US3586056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe plug
Assignee: Individual
•
Filing: 1969-05-16
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Granted: 1971-06-22
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Expires: 1989-05-16
Abstract
Abstract A pipe plug that is of a generally cylindrical character and has a cylindrical outer surface provided with a flat faced rib extending perpendicularly to the cylindrical surface at one margin of it. A passage extends through the body portion for fluid. Tubular extensions on the body portion are threaded for connection of a cap or of a flexible hose or similar conduit thereto. A clamping member in the form of an annular follower that is L-shaped in cross section has a portion that extends over and surrounds the cylindrical outer surface of the body portion, and a portion that extends inwardly from this portion that is adjustable relative to the body portion by bolts or similar screw-threaded fastening means. A pair of compressible sealing rings with a spacer ring between them, are mounted between the rib and the follower to be compressed by the follower when drawn toward the body portion by the bolts to distort them into sealing engagement with the inner cylindrical surface of a pipe, the plug being entirely inside the pipe with no modification of the pipe or any attachments to the pipe being required for mounting the plug in sealing position in the pipe.
Inventors
- 👤 Fred L Kipp
- 👤 William L Woodside
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 15:38
CPC Classifications
F; F16; F16L; F16L55/00; F16L55/10; F16L55/12; F16L55/128; F16L55/132
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
128 words
A pipe plug having a body portion having a cylindrical outer surface, an abutment projecting outwardly from the outer surface of said body portion, a follower having a cylindrical portion mounted on said outer surface of said body portion for movement toward and away from said abutment, said cylindrical portion of said follower surrounding said outer surface of said body portion in slightly spaced relation thereto, compressible sealing means mounted on said surface of said body portion in embracing relation thereto between said abutment and follower, said sealing means projecting radially outwardly beyond said abutment of selflocking means for moving said follower toward said abutment, said body portion has externally threaded tubular portions extending therefrom and a fluid passage extending through said body portion and said tubular portions.
Claim 2
Dependent Claim
128 words
A pipe plug having a body portion having a cylindrical outer surface, an abutment projecting outwardly from the outer surface of said body portion, a follower having a cylindrical portion mounted on said outer surface of said body portion for movement toward and away from said abutment, said cylindrical portion of said follower surrounding said outer surface of said body portion in slightly spaced relation thereto, compressible sealing means mounted on said surface of said body portion in embracing relation thereto between said abutment and follower, said sealing means projecting radially outwardly beyond said abutment of selflocking means for moving said follower toward said abutment, said body portion has externally threaded tubular portions extending therefrom and a fluid passage extending through said body portion and said tubular portions.
Claim 3
Dependent Claim
61 words
The pipe plug claimed in claim 1 in which said abutment is an annular rib extending radially outwardly from said outer surface at one margin thereof having a flat face projecting perpendicularly outwardly from said outer surface, said follower is a rigid ring having a flat face directed toward the flat face of said rib and said sealing means is annular.
Claim 4
Dependent Claim
86 words
The pipe plug claimed in claim 1 in which said abutment is an annular rib extending radially outwardly from said outer surface at one margin thereof having a flat face projecting perpendicularly outwardly from said outer surface, said follower is a rigid ring having a portion extending pArallel to the axis of said cylindrical surface and a portion extending inwardly toward said axis therefrom, said first mentioned portion having a flat face directed toward the flat face of said rib and said sealing means is annular.
Claim 5
Dependent Claim
105 words
The pipe plug claimed in claim 1 in which said abutment is an annular rib extending radially outwardly from said outer surface at one margin thereof having a flat face projecting perpendicularly outwardly from said outer surface, said follower is a rigid ring having a portion extending parallel to the axis of said cylindrical surface and a portion extending inwardly toward said axis therefrom, said first mentioned portion having a flat face directed toward the flat face of said rib and said sealing means is annular, and said self-locking means comprises a plurality of screw-threaded members connecting said inwardly extending portions with said body portion.
Claim 6
Dependent Claim
160 words
The combination with a pipe having a substantially cylindrical inner surface of a plug mounted entirely within said pipe, said plug having a body portion having a cylindrical outer surface spaced inwardly from the inner surface of said pipe, an abutment projecting from said outer surface of said body portion, a follower having a cylindrical portion mounted on said body portion between said inner surface of said pipe and said outer surface of said body portion, said cylindrical portion of said follower surrounding said outer surface of said body portion in slightly spaced relation thereto, compressible sealing means mounted on said surface of said body portion in embracing relation thereto between said abutment and follower, said sealing means projecting radially outwardly beyond said abutment, and means for squeezing said sealing means between said abutment and said follower, said body portion has externally threaded tubular portions extending therefrom and a fluid passage extending through said body portion and said tubular portions.
Claim 7
Dependent Claim
160 words
The combination with a pipe having a substantially cylindrical inner surface of a plug mounted entirely within said pipe, said plug having a body portion having a cylindrical outer surface spaced inwardly from the inner surface of said pipe, an abutment projecting from said outer surface of said body portion, a follower having a cylindrical portion mounted on said body portion between said inner surface of said pipe and said outer surface of said body portion, said cylindrical portion of said follower surrounding said outer surface of said body portion in slightly spaced relation thereto, compressible sealing means mounted on said surface of said body portion in embracing relation thereto between said abutment and follower, said sealing means projecting radially outwardly beyond said abutment, and means for squeezing said sealing means between said abutment and said follower, said body portion has externally threaded tubular portions extending therefrom and a fluid passage extending through said body portion and said tubular portions.
Claim 8
Dependent Claim
28 words
The combination claimed in claim 5 in which said means for squeezing said sealing means comprises a plurality of screw-threaded members connecting said follower with said body portion.
Claim 9
Dependent Claim
38 words
The pipe plug claimed in claim 1 in which said tubular portions and said fluid passage are provided by a pipe extending through said body portion having externally threaded portions projecting from opposite sides of said body portion.
Claim 10
Dependent Claim
38 words
The pipe plug claimed in claim 5 in which said tubular portions and said fluid passage are provided by a pipe extending through said body portion having externally threaded portions projecting from opposite sides of said body portion.
Claim 11
Dependent Claim
60 words
The combination claimed in claim 5 in which said abutment is an annular rib extending radially outwardly from said outer surface at one margin thereof having a flat face projecting perpendicularly outwardly from said outer surface, said follower is a rigid ring having a flat face directed toward the flat face of said rib and said sealing means is annular.
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) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |