US4227043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device for portions of electric cables in the holes of housings of electric motors or the like
Assignee: Klein Schanzlin and Becker AG
•
Filing: 1978-06-22
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Granted: 1980-10-07
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Expires: 1998-06-22
Abstract
Abstract That part of the sheath of an electric cable which extends through a hole in the housing of a submersible pump motor is surrounded by a metallic sleeve having end portions of reduced diameter. Such end portions and the adjacent portions of the sheath are surrounded by and bonded to tubular insulators whose maximum outer diameter does not exceed the maximum outer diameter of the sleeve. The insulators may consist of convoluted strip-shaped material or foil which is bonded to the adjacent portions of the sleeve and sheath. The clearance between the median portion of the sleeve and the surface surrounding the hole is sealed by one or more O-rings or by a bolt which is threadedly connected to the housing and surrounds the sleeve, a nut which surrounds the sleeve and meshes with the bolt, and a deformable ring seal which is interposed between the sleeve on the one hand and the bolt and nut on the other hand to be deformed by the nut when the latter is rotated in a direction to receive a larger portion of the bolt.
Inventors
- 👤 Heinz Stohr
- 👤 Gerhard Kuntz
- 👤 Gerhard Scheer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:33
CPC Classifications
H; H02; H02G; H02G3/00; H02G3/02; H02G3/06; H02G3/0616
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
162 words
In combination, a wall member having a hole extending therethrough, an electric cable having a sheath extending through said hole, and a sealing device sealing the cable at the hole and comprising, an elongated sleeve surrounding said cable sheath and extending through said hole, said elongated sleeve including a median portion having a first outer diameter and extending through the hole, and two opposite end portions having smaller second outer diameters; means sealing the interface between said median portion of said sleeve and the surface of the wall member which bounds the hole; and a pair of tubular insulating portions, each sealingly surrounding one end portion of said sleeve and the adjacent portion of the cable sheath and each having an outer diameter which is at most equal to said first outer diameter so that either of said insulating portions can pass through the hole and past said sealing means as the sealing device is introduced into and withdrawn from the hole.
Claim 2
Dependent Claim
162 words
In combination, a wall member having a hole extending therethrough, an electric cable having a sheath extending through said hole, and a sealing device sealing the cable at the hole and comprising, an elongated sleeve surrounding said cable sheath and extending through said hole, said elongated sleeve including a median portion having a first outer diameter and extending through the hole, and two opposite end portions having smaller second outer diameters; means sealing the interface between said median portion of said sleeve and the surface of the wall member which bounds the hole; and a pair of tubular insulating portions, each sealingly surrounding one end portion of said sleeve and the adjacent portion of the cable sheath and each having an outer diameter which is at most equal to said first outer diameter so that either of said insulating portions can pass through the hole and past said sealing means as the sealing device is introduced into and withdrawn from the hole.
Claim 3
Dependent Claim
15 words
The combination as defined in claim 1, wherein said sleeve consists of a metallic material.
Claim 4
Dependent Claim
21 words
The combination as defined in claim 1, wherein at least one of said insulating portions consists of a convoluted strip-shaped material.
Claim 5
Dependent Claim
22 words
The combination as defined in claim 1, wherein at least one of said insulating portions consists of injection molded synthetic plastic material.
Claim 6
Dependent Claim
32 words
The combination as defined in claim 1, wherein at least one of said insulating portions is vulcanized onto the respective end portion of said sleeve and the adjacent portion of said sheath.
Claim 7
Dependent Claim
48 words
The combination as defined in claim 1, wherein at least one of said insulating portions consists of strip-shaped vulcanizable material which is convoluted onto the respective end portion of the sleeve and onto the adjacent portion of the sheath and is thereupon bonded to such parts by heating.
Claim 8
Dependent Claim
36 words
The combination as defined in claim 1, wherein said sealing means includes at least one deformable annular sealing element contacting said median portion of said sleeve and the surface of said wall member surrounding said hole.
Claim 9
Dependent Claim
30 words
The combination as defined in claim 7, wherein said median portion has an external surface and at least one of said surfaces has a groove receiving said annular sealing element.
Claim 10
Dependent Claim
64 words
The combination as defined in claim 1, wherein said sealing means includes an annular bolt surrounding said median portion of said sleeve and threadedly connected to said wall member, a nut mating with said bolt, and an annular sealing element interposed between and contacting said nut and said sleeve, said element being deformable in response to rotation of said nut relative to said bolt.
Claim 11
Dependent Claim
25 words
The combination as defined in claim 1, wherein said sealing means includes means for releasably securing said sleeve to said wall member against axial movement.
References Cited (Backward Citations)
US2924644A
Cited
US3043903A
Cited
US3104277A
Cited
US3033919A
Cited
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Cited
US3084210A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-10-07 | 1984-04-07 | 1984-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-07 | 1988-04-07 | 1988-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-07 | 1992-04-07 | 1992-10-07 | $7700.00 | Window Closed / Lapsed |