Patent US3584272A successfully refreshed from Google Patents.
← Back to Patent Explorer
US3584272A Expired / Lapsed US ⏱️ 0.0 years remaining

Impregnated film capacitors

Assignee: Federal Pacific Electric Co
•
Filing: 1969-12-18
•
Granted: 1971-06-08
•
Expires: 1989-12-18
📄 Original PDF 🌐 Google Patents 🔄 Sync Now

Abstract

Abstract A capacitor has a multilayered dielectric. The dielectric has plastic and paper layers. The paper layer separates ends of the plastic layers to prevent the plastic layers from edge sealing.

Inventors

  • 👤 Paul S Martin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 23:52
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/20; H01G4/203

Claims Analysis

Total Claims: 8
Claim 1
Independent Claim 19 words
A capacitor in accordance with claim 1 wherein said strips of film and paper are of substantially equal widths.
Claim 2
Dependent Claim 66 words
A capacitor in accordance with claim 1 wherein the edges of said strips of said second dielectric separator in at least one end portion of the capacitor section and at one face of a given strip of foil are staggered in mirror-image symmetry in relation to the edges of said strips of said first dielectric separator at the opposite face of said given strip of foil.
Claim 3
Dependent Claim 55 words
A capacitor in accordance with claim 1 wherein said strips of film and paper are of substantially equal widths and wherein, in each end portion of the capacitor section, the edges of said strips of said second dielectric separator are staggered in mirror-image symmetry to corresponding edges of said strips of said first dielectric separator.
Claim 4
Dependent Claim 102 words
A capacitor in accordance with claim 1 wherein each of said strips of foil has one edge extending beyond the dielectric separators in a respective end portion of said capacitor section and wherein each of said strips of foil has its other edge recessed relative to said dielectric separators at the other end, respectively, of said capacitor section, the extending edge of a given strip of foil being farther from the edge of the strip of film next to the given strip of foil that it is from the edge of the strip of film spaced from the given strip of foil.
Claim 5
Dependent Claim 57 words
A capacitor in accordance with claim 1 wherein said strips of foil have their edges aligned with each other and are recessed relative to all of the edges of said dielectric spacers, the edges of the strips comprising said dielectric separators being staggered progressively in mirror-image symmetry at opposite sides of each of said strips of foil.
Claim 6
Dependent Claim 19 words
A capacitor in accordance with claim 6 wherein said strips of film and paper are of substantially equal widths.
Claim 7
Dependent Claim 123 words
A capacitor in accordance with claim 6 wherein the strips of film adjacent to the opposite surfaces of one of said strips of foil are recessed more than the edges of the strips of paper in the dielectric separators at opposite sides of said one of said strips of foil and the edges of the last-mentioned strips of paper are recessed more than the edges of other strips of film at opposite surfaces of said one strip of foil, further including a spacing strip of paper aligned edgewise with said edge of said one strip of foil, said spacing strip of paper extending at least as far from the center of the capacitor section as the edges of said other strips of film.
Claim 8
Dependent Claim 89 words
A capacitor in accordance with claim 1 wherein at least one edge of each of said strips of foil is recessed relative to the dielectric separators at the opposite sides thereof so that strips of film at opposite sides of said edge of said foil confront each other beyond the recessed foil edge, and a spacing strip of paper aligned edgewise with said recessed foil edge, said spacing strip of paper extending from said foil edge at least as far as the farthest-extending film strips of said dielectric separators.

References Cited (Backward Citations)

US3447048A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-06-07 1974-12-07 1975-06-08 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-06-07 1978-12-07 1979-06-08 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-06-07 1982-12-07 1983-06-08 $7700.00 Window Closed / Lapsed

Assigned Categories & Tags

No categories assigned to this patent yet.

Assign Category Tag