, which removal apparatus (4) comprises a tapered punch (15) for forcible insertion into the hole in the stem (14) thereby to create an interference fit between the punch (15) and the stem (14) and thereafter driving the stem (14) out of the sleeve (13) whilst also retaining the stem (14) on the punch (15) by virtue of the interference fit, and sleeve-engaging means (16) engagable with the sleeve (13) after the punch (15) has removed the stem (14) from the sleeve (13) , the sleeve-engaging means (16) and the punch (15) being thereafter removable from the bore thereby to remove both the sleeve (13) and the stem (14) from the bore whilst the sleeve (13) and the stem (14) are both retained on the appropriate parts of the apparatus.</p> |