Patent US5473513A successfully refreshed from Google Patents.
US4164243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Welded joint in segmented sheath for compressed gas insulated transmission lines
Assignee: Electric Power Research Institute
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Filing: 1977-03-18
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Granted: 1979-08-14
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Expires: 1997-03-18
Abstract
Abstract A weld-joint in a segmented sheath of a large diameter, high voltage, compressed gas insulated transmission line includes longitudinal, radially aligned outer margins forming a longitudinal seam of joined sheath sections, an internally disposed recess offset from the joined margins, a longitudinal tongue overlapping the joined outer margins and mating with the recess, and a longitudinal sealing gasket, preferably an elastomeric tube, disposed in the region between the tongue and the tongue-receiving recess. A hollowed cutaway section is provided within the joint and aligned with the radial margins to form an enclosed cavity. A longitudinal ridge is provided along the sealing gasket for spacing and protecting the gasket. The end of the tongue and the adjacent walls of the internally disposed recess form together a Vee grove for trapping loose particles internal of the tubular enclosure formed by the joined sheath sections. The enclosed cavity and sealing gasket promote a strong, full penetration weld along the seam.
Inventors
- 👤 Alan H. Cookson
- 👤 Philip C. Bolin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:09
CPC Classifications
H; H02; H02G; H02G5/00; H02G5/06; H02G5/063; F; F16; F16L; F16L9/00; F16L9/22
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
183 words
A weld joint in an arcuate segmented sheath of a compressed gas insulated transmission line for joining first and second sheath sections having interior and exterior walls along confronting longitudinal edges, said joint comprising: a first longitudinal margin adjacent said exterior wall of said first second having a face generally parallel with a radial line through a longitudinal axis at the center of curvature of said segmented sheath; a longitudinal recess offset from said first margin along said interior wall, said recess including a circumferential base wall; a second longitudinal margin adjacent said exterior wall of said second section having a face generally parallel with a radial line through a longitudinal axis at the center of curvature of said segmented sheath to abut to said first margin; a tongue extending circumferentially from said second section and having one face to confront to said face wall; sealing means comprising a tubular elastomeric sealing gasket longitudinally disposed between said recess and said tongue; and, a longitudinal ridge adjacent said sealing gasket for preventing the flattening of said sealing gasket between said tongue and said recess.
Claim 2
Dependent Claim
183 words
A weld joint in an arcuate segmented sheath of a compressed gas insulated transmission line for joining first and second sheath sections having interior and exterior walls along confronting longitudinal edges, said joint comprising: a first longitudinal margin adjacent said exterior wall of said first second having a face generally parallel with a radial line through a longitudinal axis at the center of curvature of said segmented sheath; a longitudinal recess offset from said first margin along said interior wall, said recess including a circumferential base wall; a second longitudinal margin adjacent said exterior wall of said second section having a face generally parallel with a radial line through a longitudinal axis at the center of curvature of said segmented sheath to abut to said first margin; a tongue extending circumferentially from said second section and having one face to confront to said face wall; sealing means comprising a tubular elastomeric sealing gasket longitudinally disposed between said recess and said tongue; and, a longitudinal ridge adjacent said sealing gasket for preventing the flattening of said sealing gasket between said tongue and said recess.
Claim 3
Dependent Claim
42 words
A weld joint according to claim 1 wherein said recess includes a side wall overhanging said base wall and wherein said tongue includes a top margin facing said side wall to define a longitudinal particle trap in communication with said interior wall.
Claim 4
Dependent Claim
16 words
A weld joint according to claim 1 wherein said sealing gasket is a silicone rubber tube.
Claim 5
Dependent Claim
31 words
A weld joint according to claim 1 further including a resilient sealing means longitudinally disposed between said tongue face and said base wall for blocking weld splatter from said interior walls.
Claim 6
Dependent Claim
31 words
A weld joint according to claim 1 wherein said longitudinal ridge is disposed adjacent said sealing gasket for preventing the flattening of said sealing gasket between said tongue and said recess.
Claim 7
Dependent Claim
31 words
A weld joint according to claim 5 wherein said longitudinal ridge is disposed between said sealing gasket and said cavity for shielding said sealing gasket from a site of weld irradiation.
Claim 8
Dependent Claim
70 words
A weld joint according to claim 1 further including a stepped overhang at a junction between said second margin and said tongue to define a cavity in radial alignment with said first and second margins and in communication with a channel formed by said base wall and said tongue, and a full penetration butt weld along said first and second margins forming a longitudinal weld seam between said sheath sections.
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) | 1982-08-13 | 1983-02-12 | 1983-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-08-13 | 1987-02-12 | 1987-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-08-13 | 1991-02-12 | 1991-08-14 | $7700.00 | Window Closed / Lapsed |