US4237937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for sealing damaged tubular members
Assignee: Quabbin Industries Inc
•
Filing: 1979-03-12
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Granted: 1980-12-09
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Expires: 1999-03-12
Abstract
Abstract The present invention relates to a new improved device for sealing damaged tubular members by using a readily removable cylindrically configurated member which is disposed securely within open end sections of the tubular member. The present device includes a projecting end portion which is insertable into the damaged tubular member and which is connected integrally to a sleeve portion configurated externally with tube engaging projections and internally with a retraction device for removing the device when tube repairs are effected. The device of the present invention thus provides a useful means for sealing damaged tubular members of a multi-tubular unit without requiring complete shut-down each time an individual tubular member becomes damaged or inoperable.
Inventors
- 👤 Robert D. Healy, Sr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:04
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/11; F28; F28F; F28F11/00; F28F11/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49945
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
116 words
In a tubular member having a sealing device disposed securely within an open section thereof, the improvement wherein the sealing device comprising in combination: (A) a hollow sleeve dimensioned and configurated to approximate the inner diameter of the tubular member to be sealed; (B) a projecting cylindrically configurated member having an outer diameter smaller than the outer diameter of the hollow sleeve and integrally disposed to the outer diameter hollow sleeve by an inwardly tapered flange; and (C) at least one circumferentially disposed rib positioned about the hollow sleeve for contact with the inner diameter of the tubular member; (D) said hollow sleeve containing a retraction means disposed within the tapered flange portion of the device.
Claim 2
Dependent Claim
116 words
In a tubular member having a sealing device disposed securely within an open section thereof, the improvement wherein the sealing device comprising in combination: (A) a hollow sleeve dimensioned and configurated to approximate the inner diameter of the tubular member to be sealed; (B) a projecting cylindrically configurated member having an outer diameter smaller than the outer diameter of the hollow sleeve and integrally disposed to the outer diameter hollow sleeve by an inwardly tapered flange; and (C) at least one circumferentially disposed rib positioned about the hollow sleeve for contact with the inner diameter of the tubular member; (D) said hollow sleeve containing a retraction means disposed within the tapered flange portion of the device.
Claim 3
Dependent Claim
20 words
The device of claim 1 wherein three ribs are disposed approximately equidistant apart about the outer surface of the sleeve.
Claim 4
Dependent Claim
16 words
The device of claim 1 wherein a bore is disposed within the projecting cylindrically configurated member.
Claim 5
Dependent Claim
14 words
The device of claim 1 wherein the retraction means is defined by machined threads.
Claim 6
Dependent Claim
42 words
A method for removably sealing a damaged tubular member which comprises, inserting the device of claim 1 into opposite open ends of the tubular member, and thereafter removing said device by using the retraction means when tubular member repairs are being effected.
References Cited (Backward Citations)
US73439A
Cited
US145631A
Cited
US188625A
Cited
US791351A
Cited
US2329801A
Cited
GB670409A
Cited
US2764184A
Cited
US2856963A
Cited
US3020929A
Cited
US3119177A
Cited
US3708098A
Cited
US3691609A
Cited
US3785291A
Cited
US3900939A
Cited
US4019541A
Cited
US4178966A
Cited
US4158370A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-09 | 1984-06-09 | 1984-12-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-09 | 1988-06-09 | 1988-12-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-09 | 1992-06-09 | 1992-12-09 | $7700.00 | Window Closed / Lapsed |