Patent US3774646A successfully refreshed from Google Patents.
US3774646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Line stopping assembly using an inflatable element
Assignee: Mueller Co
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Filing: 1971-11-24
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Granted: 1973-11-27
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Expires: 1991-11-24
Abstract
Abstract The disclosure embraces an apparatus for plugging a fluid conduit in which a lateral opening has been formed, the apparatus having a fitting adapted to be secured over the opening in the conduit and in which a carrier member is threadedly supported; a plug element having an inflatable member is pivotally attached to a support arm that projects through the opening in the conduit when the carrier member is installed in the fitting and a manually operable linkage arm is attached at one end to the plug element with the other end of the linkage arm extending through the carrier member exteriorly thereof; fluid passages are provided in the carrier member and plug element to permit supply of a gas under pressure to an exhaust from the inflatable member.
Inventors
- 👤 J Smith
- 👤 B Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:24
CPC Classifications
F; F16; F16K; F16K7/00; F16K7/10; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/124
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
226 words
A pipe plugging assembly for use with a fitting secured to a pipe and surrounding a lateral opening in the pipe, the fitting having an open end aligned with the pipe opening, said assembly comprising: a carrier member having means for sealingly closing the open end of the fitting including oppositely facing first and second surfaces, actuating means movable between actuated and deactuated positions, means disposed on said first surface of said carrier member for movably supporting said actuating means, an expansible pipe stopping element; support means for said pipe stopping element, means disposed on said second surface of said carrier member for pivotally mounting in a predetermined position relative to the opening in the pipe said support means for said pipe stopping element for pivotal movement between a retracted position and an operating position, said assembly having fluid passage means for supplying a fluid under pressure to said expansible pipe stopping element, said carrier member having a passage formed therethrough extending between said first and second surfaces, linkage means movably mounted in and extending through said passage in said carrier member for interconnecting said actuating means and said support means for said pipe stopping element so that, when said actuating means is moved from said deactuated position to said actuated position, said support means will be moved from said retracted position to said operating position.
Claim 2
Dependent Claim
226 words
A pipe plugging assembly for use with a fitting secured to a pipe and surrounding a lateral opening in the pipe, the fitting having an open end aligned with the pipe opening, said assembly comprising: a carrier member having means for sealingly closing the open end of the fitting including oppositely facing first and second surfaces, actuating means movable between actuated and deactuated positions, means disposed on said first surface of said carrier member for movably supporting said actuating means, an expansible pipe stopping element; support means for said pipe stopping element, means disposed on said second surface of said carrier member for pivotally mounting in a predetermined position relative to the opening in the pipe said support means for said pipe stopping element for pivotal movement between a retracted position and an operating position, said assembly having fluid passage means for supplying a fluid under pressure to said expansible pipe stopping element, said carrier member having a passage formed therethrough extending between said first and second surfaces, linkage means movably mounted in and extending through said passage in said carrier member for interconnecting said actuating means and said support means for said pipe stopping element so that, when said actuating means is moved from said deactuated position to said actuated position, said support means will be moved from said retracted position to said operating position.
Claim 3
Dependent Claim
51 words
The pipe plugging assembly as claimed in claim 1 wherein said actuating means comprises a lever arm and said means for movably supporting said actuating means comprises a post extending generally perpendicularly from said first surface of said carrier member, said lever arm having one end pivotally mounted on said post.
Claim 4
Dependent Claim
89 words
The pipe plugging assembly as claimed in claim 1 wherein said support means for said pipe stopping element comprises a pair of disks and a connecting member interconnecting said disks in fixed spaced apart relation to one another and said expansible pipe stopping element comprising a flexible ring-shaped annulus having spaced apart annular surfaces, each of said annular surfaces engaging and being supported by one of said disks, a first one of said disks being pivotally mounted on said means disposed on said second surface of said carrier member.
Claim 5
Dependent Claim
45 words
The pipe plugging assembly as claimed in claim 3 wherein said means disposed on said second surface of said carrier member for pivotally mounting said support means for said stopping element comprises a post formed integrally with said second surface and extending generally perpendicularly therefrom.
Claim 6
Dependent Claim
73 words
The pipe plugging assembly as claimed in claim 4 wherein said fluid passage means comprises a bore formed in said carrier member and extending from said first surface through said post extending generally perpendicularly from said second surface and communicating with a fluid passage formed in said first one of said disks, said passage in said first one of said disks opening onto the space defined by the interior of said flexible annulus.
Claim 7
Dependent Claim
77 words
The pipe plugging assembly as claimed in claim 1 wherein said linking means includes an elongated shaft having spaced aPart ends, one of said ends being connected to said actuating means, the other end of said shaft being connected to said support means for said pipe stopping element through an arm having one end pivotally connected to said other end of said shaft and the other end of said arm being pivotally connected to said supporting means.
Claim 8
Dependent Claim
77 words
The pipe plugging assembly as claimed in claim 6 wherein said first surface of said carrier member has a tubular guide formed integrally therewith and extending generally perpendicularly therefrom about said passage formed through said carrier member, said shaft being located in said tubular guide and movable relative thereto, said tubular guide having an interior surface, an annular groove formed in said interior surface, and sealing means carried in said groove in sealing engagement with said shaft.
Claim 9
Dependent Claim
21 words
The pipe plugging assembly as claimed in claim 1 including locking means for retaining said actuating means in said actuated position.
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) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |