CA2038020A1 - Raising structure for manhole cover - Google Patents
Raising structure for manhole coverInfo
- Publication number
- CA2038020A1 CA2038020A1 CA 2038020 CA2038020A CA2038020A1 CA 2038020 A1 CA2038020 A1 CA 2038020A1 CA 2038020 CA2038020 CA 2038020 CA 2038020 A CA2038020 A CA 2038020A CA 2038020 A1 CA2038020 A1 CA 2038020A1
- Authority
- CA
- Canada
- Prior art keywords
- legs
- ring
- periphery
- rings
- raising structure
- 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
The raising structure according to the invention is intended to raise a manhole cover to the level of the resurfacing new layer of asphalt. The raising structure comprises a pair of superposed concentric rings one of which is slightly smaller than the other one so that the outer diameter of the smaller one is slightly smaller than the inner diameter of the other one. The rings are maintained in a spaced relationship by a set of spacer legs disposed around the periphery of the inner ring. Each of the legs have one end secured to the outer periphery of the small ring and the outer end of the leg is secured to the inner periphery of the larger ring. The legs are characterized by at least one bent section between both ends of the legs. The bent section extends in a plane tangent to the outer periphery of the smaller ring and the inner periphery of the larger ring. The bent section is adapted to define a weak section in the legs for allowing a change in the angle of the bent upon pressure on one of the rings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2038020 CA2038020C (en) | 1991-03-12 | 1991-03-12 | Raising structure for manhole cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2038020 CA2038020C (en) | 1991-03-12 | 1991-03-12 | Raising structure for manhole cover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2038020A1 true CA2038020A1 (en) | 1992-09-13 |
| CA2038020C CA2038020C (en) | 2000-08-08 |
Family
ID=4147168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2038020 Expired - Lifetime CA2038020C (en) | 1991-03-12 | 1991-03-12 | Raising structure for manhole cover |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2038020C (en) |
-
1991
- 1991-03-12 CA CA 2038020 patent/CA2038020C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2038020C (en) | 2000-08-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |