Patent US3739245A successfully refreshed from Google Patents.
US3739245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wound suppresser capacitor with shock protection
Assignee: International Standard Electric Corp
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Filing: 1971-07-28
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Granted: 1973-06-12
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Expires: 1991-07-28
Abstract
Abstract This invention relates to a four pole electrical wound capacitor for suppressing interferring voltages on current conducting lines. Two tapes of a thin dielectric material are each provided on one side with an electrical conducting metal layer for forming electrodes. Two lead-in conductors are connected to each layer, said lead-in conductors not only conducting the interferring current, but also the operating current flowing past the capacitor. The geometry and configuration of the wound capacitor provides a high Q LC filter which eliminates unwanted frequencies. An additional electrode foil with a terminal is in the capacitor to provide shock protection.
Inventors
- 👤 K Fuchshuber
- 👤 E Harkness
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:51
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/005; H01G4/015
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
155 words
A four-pole self-healing electrical wound capacitor for suppressing interferring voltages on current conducting lines comprising: a core tube; first and second tapes of thin dielectric material each provided on one side with an electrically conducting metal layer for forming electrodes, said tapes wound on said core tube to form a winding; two metal contact bridges, each at one end-face of said winding for holding the turns of said winding parallel in relation to one another; an electrode foil wound into said capacitor winding; an outer terminal coupled to said foil and insulated from said electrodes for establishing a shock-protection capacitance; third and fourth dielectric tapes arranged between said foil and said electrodes; and two lead-in conductors for conducting the interferring and operating current flowing past said capacitor, each of said lead-in conductors forming bipolar terminals coupled to opposite ones of said two metal contact bridges such that no operating current will flow through said electrodes.
Claim 2
Dependent Claim
155 words
A four-pole self-healing electrical wound capacitor for suppressing interferring voltages on current conducting lines comprising: a core tube; first and second tapes of thin dielectric material each provided on one side with an electrically conducting metal layer for forming electrodes, said tapes wound on said core tube to form a winding; two metal contact bridges, each at one end-face of said winding for holding the turns of said winding parallel in relation to one another; an electrode foil wound into said capacitor winding; an outer terminal coupled to said foil and insulated from said electrodes for establishing a shock-protection capacitance; third and fourth dielectric tapes arranged between said foil and said electrodes; and two lead-in conductors for conducting the interferring and operating current flowing past said capacitor, each of said lead-in conductors forming bipolar terminals coupled to opposite ones of said two metal contact bridges such that no operating current will flow through said electrodes.
Claim 3
Dependent Claim
35 words
A four-pole electrical wound capacitor according to claim 1 wherein the self-resonant frequency of said capacitor is in the lower range of the spectrum of interferring frequencies to be suppressed (0.1 MHz to 30 MHz).
Claim 4
Dependent Claim
17 words
A four-pole electrical wound capacitor according to claim 2 wherein said self-resonant frequency is below 6 MHz.
Claim 5
Dependent Claim
21 words
A four-pole electrical wound capacitor according to claim 1 wherein said capacitor has a capacitance not less than 0.5 Mu F.
Claim 6
Dependent Claim
36 words
A four-pole electrical wound capacitor according to claim 1 wherein each of said two lead-in conductors is V-shaped such that only a short central part thereof is connected to one of said two metal contact bridges.
Claim 7
Dependent Claim
20 words
A four-pole electrical wound capacitor according to claim 1 wherein said terminals are extended to one side of said winding.
Claim 8
Dependent Claim
22 words
A four-pole electrical wound capacitor according to claim 1 wherein the outer diameter of said winding is greater than its axial length.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-11 | 1976-12-11 | 1977-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-11 | 1980-12-11 | 1981-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-11 | 1984-12-11 | 1985-06-12 | $7700.00 | Window Closed / Lapsed |