Segmented metallized film
AssigneeParallax Power Components, LLC
InventorEdward M. Lobo
Life of this patent
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Abstract
A segmented metallized film having a dielectric film, a metallized layer, and at least one fuse disposed within each segment of a plurality of segments along a center margin of the metallized layer. The metallized layer is on a portion of the dielectric film such that the dielectric film has a metallized edge, an unmetallized edge, and an uncoated area between the metallized layer and the unmetallized edge. The center margin is substantially parallel to the machine direction of the film. The center margin is disposed in the metallized layer approximately equidistant to the metallized edge and to the unmetallized edge. The metallized layer has a plurality of transverse margins running from the center margin to the uncoated area. The center margin and the plurality of transverse margins define the plurality of segments.
Claims19
A film for self-protected capacitors, wherein the film is wound in a machine direction, the film comprising:
- (a) a dielectric film;
- (b) a metallized layer on a portion of the dielectric film such that the dielectric film has a metallized edge, an unmetallized edge, and an uncoated area between the metallized layer and the unmetallized edge,
- wherein the metallized layer has a center margin substantially parallel to the machine direction of the film,
- wherein the center margin is disposed in the metallized layer approximately equidistant to the metallized edge and to the unmetallized edge,
- wherein the metallized layer has a plurality of transverse margins running from the center margin to the uncoated area, and
- wherein the center margin and the plurality of transverse margins define a plurality of segments;
- and
- (c) at least one fuse disposed in the center margin within each segment of the plurality of segments,
- wherein a first region of the metallized layer is proximate to the metallized edge and a second region of the metallized layer is between the first region and the uncoated area, wherein the first region has a metallization heavier than the second region, and wherein the center margin is in the second region, and
- wherein a transition area is disposed between the first region and the second region.
A film for self-protected capacitors, wherein the film is wound in a machine direction, the film comprising:
- (a) a dielectric film;
- (b) a metallized layer on a portion of the dielectric film such that the dielectric film has a metallized edge, an unmetallized edge, and an uncoated area between the metallized layer and the unmetallized edge,
- wherein the metallized layer has a first region proximate to the metallized edge, the first region having a first metallization,
- wherein the metallized layer has a second region between the first region and the uncoated area, the second region having a second metallization,
- wherein the first metallization is heavier than the second metallization,
- wherein the metallized layer has a transition area disposed between the first region and the second region,
- wherein the metallized layer has a center margin substantially parallel to the machine direction of the film,
- wherein the center margin is disposed in the second region,
- wherein the metallized layer has a plurality of transverse margins running from the center margin to the uncoated area, and
- wherein the center margin and the plurality of transverse margins define a plurality of segments;
- and
- (a) at least one fuse disposed in the center margin within each segment of the plurality of segments.
A self-protected capacitor comprising:
- (a) a housing;
- and
- (b) a capacitor roll inside the housing, the capacitor roll comprising two wound segmented metallized films, each segmented metallized film comprising
- a dielectric film,
- a metallized layer on a portion of the dielectric film such that the dielectric film has a metallized edge, an unmetallized edge, and an uncoated area between the metallized layer and the unmetallized edge,
- wherein the metallized layer has a center margin substantially parallel to the machine direction of the film,
- wherein the center margin is disposed in the metallized layer approximately equidistant to the metallized edge and to the unmetallized edge,
- wherein the metallized layer has a plurality of transverse margins running from the center margin to the uncoated area, and
- wherein the center margin and the plurality of transverse margins define a plurality of segments, and
- at least one fuse disposed in the center margin within each segment of the plurality of segments, and
- wherein the two wound segmented metallized films are stacked such that their metallized edges are on opposite sides of the capacitor roll,
- wherein the metallized layer has a first region proximate to the metallized edge, the first region having a first metallization,
- wherein the metallized layer has a second region between the first region and the uncoated area, the second region having a second metallization,
- wherein the first metallization is heavier than the second metallization,
- wherein the metallization layer has a transition area disposed between the first region and the second region, and
- wherein the center margin is disposed in the second region.
Dependencies are inferred from the claim text.