| 摘要 |
A releasably anchorable bushing conduit apparatus (10) for providing mess through a wall (64) having a generally accessible side (60) and a generally inaccessible side (58) and an opening extending through the wall (64) from the generally accessible side (60) to the generally inaccessible side (58) comprises a bushing conduit (12) having first and second opposite end portions (20, 22) with first and second coterminous openings (26, 28) therein. The bushing conduit (12) is insertable into the opening such that the first end portion (20) protrudes from the wall (62) on the inaccessible side (58) and the second end portion (22) protrudes from the wall (62) on the accessible side (60). A retaining device (14, 16, 44) external to the first and second coterminous openings (26, 28) retains the bushing conduit (12) in place, yet presents no obstruction to the first and second coterminous openings (26, 28). The retaining device (14, 16, 44) includes an expandable and collapsible member (44) secured to the first end portion (20) and capable of expanding to interfere with the inaccessible side (58) to prevent the first end portion (20) from being withdrawn from the opening from the accessible side (22). The expandable and collapsible member (44) is also capable of being collapsed to prevent interference of the member (44) with the inaccessible side (58) to permit the first end portion (20) to be withdrawn from the opening (64). A device (66) is provided on the bushing conduit (12) for squeezing the wall between the expandable member (44) and the second end portion (22) to hold the bushing conduit (12) securely in the wall opening (64).
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