Feedthrough capacitor filter assemblies with leak detection vents
First Claim
1. A feedthrough capacitor filter assembly, comprising:
- a capacitor body having first and second electrode plates encased therein in spaced relation, at least one terminal pin bore formed axially therethrough, and at least one leak detection passage extending axially therethrough;
at least one conductive terminal pin extending through said at least one terminal pin bore in conductive relation with said first electrode plate;
a conductive ferrule having at least one aperture formed axially therethrough, said capacitor body being mounted to said ferrule to extend across and close said at least one ferrule aperture with said second electrode plate in conductive relation with said ferrule; and
at least one hermetic seal formed from a dielectric material and extending across and sealing said at least one ferrule aperture at one axial side of said capacitor body, said at least one hermetic seal defining an inboard face presented toward said capacitor body and an outboard face presented away from said capacitor body, said at least one terminal pin extending through said at least one hermetic seal;
wherein said at least one leak detection passage vents said inboard face of said at least one hermetic seal.
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Accused Products
Abstract
A feedthrough capacitor filter assembly includes a capacitor having first and second sets of conductive electrode plates embedded within an insulative or dielectric body, and a leak detection vent for facilitated hermetic seal testing prior to use. At least one feedthrough terminal pin extends through the capacitor in conductive relative with the first set of electrode plates, and an outer ferrule is mounted about the capacitor in conductive relation with the second set of electrode plates. A hermetic seal is seated within the ferrule at one side of the capacitor to prevent leakage of fluid through the filter assembly. The hermetic seal is spaced from a face of the capacitor to form a gap therebetween.
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Citations
57 Claims
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1. A feedthrough capacitor filter assembly, comprising:
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a capacitor body having first and second electrode plates encased therein in spaced relation, at least one terminal pin bore formed axially therethrough, and at least one leak detection passage extending axially therethrough;
at least one conductive terminal pin extending through said at least one terminal pin bore in conductive relation with said first electrode plate;
a conductive ferrule having at least one aperture formed axially therethrough, said capacitor body being mounted to said ferrule to extend across and close said at least one ferrule aperture with said second electrode plate in conductive relation with said ferrule; and
at least one hermetic seal formed from a dielectric material and extending across and sealing said at least one ferrule aperture at one axial side of said capacitor body, said at least one hermetic seal defining an inboard face presented toward said capacitor body and an outboard face presented away from said capacitor body, said at least one terminal pin extending through said at least one hermetic seal;
wherein said at least one leak detection passage vents said inboard face of said at least one hermetic seal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A feedthrough capacitor filter assembly, comprising:
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a capacitor body formed from a dielectric material encasing first and second sets of electrode plates in an interleaved spaced array, at least one terminal pin bore formed axially therethrough, and at least one leak detection passage extending axially therethrough;
at least one conductive terminal pin extending through said at least one terminal pin bore in conductive relation with said first set of electrode plates;
a conductive ferrule having at least one aperture formed axially therethrough, said capacitor body being mounted to said ferrule to extend across and close said at least one ferrule aperture with said second set of electrode plates in conductive relation with said ferrule; and
at least one hermetic seal formed from a dielectric material and extending across and sealing said at least one ferrule aperture at one axial side of said capacitor body, said at least one hermetic seal defining an inboard face presented toward said capacitor body and an outboard face presented away from said capacitor body, said at least one terminal pin extending through said at least one hermetic seal;
said at least one hermetic seal and said capacitor body cooperatively defining an axial gap formed therebetween;
said at least one leak detection passage venting said gap. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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29. In a feedthrough capacitor filter assembly having a capacitor body with first and second electrode plates encased therein in spaced relation and at least one terminal pin bore formed axially therethrough, at least one conductive terminal pin extending through said at least one terminal pin bore in conductive relation with said first electrode plate, a conductive ferrule having at least one aperture formed axially therethrough, said capacitor body being mounted to said ferrule to extend across and close said at least one ferrule aperture with said second electrode plate in conductive relation with said ferrule, and at least one hermetic seal formed from a dielectric material and extending across and sealing said at least one ferrule aperture at one axial side of said capacitor body, said at least one hermetic seal defining an inboard face presented toward said capacitor body and an outboard face presented away from said capacitor body, said at least one terminal pin extending through said at least one hermetic seal, the improvement comprising:
means for venting said inboard face of said at least one hermetic seal, wherein said capacitor body has at least one leak detection passage extending axially therethrough, said leak detection passage forming at least a portion of said venting means. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36)
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37. A feedthrough filter capacitor, comprising:
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a capacitor body having first and second electrode plates encased therein in spaced relation, and at least one terminal pin bore formed axially therethrough;
said capacitor body having at least one leak detection passage extending axially therethrough. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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50. A feedthrough capacitor filter assembly, comprising:
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a capacitor body having first and second electrode plates encased therein in spaced relation, a plurality of terminal pin bores formed axially therethrough, and at least one leak detection passage extending axially therethrough;
at least one conductive terminal pin extending through at least one of the terminal pin bores in conductive relation with said first electrode plate;
a conductive ferrule having at least one aperture formed axially therethrough, said capacitor body being mounted to said ferrule to extend across and close said at least one ferrule aperture with said second electrode plate in conductive relation with said ferrule; and
at least one hermetic seal formed from a dielectric material and extending across and sealing said at least one ferrule aperture at one axial side of said capacitor body, said at least one hermetic seal defining an inboard face presented towards said capacitor body and an outboard face presented away from said capacitor body, said at least one terminal pin extending through said hermetic seal, wherein said at least one hermetic seal and said capacitor body cooperatively define an axial gap formed therebetween. - View Dependent Claims (51, 52, 53, 54, 55, 56, 57)
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Specification