CA2010948A1 - Street manhole cover lifting device - Google Patents
Street manhole cover lifting deviceInfo
- Publication number
- CA2010948A1 CA2010948A1 CA2010948A CA2010948A CA2010948A1 CA 2010948 A1 CA2010948 A1 CA 2010948A1 CA 2010948 A CA2010948 A CA 2010948A CA 2010948 A CA2010948 A CA 2010948A CA 2010948 A1 CA2010948 A1 CA 2010948A1
- Authority
- CA
- Canada
- Prior art keywords
- collar
- ring
- base wall
- wall
- sit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
MANHOLE COVER ANNULAR SUPPORT FOR REPAVED STREET
ABSTRACT OF THE DISCLOSURE
In a street manhole defining an elongated manhole duct provided with a rigid collar at its top mouth, the collar having a radially inward annular cavity defining a base wall, parallel to the plane of the collar and a side wall, orthogonal to the base wall. The collar further defines a top wall parallel to the base wall. A spacer device is provided for raising the cover level from the collar base wall, and defines: (a) a first rigid ring, destined to sit on the collar base wall; (b) a second rigid ring, diametrally larger than the first ring and destined to sit on the collar top wall; and (c) connecting tongues, for coaxially interconnecting the rings about spaced planes, the connecting tongues being flexible and capable of bending under load, so as to bring the first ring to sit against the collar base wall and the second ring to sit against the collar top wall.
The tongues will bend longitudinally so as to pivot about their lengthwise axes upon being responsive to a biasing load being applied transversely to the plane of at least one of the cover member and the second ring.
ABSTRACT OF THE DISCLOSURE
In a street manhole defining an elongated manhole duct provided with a rigid collar at its top mouth, the collar having a radially inward annular cavity defining a base wall, parallel to the plane of the collar and a side wall, orthogonal to the base wall. The collar further defines a top wall parallel to the base wall. A spacer device is provided for raising the cover level from the collar base wall, and defines: (a) a first rigid ring, destined to sit on the collar base wall; (b) a second rigid ring, diametrally larger than the first ring and destined to sit on the collar top wall; and (c) connecting tongues, for coaxially interconnecting the rings about spaced planes, the connecting tongues being flexible and capable of bending under load, so as to bring the first ring to sit against the collar base wall and the second ring to sit against the collar top wall.
The tongues will bend longitudinally so as to pivot about their lengthwise axes upon being responsive to a biasing load being applied transversely to the plane of at least one of the cover member and the second ring.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002010948A CA2010948C (en) | 1990-02-26 | 1990-02-26 | Street manhole cover lifting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002010948A CA2010948C (en) | 1990-02-26 | 1990-02-26 | Street manhole cover lifting device |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2010948A1 true CA2010948A1 (en) | 1990-09-10 |
CA2010948C CA2010948C (en) | 1992-11-17 |
Family
ID=4144386
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002010948A Expired - Lifetime CA2010948C (en) | 1990-02-26 | 1990-02-26 | Street manhole cover lifting device |
Country Status (1)
Country | Link |
---|---|
CA (1) | CA2010948C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5462386A (en) * | 1994-09-02 | 1995-10-31 | Prescott; Alain | Watertight raising band for manhole |
-
1990
- 1990-02-26 CA CA002010948A patent/CA2010948C/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5462386A (en) * | 1994-09-02 | 1995-10-31 | Prescott; Alain | Watertight raising band for manhole |
Also Published As
Publication number | Publication date |
---|---|
CA2010948C (en) | 1992-11-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |