Sealed Electrical Feedthrough
AssigneeABB Schweiz AG
InventorsBrian C. Smith, Brian J. Robertson
Life of this patent
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Abstract
The invention provides an explosion resistant electrical fitting, including a cylindrical body, a sealing ring, a locking element, and a printed circuit board (PCB). The cylindrical body includes a first end, a second end opposite the first end, an interior cavity extending from the first end to the second end, a shoulder at the second end protruding radially outward relative to a central axis, and a threaded surface. The sealing ring is arranged about the cylindrical body between the threaded surface and the shoulder of the cylindrical body. The locking element is arranged at the first end. The PCB is arranged in the interior cavity of the cylindrical body.
Claims18
An explosion resistant electrical fitting, comprising:
- a cylindrical body, including:
- a first end,
- a second end opposite the first end,
- an interior cavity extending from the first end to the second end,
- a shoulder at the second end protruding radially outward relative to a central axis, and
- a threaded surface;
- a sealing ring arranged about the cylindrical body between the threaded surface and the shoulder of the cylindrical body;
- a locking element arranged at the first end;
- and
- a printed circuit board (PCB) arranged in the interior cavity of the cylindrical body.
An explosion-resistant assembly, comprising:
- a housing with a first chamber, a second chamber, and a bore between the first chamber and the second chamber, the bore having a first threaded surface;
- a cylindrical body, including:
- a first end,
- a second end opposite the first end,
- an interior cavity extending from the first end to the second end,
- a shoulder at the second end protruding radially outward relative to a central axis, and
- a second threaded surface;
- a sealing ring arranged about the cylindrical body between the second threaded surface and the shoulder of the cylindrical body;
- a locking element arranged at the first end;
- and
- a printed circuit board (PCB) arranged in the interior cavity of the cylindrical body,
- wherein the cylindrical body is arranged within the bore such that the first threaded surface is engaged with the second threaded surface, and
- wherein the sealing ring is arranged between the cylindrical body and the bore such that a seal is formed between the cylindrical body and the bore.
A method for providing an explosion-resistant electrical fitting between a first and second chamber, the method comprising:
- providing a cylindrical body with a threaded surface and a radially outwardly protruding shoulder, a printed circuit board (PCB) arranged within the cylindrical body, and a sealing ring arranged about a circumferential periphery of the cylindrical body;
- arranging the cylindrical body within a threaded bore between the first and second chambers by rotating the cylindrical body such that the threaded surface of the cylindrical body engages with the threaded bore;
- and
- rotating the cylindrical body in a first rotational direction until the shoulder of the cylindrical body contacts an end stop formed at one end of the threaded bore.
Dependencies are inferred from the claim text.