US4592674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concrete manhole
Assignee: Individual
•
Filing: 1978-03-23
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Granted: 1986-06-03
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Expires: 1998-03-23
Abstract
Abstract A manhole barrel is cast with an annular gasket in place in the barrel form. The form has a frusto-conical pallet section grooved for receiving the gasket. Anchors protruding from the gasket become embedded in concrete when the latter is introduced into the form.
Inventors
- 👤 Michael G. Baliva
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:36
CPC Classifications
E; E02; E02D; E02D29/00; E02D29/12; E02D29/14; E02D29/149; B; B28; B28B; B28B21/00; B28B21/56; B28B21/563; B28B21/76; B28B21/765
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
172 words
A manhole structure having two barrels, one thereof having a male end, and the other thereof having a female end; said male end having an external peripheral surface, said female end having an internal peripheral surface, and said female end having said male end therein; said barrels being positioned vertically, one on top and one on the bottom, and there being support means for causing the weight of the top barrel to be supported by the bottom barrel, while maintaining an annular space between said surfaces; said space having an annular gasket therein, said gasket having resilient sealing flange means extending around said space and in sealing contact with one said peripheral surface, and said gasket having anchor means extending around said space, and being embedded in the said end having the other said peripheral surface; and said gasket having an annular seat flange extending therearound, said seat flange extending away from said space and horizontally between said barrels, and each said barrel having an annular surface sealingly contacting said seat flange.
Claim 2
Dependent Claim
172 words
A manhole structure having two barrels, one thereof having a male end, and the other thereof having a female end; said male end having an external peripheral surface, said female end having an internal peripheral surface, and said female end having said male end therein; said barrels being positioned vertically, one on top and one on the bottom, and there being support means for causing the weight of the top barrel to be supported by the bottom barrel, while maintaining an annular space between said surfaces; said space having an annular gasket therein, said gasket having resilient sealing flange means extending around said space and in sealing contact with one said peripheral surface, and said gasket having anchor means extending around said space, and being embedded in the said end having the other said peripheral surface; and said gasket having an annular seat flange extending therearound, said seat flange extending away from said space and horizontally between said barrels, and each said barrel having an annular surface sealingly contacting said seat flange.
Claim 3
Dependent Claim
34 words
The manhole structure of claim 1, wherein said seat flange has resilient sealing ridge means contacting one said annular surface and anchor means embedded in the said end having the other said annular surface.
Claim 4
Dependent Claim
41 words
The manhole structure of any one of claims 1 and 2, wherein said anchor means projects from surface of said gasket, and such surface is everywhere in contact with surface of the said end in which said anchor means is embedded.
Claim 5
Dependent Claim
39 words
The manhole structure of any one of claims 1 and 2, wherein each of said peripheral surfaces and gasket is frusto-conical in form, and said peripheral surfaces are mutually parallel and spaced from one another by said annular space.
Claim 6
Dependent Claim
171 words
A manhole structure having two barrels, one thereof having a male end, and the other therof having a female end; said male end having an external peripheral surface, said female end having an internal peripheral surface, said female end having said male end therein; said barrels being positioned vertically, one on top and one on the bottom and there being support means for causing the entire weight of the top barrel to be borne by the bottom barrel, while maintaining an annular space between said peripheral surfaces; said space having an annular gasket therein, said gasket having vertically-spaced resilient sealing flanges extending from said gasket and around said space and being in downwardly-deflected, circumferential sealing contact with one said peripheral surface, and said gasket having anchor means extending around said space, said anchor means being embedded in the said end having the other said peripheral surface, said flanges being at the same time out of contact, both with each other and with any gasket portions as may be adjacent said flanges.
Claim 7
Dependent Claim
171 words
A manhole structure having two barrels, one thereof having a male end, and the other therof having a female end; said male end having an external peripheral surface, said female end having an internal peripheral surface, said female end having said male end therein; said barrels being positioned vertically, one on top and one on the bottom and there being support means for causing the entire weight of the top barrel to be borne by the bottom barrel, while maintaining an annular space between said peripheral surfaces; said space having an annular gasket therein, said gasket having vertically-spaced resilient sealing flanges extending from said gasket and around said space and being in downwardly-deflected, circumferential sealing contact with one said peripheral surface, and said gasket having anchor means extending around said space, said anchor means being embedded in the said end having the other said peripheral surface, said flanges being at the same time out of contact, both with each other and with any gasket portions as may be adjacent said flanges.
Claim 8
Dependent Claim
41 words
The manhole structure of claim 5, wherein said gasket has an annular seat flange extending therearound, said seat flange extending away from said space and horizontally between said barrels, each said barrel having an annular surface sealingly contacting said seat flange.
Claim 9
Dependent Claim
34 words
The manhole structure of claim 6, wherein said seat flange has resilient sealing ridge means contacting one said annular surface and anchor means embedded in the said end having the other said annular surface.
Claim 10
Dependent Claim
42 words
The manhole structure of any one of claims 5, 6 and 7, wherein said anchor means projects from surface of said gasket, and such surface is everywhere in contact with surface of the said end in which said anchor means is embedded.
Claim 11
Dependent Claim
40 words
The manhole structure of any one of claims 5, 6 and 7, wherein each of said peripheral surfaces and said gasket is frusto-conical in form, and said peripheral surfaces are mutually parallel and spaced from one another by said space.
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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) | 1989-06-02 | 1989-12-02 | 1990-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-06-02 | 1993-12-02 | 1994-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-06-02 | 1997-12-02 | 1998-06-03 | $7700.00 | Window Closed / Lapsed |