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US 4,282,699 AGranted
Heat sealing apparatus
AssigneeThe Mead Corporation
InventorJoseph J. Embro, Jr.
Life of this patent
Estimating the term…
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AssigneeThe Mead Corporation
InventorJoseph J. Embro, Jr.
Estimating the term…
For sealing the open end of a flanged container, a heated reciprocable sealing block having a heat emitting surface is arranged with its path of reciprocatory movement in general alignment with a container to be sealed and a sealing head is mounted on the sealing block by mounting means which is arranged to maintain a part of the sealing head in close heat transferring contact with the heat emitting surface of the sealing block and is also adapted to accommodate moderate misalignment of the sealing block and the container to be sealed. Containers to be sealed are mounted on individual carrier plates which are movable intermittently through an enclosure which may serve to isolate the sealing operation from atmosphere, the containers being sealed by a strip of lid stock which is secured by the sealing block to the flanges of the open ended containers. Following a sealing operation, the lid stock is gripped and severed so that each container is provided with an individual cover.
Container heat sealing apparatus comprising a heated reciprocable sealing block having a heat emitting surface, a sealing head mounted on said sealing block, mounting means for holding a part of said sealing head in close heat transferring slidable contact with said heat emitting surface whereby said sealing head is adapted to accommodate moderate misalignment of said reciprocable sealing block and a container to be sealed which is disposed in general alignment with the path of reciprocatory movement of said sealing block and said sealing head, a container carrier plate having resilient container support means disposed in the path of reciprocable movement of said sealing block, said resilient container support means including a groove formed in said carrier plate and a resilient O-ring disposed in said groove, and a sealing ring supported by said O-ring and engageable with the flange of a container to be sealed and having a flanged open end.
Dependencies are inferred from the claim text.