Patent US4582449A successfully refreshed from Google Patents.
US4582449A
Expired / Lapsed
US
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Manhole sealing device
Assignee: CITY OF MILWAUKEE A MUNICIPALITY OF WI
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Filing: 1982-12-17
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Granted: 1986-04-15
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Expires: 2002-12-17
Abstract
Abstract A manhole sealing device and method for sealing a frame-chimney joint between a manhole chimney and a manhole cover frame. The device comprises an annular ring defining a narrow annular space adjacent the frame and the chimney and across the frame-chimney joint, and a flexible water resistant cement filling the annular space and adhering to the annular ring, the frame and the chimney. In one embodiment of the invention, the ring is comprised of a plurality of segments. The ring segments are held together by slip joints and the ring includes an expansion joint to permit the adjustment of the annular space. The annular ring further includes a plurality of horizontal retainers secured in the frame-chimney joint for securing the ring adjacent the frame and the chimmey.
Inventors
- 👤 Gilbert Vosswinkel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 11:52
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/12; E02D29/14
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
86 words
A manhole sealing device for sealing a frame-chimney joint between a manhole chimney and a manhole cover frame, said device comprising means spanning said frame-chimney joint and defining a narrow annular space adjacent the frame and the chimney and across the frame-chimney joint, said means defining an annular space adjacent the frame and the chimney comprising an annular ring including a plurality of segments, and a flexible, water resistant cement filling said annular space and adhering to said space defining means, the frame, and the chimney.
Claim 2
Dependent Claim
86 words
A manhole sealing device for sealing a frame-chimney joint between a manhole chimney and a manhole cover frame, said device comprising means spanning said frame-chimney joint and defining a narrow annular space adjacent the frame and the chimney and across the frame-chimney joint, said means defining an annular space adjacent the frame and the chimney comprising an annular ring including a plurality of segments, and a flexible, water resistant cement filling said annular space and adhering to said space defining means, the frame, and the chimney.
Claim 3
Dependent Claim
18 words
A manhole sealing device according to claim 1 wherein said ring segments are held together by slip joints.
Claim 4
Dependent Claim
24 words
A manhole sealing device according to claim 1 wherein said annular ring includes an expansion joint to permit the adjustment of said annular space.
Claim 5
Dependent Claim
38 words
A manhole sealing device according to claim 1 wherein said annular ring further includes means for securing said ring adjacent the frame and the chimney, said means comprising a plurality of horizontal retainers located in the frame-chimney joint.
Claim 6
Dependent Claim
21 words
A manhole sealing device according to claim 1 and further including means for holding said flexible, water resistant cement in place.
Claim 7
Dependent Claim
41 words
A manhole sealing device in accordance with claim 1 wherein said means defining a narrow annular space adjacent the frame and the chimney and across the frame-chimney joint defines said annular space adjacent the inside of the frame and the chimney.
Claim 8
Dependent Claim
104 words
A manhole sealing device for sealing a frame-chimney joint between a manhole chimney and a manhole cover frame, said device comprising means spanning the frame-chimney joint and defining a narrow annular space adjacent the frame and the chimney and across the frame-chimney joint, said space defining means comprising an annular ring with a lower edge, a flexible, water resistant cement filling said annular space and adhering to said space defining means, the frame and the chimney, and means for holding said flexible, water resistant cement in place, said holding means comprising a dam extending radially outwardly from said lower edge of said annular ring.
Claim 9
Dependent Claim
104 words
A manhole sealing device for sealing a frame-chimney joint between a manhole chimney and a manhole cover frame, said device comprising means spanning the frame-chimney joint and defining a narrow annular space adjacent the frame and the chimney and across the frame-chimney joint, said space defining means comprising an annular ring with a lower edge, a flexible, water resistant cement filling said annular space and adhering to said space defining means, the frame and the chimney, and means for holding said flexible, water resistant cement in place, said holding means comprising a dam extending radially outwardly from said lower edge of said annular ring.
Claim 10
Dependent Claim
38 words
A manhole sealing device according to claim 7 wherein said annular ring further includes means for securing said ring adjacent the frame and the chimney, said means comprising a plurality of horizontal retainers located in the frame-chimney joint.
Claim 11
Dependent Claim
21 words
A manhole sealing device according to claim 7 and further including means for holding said flexible water resistant cement in place.
Claim 12
Dependent Claim
41 words
A manhole sealing device in accordance with claim 7 wherein said means defining a narrow annular space adjacent the frame and the chimney and across the frame-chimney joint defines said annular space adjacent the inside of the frame and the chimney.
Claim 13
Dependent Claim
90 words
A manhole sealing device for sealing a frame-chimney joint between a manhole chimney and a manhole cover frame, said device comprising an annular ring spanning the frame-chimney joint and including a plurality of segments, and adhering means located between said ring and the manhole chimney and between said ring and the manhole cover frame for adhering said ring to the manhole chimney and the manhole cover frame, said adhering means providing a water tight seal between said ring and the manhole chimney and said ring and the manhole cover frame.
Claim 14
Dependent Claim
90 words
A manhole sealing device for sealing a frame-chimney joint between a manhole chimney and a manhole cover frame, said device comprising an annular ring spanning the frame-chimney joint and including a plurality of segments, and adhering means located between said ring and the manhole chimney and between said ring and the manhole cover frame for adhering said ring to the manhole chimney and the manhole cover frame, said adhering means providing a water tight seal between said ring and the manhole chimney and said ring and the manhole cover frame.
Claim 15
Dependent Claim
18 words
A manhole sealing device according to claim 11 wherein said ring segments are held together by slip joints.
Claim 16
Dependent Claim
26 words
A manhole sealing device according to claim 11 wherein said annular ring includes an expansion joint to permit the adjustment of the diameter of said ring.
Claim 17
Dependent Claim
38 words
A manhole sealing device according to claim 11 wherein said annular ring further includes means for securing said ring adjacent the frame and the chimney, said means comprising a plurality of horizontal retainers located in the frame-chimney joint.
Claim 18
Dependent Claim
18 words
A manhole sealing device according to claim 11 wherein said adhering means comprises a flexible water resistant cement.
Claim 19
Dependent Claim
32 words
A manhole sealing device in accordance with claim 11 wherein said ring spanning the frame-chimney joint spans the frame-chimney joint on the inside of the manhole chimney and the manhole cover frame.
References Cited (Backward Citations)
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GB1087178A
Cited
JPS5239953A
Cited
JPS5248117A
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US4049296A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-04-14 | 1989-10-14 | 1990-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-14 | 1993-10-14 | 1994-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-14 | 1997-10-14 | 1998-04-15 | $7700.00 | Window Closed / Lapsed |