Seiki HORIMOTO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
Abstract: A packer connected to a casing pipe, the packer including a connecting tube made of metal and connected to the casing pipe, and a packer part made of metal and attached around the connecting tube. The packer part has a hollow part inside. A sealed liquid that thermally expands is sealed in the hollow part. An outer peripheral wall of the packer part includes an expansive part that protrudingly deforms outward with the thermal expansion of the sealed liquid.
Type:
Grant
Filed:
December 9, 2016
Date of Patent:
October 13, 2020
Assignees:
TEISEKI DRILLING CO., LTD., THE UNIVERSITY OF TOKYO
Abstract: A packer connected to a casing pipe, the packer including a connecting tube made of metal and connected to the casing pipe, and a packer part made of metal and attached around the connecting tube. The packer part has a hollow part inside. A sealed liquid that thermally expands is sealed in the hollow part. An outer peripheral wall of the packer part includes an expansive part that protrudingly deforms outward with the thermal expansion of the sealed liquid.
Type:
Application
Filed:
December 9, 2016
Publication date:
December 27, 2018
Applicants:
TEISEKI DRILLING CO., LTD., THE UNIVERSITY OF TOKYO
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