US4507954A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wraparound used for testing tubing with premixed gases
Assignee: TUBING TESTORS Inc A LA CORP
•
Filing: 1983-06-27
•
Granted: 1985-04-02
•
Expires: 2003-06-27
Abstract
Abstract A pipe joint testing device for testing the joint integrity of two connected pipe sections, each having a bore and pressurized with gas at the joint area during testing uses an annular envelope which can be affixed about the annular external joint of two pipe sections being tested. An inner annular header having a gas inlet with openings which communicate circumferentially with the envelope is provided internally of the envelope. A suction line is connected to the header at a tee connection, for example, for drawing gas from the envelope through the openings. In this manner, any gas leaking from the joint at any radial position along the joint will be detected because it will enter through one of the openings in the header.
Inventors
- 👤 Johnie R. Boutwell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:07
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/04; G01M3/20; G01M3/22; G01M3/223
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
151 words
A pipe joint testing device for testing the joint integrity of two connected pipe sections, each having a bore pressurized with a test gas which is lighter than air at the joint during testing comprising: a. an annular envelope having means for affixing the envelope to the annular external joint of two pipe sections being tested; b. an annular header positioned within the envelope and above the joint being tested during operation and having gas inlet openings which are radially spaced about the joint being tested so that the openings can communicated circumferentially with the envelope above the joint to receive gas leaking from the joint at any radial position of the joint; and c. suction connection means for drawing gas from the envelope through the openings into the header so that test gas leaking from any radial position of the external annular pipe joint will rise and enter the header.
Claim 2
Dependent Claim
151 words
A pipe joint testing device for testing the joint integrity of two connected pipe sections, each having a bore pressurized with a test gas which is lighter than air at the joint during testing comprising: a. an annular envelope having means for affixing the envelope to the annular external joint of two pipe sections being tested; b. an annular header positioned within the envelope and above the joint being tested during operation and having gas inlet openings which are radially spaced about the joint being tested so that the openings can communicated circumferentially with the envelope above the joint to receive gas leaking from the joint at any radial position of the joint; and c. suction connection means for drawing gas from the envelope through the openings into the header so that test gas leaking from any radial position of the external annular pipe joint will rise and enter the header.
Claim 3
Dependent Claim
33 words
The pipe testing device of claim 1 wherein the envelope is a unitary collar having upper and lower shoulders with inner annular sealing surfaces that form a seal with the pipe being tested.
Claim 4
Dependent Claim
16 words
The pipe testing device of claim 2 wherein the header is positioned adjacent the upper shoulders.
Claim 5
Dependent Claim
38 words
The pipe testing device of claim 2 wherein the collar has a vertical cut extending between the sealing surfaces so that the collar can be radially expanded to assemble/disassamble the collar about a pipe joint to be tested.
Claim 6
Dependent Claim
31 words
The pipe testing device of claim 2 further comprising temporary closure means for securing the collar to a pair of connected pipe sections about the pipe joint between the two sections.
Claim 7
Dependent Claim
20 words
The pipe testing device of claim 1 wherein the suction connection means is a tee mounted within the annular header.
References Cited (Backward Citations)
US2062435A
Cited
US1997987A
Cited
US2567926A
Cited
US2706398A
Cited
US2766614A
Cited
US2996661A
Cited
US3280619A
Cited
US3592048A
Cited
US3585845A
Cited
US3690151A
Cited
US3712115A
Cited
US3762212A
Cited
US3837228A
Cited
DE2329525A1
Cited
US3949596A
Cited
US4282743A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-04-01 | 1988-10-01 | 1989-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-04-01 | 1992-10-01 | 1993-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-04-01 | 1996-10-01 | 1997-04-02 | $7700.00 | Window Closed / Lapsed |