| 摘要 |
This invention is a hollow plastic burial vault comprising a base and a cover moulded as an integral unit and having a peripheral flange extending about the v ault. The flange includes a first sealing surface portion, a first joint portion, a se cond sealing surface portion, and a second joint portion. The first sealing portion is formed to seat and seal against the second sealing surface, and the first joint portion is formed t o join releasably with the second joint portion when the flange is severed along its le ngth to separate the cover and the first sealing surface and joint portions from the bas e and the second sealing surface and joint portions. The invention also includes a method of manufacturing such a vault.
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