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US 4,304,956 AGranted
High voltage seismic bushing
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorMitsuhiro Kishida
Life of this patent
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AssigneeMitsubishi Denki Kabushiki Kaisha
InventorMitsuhiro Kishida
Estimating the term…
A high voltage seismic bushing charged with an insulating material has a procelain tube having an adapter rigidly connected to one end of the tube. The adapter is flexibly connected to a mounting flange such that the porcelain tube is free to move relative to the mounting flange in the event of an earthquake. The means for flexibly connecting the adapter to the mounting flange utilizes a spring mechanism to absorb the energy through friction to attenuate the movement of the porcelain tube. A resilient buffer member is interposed between the adapter and the mounting flange to provide a predetermined spacing therebetween and absorb the impact due to the movement of the adapter relative to the mounting flange. A sealing member seals the interface between the adapter and the mounting flange for containing the insulating material charged therein.
A high voltage seismic bushing charged with an insulating material and having a central conductor extending therethrough, comprising:
Dependencies are inferred from the claim text.