US4675987A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of sealing a relay
Assignee: Alcatel Lucent NV
•
Filing: 1984-03-07
•
Granted: 1987-06-30
•
Expires: 2004-03-07
Abstract
Abstract A relay is sealed with a sealing compound when the relay housing is in a closed state, thus causing an air cushion to be formed in the inside, with an afterflow of sealing compound into the interior being prevented. Following gelling or curing of the sealing compound, a vent hole is pierced into the relay housing which, if required, may be closed following degassing of the interior space of the relay.
Inventors
- 👤 Werner Minks
- 👤 Bernard F. Nitschke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:21
CPC Classifications
H; H01; H01H; H01H50/00; H01H50/02; H01H50/023; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/4902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A method for sealing an electromagnetic rely which includes a housing comprising: placing a cover over the relay housing and placing a curable sealing material, which emits vapors at a time prior to curing, between adjacent portions of the cover and housing to seal them, wherein the space between the cover and housing is substantially gas tight to resist the flow of sealing material into said space; curing the sealing material at least partially; thereafter forming a vent hole in the cover, removing most of the original atmosphere in said space, including vapors of said sealing material, and sealing said vent hole, said step of removing including heating said relay and cover to a temperature of over 120° C.
Claim 2
Independent Claim
119 words
A method for sealing an electromagnetic rely which includes a housing comprising: placing a cover over the relay housing and placing a curable sealing material, which emits vapors at a time prior to curing, between adjacent portions of the cover and housing to seal them, wherein the space between the cover and housing is substantially gas tight to resist the flow of sealing material into said space; curing the sealing material at least partially; thereafter forming a vent hole in the cover, removing most of the original atmosphere in said space, including vapors of said sealing material, and sealing said vent hole, said step of removing including heating said relay and cover to a temperature of over 120° C.
References Cited (Backward Citations)
US2092445A
Cited
US2522062A
Cited
DE843350C
Cited
US2810889A
Cited
US3040117A
Cited
US4035909A
Cited
DE2618492A1
Cited
US4350856A
Cited
US4062469A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-06-29 | 1990-12-29 | 1991-06-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-29 | 1994-12-29 | 1995-06-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-29 | 1998-12-29 | 1999-06-30 | $7700.00 | Window Closed / Lapsed |