FR2455128A1 - EXTENSIBLE GUARDRAIL, PARTICULARLY FOR THE PROTECTION OF OPENINGS IN PAVEMENTS - Google Patents
EXTENSIBLE GUARDRAIL, PARTICULARLY FOR THE PROTECTION OF OPENINGS IN PAVEMENTSInfo
- Publication number
- FR2455128A1 FR2455128A1 FR7911207A FR7911207A FR2455128A1 FR 2455128 A1 FR2455128 A1 FR 2455128A1 FR 7911207 A FR7911207 A FR 7911207A FR 7911207 A FR7911207 A FR 7911207A FR 2455128 A1 FR2455128 A1 FR 2455128A1
- Authority
- FR
- France
- Prior art keywords
- chain
- foot
- guardrail
- posts
- pavements
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
- E01F13/02—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions free-standing; portable, e.g. for guarding open manholes ; Portable signs or signals specially adapted for fitting to portable barriers
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The guardrail comprises four posts (2) connected by pantograph type extensible linkage. The hollow circular section posts each contain a coil spring (7) whose head is anchored by a diametric pin (8), and a chain of flat rectangular section (9,11,13) bars. The foot of the spring hooks onto the head (4) of the chain. The last bar (13) of the chain is 'L' shaped forming a post anchoring foot. By pulling the chain from the post and pivoting the foot horizontally about either pin (10,12) the length of the foot is varied. The hooked arm (13A) turns down to grip the edge of the road opening.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7911207A FR2455128A1 (en) | 1979-04-25 | 1979-04-25 | EXTENSIBLE GUARDRAIL, PARTICULARLY FOR THE PROTECTION OF OPENINGS IN PAVEMENTS |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR7911207A FR2455128A1 (en) | 1979-04-25 | 1979-04-25 | EXTENSIBLE GUARDRAIL, PARTICULARLY FOR THE PROTECTION OF OPENINGS IN PAVEMENTS |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2455128A1 true FR2455128A1 (en) | 1980-11-21 |
FR2455128B1 FR2455128B1 (en) | 1982-10-29 |
Family
ID=9224995
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7911207A Granted FR2455128A1 (en) | 1979-04-25 | 1979-04-25 | EXTENSIBLE GUARDRAIL, PARTICULARLY FOR THE PROTECTION OF OPENINGS IN PAVEMENTS |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2455128A1 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1688074A (en) * | 1928-03-21 | 1928-10-16 | O R Bartram | Manhole safety cage |
US1741323A (en) * | 1929-03-02 | 1929-12-31 | Engineering Products Corp Inc | Manhole guard |
FR1025423A (en) * | 1950-10-04 | 1953-04-15 | Rivolier Pere Et Fils | Foldable and portable traffic barrier, for roads, construction sites or other jobs |
GB1138339A (en) * | 1965-12-28 | 1969-01-01 | Geoffrey William Thomas | Support apparatus, particularly but not exclusively for games posts |
DE1936303B1 (en) * | 1969-07-17 | 1971-03-18 | Degussa | Safety barrier for grate hatches |
DE2436375A1 (en) * | 1974-07-27 | 1976-02-05 | Ludwig Steffens | Shaped-tube safety barrier post - containing internal round steel bar with top media for drawing bottom hook |
-
1979
- 1979-04-25 FR FR7911207A patent/FR2455128A1/en active Granted
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1688074A (en) * | 1928-03-21 | 1928-10-16 | O R Bartram | Manhole safety cage |
US1741323A (en) * | 1929-03-02 | 1929-12-31 | Engineering Products Corp Inc | Manhole guard |
FR1025423A (en) * | 1950-10-04 | 1953-04-15 | Rivolier Pere Et Fils | Foldable and portable traffic barrier, for roads, construction sites or other jobs |
GB1138339A (en) * | 1965-12-28 | 1969-01-01 | Geoffrey William Thomas | Support apparatus, particularly but not exclusively for games posts |
DE1936303B1 (en) * | 1969-07-17 | 1971-03-18 | Degussa | Safety barrier for grate hatches |
DE2436375A1 (en) * | 1974-07-27 | 1976-02-05 | Ludwig Steffens | Shaped-tube safety barrier post - containing internal round steel bar with top media for drawing bottom hook |
Also Published As
Publication number | Publication date |
---|---|
FR2455128B1 (en) | 1982-10-29 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
CL | Concession to grant licences | ||
ST | Notification of lapse |