Patent US4377547A successfully refreshed from Google Patents.
US4377547A
Expired / Lapsed
US
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Molded high voltage splice body
Assignee: 3M Co
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Filing: 1982-01-18
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Granted: 1983-03-22
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Expires: 2002-01-18
Abstract
Abstract A method for making a molded high voltage splice body by positioning a conductive elastomeric electrode on a mandrel, positioning an extruded conductive elastomeric sleeve over the elastomeric electrode, sealing the ends of the elastomeric sleeve, placing the mandrel with the electrode and sleeve on it into a mold, injecting a curable insulating compound between the electrode and the sleeve under pressure and curing the insulating compound.
Inventors
- 👤 Harold C. Hervig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:49
CPC Classifications
H; H02; H02G; H02G15/00; H02G15/08; H02G15/18; H02G15/184; H02G15/10; H02G15/103; B; B29; B29C; B29C70/00; B29C70/68; B29C70/74; B29C70/745; H02G1/00; H02G1/14; H02G1/145; B29C45/00; B29L; B29L2031/00; B29L2031/34; B29L2031/3406
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
123 words
A method for making a molded high voltage splice body comprising the steps of positioning a conductive elastomeric electrode on a mandrel, providing an extruded, resiliently expandable, conductive elastomeric sleeve with a reinforced injection insert, positioning the elastomeric sleeve over the elastomeric electrode on the mandrel, sealing the ends of the elastomeric sleeve around the mandrel, placing the mandrel with the electrode and sleeve on it into a mold, injecting a curable insulating compound through the reinforced injection insert between the electrode and the sleeve under pressure to expand the sleeve against the interior of the mold and to force the insulating compound into intimate contact with the exterior of the electrode and the interior of the sleeve, and curing the insulating compound.
Claim 2
Independent Claim
123 words
A method for making a molded high voltage splice body comprising the steps of positioning a conductive elastomeric electrode on a mandrel, providing an extruded, resiliently expandable, conductive elastomeric sleeve with a reinforced injection insert, positioning the elastomeric sleeve over the elastomeric electrode on the mandrel, sealing the ends of the elastomeric sleeve around the mandrel, placing the mandrel with the electrode and sleeve on it into a mold, injecting a curable insulating compound through the reinforced injection insert between the electrode and the sleeve under pressure to expand the sleeve against the interior of the mold and to force the insulating compound into intimate contact with the exterior of the electrode and the interior of the sleeve, and curing the insulating compound.
Claim 3
Dependent Claim
35 words
The method of claim 1 wherein said step of sealing the ends of the elastomeric sleeve comprises placing a pair of molded elastomeric end caps on the mandrel, one at each end of the sleeve.
Claim 4
Dependent Claim
37 words
The method of claim 1 wherein the electrode is an extruded elastomeric sleeve and said step of injecting a curable insulating compound forces the material of the electrode to conform to the exterior shape of the mandrel.
References Cited (Backward Citations)
US2312993A
Cited
US3015855A
Cited
US3135640A
Cited
US3184528A
Cited
US3377657A
Cited
US3561079A
Cited
US3651180A
Cited
US3607494A
Cited
NL7017737A
Cited
US4113825A
Cited
US4285896A
Cited
US4241004A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |