US3671622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of forming seal for multi-wire strand
Assignee: Bethlehem Steel Corp
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Filing: 1970-11-13
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Granted: 1972-06-20
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Expires: 1990-11-13
Abstract
Abstract A short length of a multi-wire strand is surrounded with a mold to provide an annular space about said length. Said space is filled with a thermosetting plastic sealant and pressure is applied to force said sealant into and along the interstices of said strand. During said application of pressure, the strand is circumferentially heated at the ends of said mold to provide a radial temperature gradient across said ends. Pressure is applied to said sealant until the ends of the seal are substantially convex.
Inventors
- 👤 Darral V Humphries
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:37
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/20; D; D07; D07B; D07B9/00; E; E01; E01D; E01D19/00; E01D19/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
29 words
The improvement as recited in claim 1, in which said radial temperature gradient is applied to said strand by circumferentially heating said strand at the ends of said mold.
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) | 1975-06-20 | 1975-12-20 | 1976-06-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-20 | 1979-12-20 | 1980-06-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-20 | 1983-12-20 | 1984-06-20 | $7700.00 | Window Closed / Lapsed |