Housing for an electric device
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United States of America Patent
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-
Jun 16, 1992
Grant Date -
N/A
app pub date -
Dec 28, 1989
filing date -
Dec 28, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A housing for an electric device, such as a power transformer or an X-ray tube, comprises a tank which contains electric components of the device and which is filled with an insulating and/or cooling liquid, such as. A lid is arranged at a planar top portion of the tank and hermetically sealed thereto. The lid is at least partially flexible for enabling movement of the lid when the liquid expands and contracts due to heating and cooling, respectively. In a preferred embodiment, the lid comprises a gasket at its periphery and a rigid portion at its center. A frame can be provided for pressing the gasket against the tank. At the frame, at least one rod or spring can be fastened for guiding the movement of the lid perpendicular to the plane of the planar top portion.
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