US3889047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing and moisture-proofing of electrical joints
Assignee: Lockheed Martin Corp
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Filing: 1974-02-15
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Granted: 1975-06-10
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Expires: 1994-02-15
Abstract
Abstract Water-proof insulation for an electrical connection comprising a protective solid anaerobic coating on the electrical conductors enclosed within a heat shrinkable plastic sleeve. A coating of anaerobic sealant is applied to the surfaces of the conductors comprising the electrical connection and a sleeve of heat shrinkable plastic is placed around the sealant-coated conductors. The assembly is then heated, thereby shrinking the plastic sleeve so as to prevent air from reaching the sealant, which then polymerizes. The resulting flexible insulated joint is water-proof and resists corrosion. The joint may be readily repaired by splitting and removing the plastic sleeve, and removing the polymerized sealant with an appropriate solvent.
Inventors
- 👤 David Carver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:45
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/08; H02G15/18; H02G15/1806; B; B29; B29C; B29C61/00; H01; H01R; H01R4/00; H01R4/70; H01R4/72
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
135 words
The method of making an hermetically-sealed electrical connection between two metallic conductors comprising the sequential steps of: mechanically joining the two ends of said electrical conductors to provide an electrical circuit path therethrough; disposing a heat-shrinkable dielectric sleeve about the exterior of the joined ends of said conductors; introducing an anaerobic sealant material between said sleeve and the joined ends of said conductors so as to cause it to be confined therebetween and to contact the metallic surfaces of said joined ends; and, radially shrinking said sleeve about said material, by the application of heat thereto so as to hermetically enclose said anaerobic material and cause it to polymerize by reason of the exclusion of air thereto, said polymerization being further aided by the contacting of said material with the surfaces of said metallic conductors.
Claim 2
Independent Claim
135 words
The method of making an hermetically-sealed electrical connection between two metallic conductors comprising the sequential steps of: mechanically joining the two ends of said electrical conductors to provide an electrical circuit path therethrough; disposing a heat-shrinkable dielectric sleeve about the exterior of the joined ends of said conductors; introducing an anaerobic sealant material between said sleeve and the joined ends of said conductors so as to cause it to be confined therebetween and to contact the metallic surfaces of said joined ends; and, radially shrinking said sleeve about said material, by the application of heat thereto so as to hermetically enclose said anaerobic material and cause it to polymerize by reason of the exclusion of air thereto, said polymerization being further aided by the contacting of said material with the surfaces of said metallic conductors.
Claim 3
Dependent Claim
57 words
The method as defined in claim 1 including the steps of; providing insulating jackets which extend away from the exposed ends of said electrical conductors; and disposing said sleeve so as to extend beyond the portion of said conductors in contact with said material and over at least a portion of the confronting ends of said jacket.
Claim 4
Dependent Claim
63 words
AN HERMETICALLY SEALED ELECTRICAL JOINT COMPRISING: FIRST AND SECOND ELECTRICAL CONDUCTORS WHICH HAVE BEEN JOINED TO PROVIDE A CIRCUIT PATH THERETHROUGH, A MASS OF POLYMERIZED ANAEROBIC SEALANT COVERING THE JOINED PORTION OF SAID CONDUCTORS, AND A DIELECTRIC SLEEVE OF HEAT-SHRUNK MATERIAL DISPOSED ABOUT THE OUTER SURFACE OF SAID SEALANT SO AS TO MAINTAIN THE POLYMERIZATION THEREOF BY THE EXCLUSION OF AMBIENT AIR THERETO.
Claim 5
Dependent Claim
63 words
AN HERMETICALLY SEALED ELECTRICAL JOINT COMPRISING: FIRST AND SECOND ELECTRICAL CONDUCTORS WHICH HAVE BEEN JOINED TO PROVIDE A CIRCUIT PATH THERETHROUGH, A MASS OF POLYMERIZED ANAEROBIC SEALANT COVERING THE JOINED PORTION OF SAID CONDUCTORS, AND A DIELECTRIC SLEEVE OF HEAT-SHRUNK MATERIAL DISPOSED ABOUT THE OUTER SURFACE OF SAID SEALANT SO AS TO MAINTAIN THE POLYMERIZATION THEREOF BY THE EXCLUSION OF AMBIENT AIR THERETO.
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) | 1978-06-09 | 1978-12-09 | 1979-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-09 | 1982-12-09 | 1983-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-09 | 1986-12-09 | 1987-06-10 | $7700.00 | Window Closed / Lapsed |