US4002818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lipped cable entry seal for pressurized sleeve
Assignee: Siemens AG
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Filing: 1975-07-25
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Granted: 1977-01-11
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Expires: 1995-07-25
Abstract
Abstract A protective sleeve for a cable which is to be pressurized internally for leak-detection and cable preservation has a seal near an end thereof through which one or more cables pass into the interior of the sleeve. The seal has a lip formed about the periphery of its inner face, subject to pressure within the sleeve and extending radially and longitudinally from the face to engage the interior surface of the sleeve or sealing compound placed thereon. Pressure within the sleeve forces the lip against the interior surface of the sleeve to form a gas-tight seal regardless of reasonable variations in the internal diameter of the sleeve. One or more lamellations back up the inner, sealing face of the seal and engage each cable passing through the seal. The seal is conveniently made in two pieces for fitting about a continuous cable, and the sections of the seal are joined by tongue and groove arrangements or enlarged sealing surfaces at the joints.
Inventors
- 👤 Dieter Kunze
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:45
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/013
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
125 words
A cable sleeve entry seal adapted to position and seal at least one cable passing therethrough and to contain pressurized gas about said cable and within a cable sleeve thereabout comprising: a lip member extending radially outwardly and longitudinally inwardly from a longitudinally inward radial sealing surface of said entry seal and engageable with an inner surface of said sleeve, the lip being sealed against said sleeve surface by gas pressure thereon from within said sleeve and inwardly of said seal; a coating of plastic sealing compound applied to an inner surface of said sleeve and to an outer surface of said cable; and at least two longitudinally-spaced, radially inwardlyextending sealing elements engaging said cable surface via said sealing compound coated on said cable surface.
Claim 2
Dependent Claim
125 words
A cable sleeve entry seal adapted to position and seal at least one cable passing therethrough and to contain pressurized gas about said cable and within a cable sleeve thereabout comprising: a lip member extending radially outwardly and longitudinally inwardly from a longitudinally inward radial sealing surface of said entry seal and engageable with an inner surface of said sleeve, the lip being sealed against said sleeve surface by gas pressure thereon from within said sleeve and inwardly of said seal; a coating of plastic sealing compound applied to an inner surface of said sleeve and to an outer surface of said cable; and at least two longitudinally-spaced, radially inwardlyextending sealing elements engaging said cable surface via said sealing compound coated on said cable surface.
Claim 3
Dependent Claim
66 words
A cable entry seal as defined in claim 1, wherein the seal is longitudinally divided into sections through a diameter of each cable opening in said seal and the lip member has a cross-section which is enlarged at each longitudinal division of the seal in comparison to cross-sections at any other portion of the lip, thereby to increase the contact sealing area between said seal portions.
Claim 4
Dependent Claim
33 words
A cable entry seal as defined in claim 1, further comprising at least one lamellar sealing element extending radially from said cable to said sleeve and spaced longitudinally apart from said lip member.
Claim 5
Dependent Claim
108 words
A pressurized cable sleeve seal having a cable extending therethrough, the seal being divided longitudinally and fitting tightly on said cable and having a seal means extending generally radially from said cable to an inner wall of said cable sleeve, said seal means having a peripheral lip extending into a pressurized interior portion of said cable sleeve in juxtaposition to said inner wall of said cable sleeve whereby the pressure within said cable sleeve forces said peripheral lip into tight-fitting engagement with the inner wall of said cable sleeve, and the tight fit of said seal on said cable is effected by tensioning band circumferentially about said seal.
Claim 6
Dependent Claim
108 words
A pressurized cable sleeve seal having a cable extending therethrough, the seal being divided longitudinally and fitting tightly on said cable and having a seal means extending generally radially from said cable to an inner wall of said cable sleeve, said seal means having a peripheral lip extending into a pressurized interior portion of said cable sleeve in juxtaposition to said inner wall of said cable sleeve whereby the pressure within said cable sleeve forces said peripheral lip into tight-fitting engagement with the inner wall of said cable sleeve, and the tight fit of said seal on said cable is effected by tensioning band circumferentially about said seal.
Claim 7
Dependent Claim
37 words
A pressurized cable sleeve seal as defined in claim 4, wherein said seal means has a longitudinal thickness including a plurality of longitudinally-spaced lamellar plates, said plates strengthening said seal means and improving the seal provided thereby.
Claim 8
Dependent Claim
142 words
A sealing member consisting of a synthetic material for the sealed entry of at least one cable into an end of a hollow cable sleeve and comprising: two symmetrically constructed semicircular seal sections; a first longitudinal portion of each said seal section having a diameter with cushioned circumferential sealing lips thereon engageable with inward surfaces of said cable sleeve; a second longitudinal portion of each said seal section comprising a generally cylindrical projection extended longitudinally opposite the direction of cable entry and having a second, smaller diameter; a plurality of longitudinally-spaced, lamellar sealing elements in said first and second longitudinal portions engageable with an exterior surface of the cable; and the semi-circular seal sections after insertion of said cables into the sleeve being clamped together about the cable by means of a tension band arranged about said projection having the smaller diameter.
Claim 9
Dependent Claim
142 words
A sealing member consisting of a synthetic material for the sealed entry of at least one cable into an end of a hollow cable sleeve and comprising: two symmetrically constructed semicircular seal sections; a first longitudinal portion of each said seal section having a diameter with cushioned circumferential sealing lips thereon engageable with inward surfaces of said cable sleeve; a second longitudinal portion of each said seal section comprising a generally cylindrical projection extended longitudinally opposite the direction of cable entry and having a second, smaller diameter; a plurality of longitudinally-spaced, lamellar sealing elements in said first and second longitudinal portions engageable with an exterior surface of the cable; and the semi-circular seal sections after insertion of said cables into the sleeve being clamped together about the cable by means of a tension band arranged about said projection having the smaller diameter.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |