| 摘要 |
A can top sealer includes a locking cap and ratchet plate which includes ratchets adapted to be shifted into engagement with the can below the can lip upon turning of the cap in one direction relative to the plate. Upon reverse movement the ratchets are retracted to free the sealer from the can. A gasket is included for purposes of completing the hermetic seal while a retaining ring maintains the parts in an assembled condition.
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