Patent US4740653A successfully refreshed from Google Patents.
US4740653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical cable splice enclosure
Assignee: 3M Co
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Filing: 1986-12-05
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Granted: 1988-04-26
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Expires: 2006-12-05
Abstract
Abstract An electrical medium voltage cable connection enclosure for an oil-filled, paper-insulated cable has a spacer body arranged between a core connection area and a shielding enclosure. The spacer body is a prefabricated, resilient, open-pore foam material body which has an air-free filler of electricity insulating, flowable, impregnating compound and is longitudinally split and put under a resilient pressing force by the shielding enclosure.
Inventors
- 👤 Dieter Hellbusch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:01
CPC Classifications
H; H01; H01R; H01R9/00; H02; H02G; H02G15/00; H02G15/20; H02G15/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
163 words
A medium voltage electrical cable connection enclosure for two cables each of which comprises a core having a core conductor and an electrically insulating and sealing cable sheath, end portions of the core conductors being exposed in a core connection area and being electrically interconnected, comprising: an electrically insulating spacer body for surrounding the core connection, said spacer body being formed of a resilient open-pore foam material which, prior to installation around the core connection, is filled in an air-free manner with an electrically insulating, flowable, impregnating compound which at room temperature will not leak from the open foam material spacer body because of its viscosity and its adhesion to the foam material spacer body, which spacer body has a longitudinal slit and thereby is adapted to be placed onto the throughgoing core connection area, and a spacer body enclosure for surrounding the spacer body, said spacer body enclosure being formed to exert a resilient pressing force on the foam material spacer body.
Claim 2
Independent Claim
163 words
A medium voltage electrical cable connection enclosure for two cables each of which comprises a core having a core conductor and an electrically insulating and sealing cable sheath, end portions of the core conductors being exposed in a core connection area and being electrically interconnected, comprising: an electrically insulating spacer body for surrounding the core connection, said spacer body being formed of a resilient open-pore foam material which, prior to installation around the core connection, is filled in an air-free manner with an electrically insulating, flowable, impregnating compound which at room temperature will not leak from the open foam material spacer body because of its viscosity and its adhesion to the foam material spacer body, which spacer body has a longitudinal slit and thereby is adapted to be placed onto the throughgoing core connection area, and a spacer body enclosure for surrounding the spacer body, said spacer body enclosure being formed to exert a resilient pressing force on the foam material spacer body.
Claim 3
Dependent Claim
46 words
The cable connection enclosure of claim 1 wherein the longitudinal slit in the spacer body extends through the wall of the spacer body as a curved cutting surface which in cross section merges generally tangentially with the interior and exterior circumferential surfaces of the spacer body.
Claim 4
Dependent Claim
42 words
The cable connection enclosure of claim 1 in which at least one cable to be connected is oil filled, wherein the impregnating compound is an impregnating oil that is compatible or identical with the cable oil within the cable to be connected.
Claim 5
Dependent Claim
13 words
The cable connection enclosure of claim 3, wherein the impregnating oil is gelled.
Claim 6
Dependent Claim
29 words
The cable connection enclosure of claim 1 wherein a plastic sheet extends around the hollow interior of the spacer body and has gripping portions projecting through the longitudinal slit.
Claim 7
Dependent Claim
33 words
The cable connection enclosure of claim 5 wherein the plastic sheet is perforated in a direction parallel to the axis of the spacer body centrally within the hollow interior of the spacer body.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-04-26 | 1991-10-26 | 1992-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-04-26 | 1995-10-26 | 1996-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-04-26 | 1999-10-26 | 2000-04-26 | $7700.00 | Window Closed / Lapsed |