US3746370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing device for nipples
Assignee: Sunoco Inc
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Filing: 1972-06-01
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Granted: 1973-07-17
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Expires: 1992-06-01
Abstract
Abstract A device for sealing leaks around pressure-tap nipples in a main pipeline without removing the line from service, comprising a split saddle having a bushing surrounding the nipple and clamped to the pipe by means of a band surrounding the pipe and overlying the saddle. Packing is inserted between the bushing and the nipple, and this packing is compressed into a sealing position by means of a split packing gland which surrounds the nipple and is drawn down onto the packing by means of upstanding studs secured to the saddle and passing through the packing gland.
Inventors
- 👤 G Aulisa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:45
CPC Classifications
F; F16; F16L; F16L41/00; F16L41/08; F16L41/12; F16L55/00; F16L55/16; F16L55/179
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
245 words
A sealing device for a nipple which extends outwardly through a pipe flange, comprising a saddle member having a pad portion adapted to overlie the outside of said flange and also having a cylindrical bushing adapted to surround said nipple, said saddle member being split into two halves; means for detachably securing together the two halves of said saddle member, thereby to form in effect a unitary member; a split gasket positioned Between the outside of said flange and said saddle pad portion, surrounding said nipple, packing means positioned between the inner wall of said bushing and the outside of said nipple, a packing gland having a portion closely surrounding said nipple, said gland portion being movable to engage said packing means and to cause it to provide a seal in the annular space between said bushing and the outside of said nipple, said packing gland being split into two halves; means for detachably securing together the two halves of said packing gland, thereby to form in effect a unitary gland; threaded elements coupling said packing gland to said saddle pad portion, thereby to enable said gland portion to be moved into seal-providing engagement with said packing means; two separate aligned arcuate members extending circumferentially around said flange, in tight engagement with the outer surface thereof, one end of each of said last-mentioned members engaging respective threaded elements on said saddle pad portion; and means fastening together the other ends of the two last-mentioned members.
Claim 2
Dependent Claim
245 words
A sealing device for a nipple which extends outwardly through a pipe flange, comprising a saddle member having a pad portion adapted to overlie the outside of said flange and also having a cylindrical bushing adapted to surround said nipple, said saddle member being split into two halves; means for detachably securing together the two halves of said saddle member, thereby to form in effect a unitary member; a split gasket positioned Between the outside of said flange and said saddle pad portion, surrounding said nipple, packing means positioned between the inner wall of said bushing and the outside of said nipple, a packing gland having a portion closely surrounding said nipple, said gland portion being movable to engage said packing means and to cause it to provide a seal in the annular space between said bushing and the outside of said nipple, said packing gland being split into two halves; means for detachably securing together the two halves of said packing gland, thereby to form in effect a unitary gland; threaded elements coupling said packing gland to said saddle pad portion, thereby to enable said gland portion to be moved into seal-providing engagement with said packing means; two separate aligned arcuate members extending circumferentially around said flange, in tight engagement with the outer surface thereof, one end of each of said last-mentioned members engaging respective threaded elements on said saddle pad portion; and means fastening together the other ends of the two last-mentioned members.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |