US4706482A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Permanently-installed test fitting
Assignee: Individual
•
Filing: 1986-07-28
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Granted: 1987-11-17
•
Expires: 2006-07-28
Abstract
Abstract An apparatus is provided for pressure testing pipe and fittings systems. A seal has a disk portion and a flange portion. The seal is permanently attached to the inside of a fitting on the distal end of the pipe section to be tested, thereby blocking fluid flow. The section is installed and tested by conventional means. After testing, a pull-tab formed in the seal is removed to permit fluid flow through the seal. Subsequent sections can then be installed and tested.
Inventors
- 👤 John C. Barber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 08:59
CPC Classifications
G; G01; G01M; G01M3/00; G01M3/02; G01M3/022; G01M3/26; G01M3/28; G01M3/2853; Y; Y10; Y10S; Y10S277/00; Y10S277/917
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
128 words
A test fitting for use in pressure testing pipe and fitting systems during the installation thereof, comprising: a water impermeable barrier adapted to block fluid flow through said pipe and fitting system; means for sealably and permanently installing said barrier into a fitting in said pipe and fitting systems, said means for installing comprising elastic, fluid resistant means about the periphery of the barrier adapted to press outwardly from the barrier and seal the barrier against an interior wall of said fitting; and, frangible, removable seal means in said barrier permitting fluid flow therethrough when broken and removed, a portion of said barrier remaining in said fitting in said pipe and fitting systems, said portion of said barrier being insufficient to substantially impede fluid flow through said fitting.
Claim 2
Dependent Claim
128 words
A test fitting for use in pressure testing pipe and fitting systems during the installation thereof, comprising: a water impermeable barrier adapted to block fluid flow through said pipe and fitting system; means for sealably and permanently installing said barrier into a fitting in said pipe and fitting systems, said means for installing comprising elastic, fluid resistant means about the periphery of the barrier adapted to press outwardly from the barrier and seal the barrier against an interior wall of said fitting; and, frangible, removable seal means in said barrier permitting fluid flow therethrough when broken and removed, a portion of said barrier remaining in said fitting in said pipe and fitting systems, said portion of said barrier being insufficient to substantially impede fluid flow through said fitting.
Claim 3
Dependent Claim
57 words
The test fitting of claim 1, wherein said means for installing said barrier comprises a support ring encircling and engaging the perimeter of said barrier, said elastic means being provided on the outer periphery of said support ring, whereby said support ring is adapted for fixed attachment to an interior wall of said pipe and fitting system.
Claim 4
Dependent Claim
22 words
The test fitting of claim 2, wherein said elastic means comprises an elastomeric o-ring mounted about the periphery of said support ring.
Claim 5
Dependent Claim
19 words
The test fitting of claim 3, wherein said o-ring is mounted in a channel formed in said support ring.
Claim 6
Dependent Claim
39 words
The test fitting of claim 2, wherein said elastic means comprises a plurality of fins mounted circumferentially about said support ring, said fins beign adapted to press radially outwardly against the interior wall of said pipe and fitting system.
Claim 7
Dependent Claim
21 words
The test fitting of claim 1, wherein said seal means comprises a scribe-out formed defining a loop, formed in said barrier.
Claim 8
Dependent Claim
20 words
The test fitting of claim 6, wherein said scribe cut is substantially coincident with an inside circumference of said pipe.
Claim 9
Dependent Claim
22 words
The test fitting of claim 6, wherein said seal means further comprises means for transmitting a manual force to said scribe cut.
Claim 10
Dependent Claim
32 words
The test fitting of claim 8, wherein said means for transmitting a manual force to said scribe cut comprises a ring secured to said seal means adjacent part of said scribe cut.
Claim 11
Dependent Claim
15 words
The test fitting of claim 9, wherein said scribe cut is deeper nearest said ring.
Claim 12
Dependent Claim
14 words
The test fitting of claim 1, wherein said seal means further comprises strengthening means.
Claim 13
Dependent Claim
103 words
A test fitting for use in pressure testing pipe and fitting systems during the installation thereof, comprising: a water impermeable barrier adapted to block fluid flow through said pipe and fitting system; means for sealably and permanently installing said barrier into a fitting in said pipe and fitting system; means for selectively bleeding water past said barrier; and, frangible, removable seal means in said barrier permitting fluid flow therethrough when broken and removed, a portion of said barrier remaining in said fitting in said pipe and fitting system, said portion of said barrier being insufficient to substantially impede fluid flow through said fitting.
Claim 14
Dependent Claim
103 words
A test fitting for use in pressure testing pipe and fitting systems during the installation thereof, comprising: a water impermeable barrier adapted to block fluid flow through said pipe and fitting system; means for sealably and permanently installing said barrier into a fitting in said pipe and fitting system; means for selectively bleeding water past said barrier; and, frangible, removable seal means in said barrier permitting fluid flow therethrough when broken and removed, a portion of said barrier remaining in said fitting in said pipe and fitting system, said portion of said barrier being insufficient to substantially impede fluid flow through said fitting.
Claim 15
Dependent Claim
36 words
The test fitting of claim 12, wherein said bleeding means comprises nipple means fixed to said barrier and having a passageway therethrough, and valve means associated with said nipple means to stop flow through the passageway.
Claim 16
Dependent Claim
28 words
The test fitting of claim 13, further comprising conduit means connected to said nipple means and adapted to pass fluid from said nipple means out of said fitting.
Claim 17
Dependent Claim
17 words
The test fitting of claim 13, wherein said nipple means is detachable with respect to said barrier.
Claim 18
Dependent Claim
56 words
The test fitting of claim 15, wherein said nipple means includes thread structure on an exterior surface thereof, barrier engagement structure secured to said threaded structure, and nut means on a side of said nipple opposite the barrier engagement structure and adapted to threadably engage said barrier between said barrier engagement structure and said nut means.
Claim 19
Dependent Claim
17 words
The test fitting of claim 16, further comprising seal means between said nut means and said barrier.
Claim 20
Dependent Claim
14 words
The test fitting of claim 17, wherein said seal means comprises a rubber washer.
References Cited (Backward Citations)
US2553267A
Cited
US3467120A
Cited
US3605947A
Cited
US3921556A
Cited
US3941156A
Cited
US4044798A
Cited
US4139005A
Cited
US4289169A
Cited
US4329857A
Cited
US4376597A
Cited
US4460019A
Cited
US4429568A
Cited
US4402516A
Cited
US4542642A
Cited
US4607664A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-11-16 | 1991-05-18 | 1991-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-16 | 1995-05-18 | 1995-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-16 | 1999-05-18 | 1999-11-17 | $7700.00 | Window Closed / Lapsed |