US4240126A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric capacitor constructed to prevent explosion
Assignee: ICAR SpA Industria Condensatori Applicazioni Elettroelettroniche
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Filing: 1979-02-16
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Granted: 1980-12-16
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Expires: 1999-02-16
Abstract
Abstract This disclosure relates to an explosion protection device for a capacitor th a metal casing. According to the invention, an electrical capacitor comprises an intermediate member located above the plates within a cup casing, which is closed upperly by a cover carrying terminals electrically connected to the plates and is axially deformable in a region between the intermediate member and the cover by the action of internal pressure. The intermediate member comprises a peripheral annular portion, from which two appendices project towards the center. Said appendices carry conductors, which are caused to rest resiliently against the inner end of the terminals when the casing is undeformed and are separated therefrom when the casing is deformed.
Inventors
- 👤 Enrico Sanvito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:13
CPC Classifications
H; H01; H01G; H01G2/00; H01G2/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
87 words
An electrical capacitor comprising: a generally cup-shaped casing; a plurality of capacitor plates having dielectric material therebetween disposed in said casing, said plates forming a plate assembly having opposite ends; an annular member disposed in said casing above said capacitor plate plate assembly and having a peripheral wall which abuts the casing along the peripheral length of said wall; first and second resilient support members projecting generally radially inward from said peripheral wall of said annular member, said members being resiliently moveable toward said capacitor plate assembly;
Claim 2
Dependent Claim
87 words
An electrical capacitor comprising: a generally cup-shaped casing; a plurality of capacitor plates having dielectric material therebetween disposed in said casing, said plates forming a plate assembly having opposite ends; an annular member disposed in said casing above said capacitor plate plate assembly and having a peripheral wall which abuts the casing along the peripheral length of said wall; first and second resilient support members projecting generally radially inward from said peripheral wall of said annular member, said members being resiliently moveable toward said capacitor plate assembly;
Claim 3
Dependent Claim
128 words
first and second conductors supported by said first and second support members, respectively, in contact with respective ends of said capacitor plate assembly; a cover closing the upper end of said housing above said annular member; first and second terminals supported by said cover in pressure contact with said first and second conductors, respectively, to urge the conductors toward the capacitor plate assembly by resiliently bending said resilient support members; and axially deformable wall section means forming a part of said housing disposed between said cover and said annular member for elongated said part of said housing in response to internal pressurization in said housing, the resulting elongation being sufficient to move said cover away from said annular member and remove said terminals from contact with said conductors.
Claim 4
Dependent Claim
128 words
first and second conductors supported by said first and second support members, respectively, in contact with respective ends of said capacitor plate assembly; a cover closing the upper end of said housing above said annular member; first and second terminals supported by said cover in pressure contact with said first and second conductors, respectively, to urge the conductors toward the capacitor plate assembly by resiliently bending said resilient support members; and axially deformable wall section means forming a part of said housing disposed between said cover and said annular member for elongated said part of said housing in response to internal pressurization in said housing, the resulting elongation being sufficient to move said cover away from said annular member and remove said terminals from contact with said conductors.
Claim 5
Dependent Claim
31 words
A capacitor as claimed in claim 1, wherein said annular member is constructed of relatively resilient insulating material, and wherein said support members are in one piece with the peripheral wall.
Claim 6
Dependent Claim
32 words
A capacitor as claimed in claim 2, wherein said conductors are of strip configuration, at least in the portion supported by the support members, where they are in contact with the terminals.
Claim 7
Dependent Claim
42 words
A capacitor as claimed in claim 1, wherein said peripheral wall is of thin walled cylindrical configuration having one rim disposed between the casing and said plate assembly, in order to keep the plate assembly centred in, and separated from the casing.
Claim 8
Dependent Claim
35 words
A capacitor as claimed in claim 1, wherein said wall section of said casing is a circumferential inwardly directed deformation of the casing abutting against said annular to inhibit axial movement of the annular members.
Claim 9
Dependent Claim
22 words
A capacitor as claimed in claim 4, wherein said annular member comprises an inner radial rim which rests axially on the plates.
References Cited (Backward Citations)
CA667307A
Cited
FR2257135A2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-16 | 1984-06-16 | 1984-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-16 | 1988-06-16 | 1988-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-16 | 1992-06-16 | 1992-12-16 | $7700.00 | Window Closed / Lapsed |