GB2257735B - Improvements relating to access covers - Google Patents
Improvements relating to access coversInfo
- Publication number
- GB2257735B GB2257735B GB9214497A GB9214497A GB2257735B GB 2257735 B GB2257735 B GB 2257735B GB 9214497 A GB9214497 A GB 9214497A GB 9214497 A GB9214497 A GB 9214497A GB 2257735 B GB2257735 B GB 2257735B
- Authority
- GB
- United Kingdom
- Prior art keywords
- improvements relating
- access covers
- covers
- access
- relating
- 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.)
- Expired - Fee Related
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
- E02D29/14—Covers for manholes or the like; Frames for covers
- E02D29/1427—Locking devices
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Automotive Seat Belt Assembly (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU21016/92A AU658426B2 (en) | 1991-08-15 | 1992-08-14 | Substituted heterocycles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB919114821A GB9114821D0 (en) | 1991-07-09 | 1991-07-09 | Access covers |
Publications (3)
Publication Number | Publication Date |
---|---|
GB9214497D0 GB9214497D0 (en) | 1992-08-19 |
GB2257735A GB2257735A (en) | 1993-01-20 |
GB2257735B true GB2257735B (en) | 1995-01-11 |
Family
ID=10698077
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB919114821A Pending GB9114821D0 (en) | 1991-07-09 | 1991-07-09 | Access covers |
GB9214497A Expired - Fee Related GB2257735B (en) | 1991-07-09 | 1992-07-08 | Improvements relating to access covers |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB919114821A Pending GB9114821D0 (en) | 1991-07-09 | 1991-07-09 | Access covers |
Country Status (1)
Country | Link |
---|---|
GB (2) | GB9114821D0 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2308858A (en) * | 1995-12-30 | 1997-07-09 | Richard James Vince Fillingham | Manhole cover keyway plug |
GB201507852D0 (en) * | 2015-05-07 | 2015-06-17 | Wrekin Holdings Ltd | Ground surface access assembly covers |
CN105402231B (en) * | 2015-12-14 | 2018-03-09 | 山东俊强五金股份有限公司 | A kind of pressure automatic locking mechanism |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB463885A (en) * | 1936-01-20 | 1937-04-08 | Henry Brown | Improvements in and relating to covers for manholes and the like |
GB2017198A (en) * | 1977-12-10 | 1979-10-03 | Jones & Son Ltd Fredrick | An Improved Locking Device |
GB2170846A (en) * | 1985-02-07 | 1986-08-13 | Duct & Access Covers Ltd | Seal for the lifting eye of an access cover unit |
-
1991
- 1991-07-09 GB GB919114821A patent/GB9114821D0/en active Pending
-
1992
- 1992-07-08 GB GB9214497A patent/GB2257735B/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB463885A (en) * | 1936-01-20 | 1937-04-08 | Henry Brown | Improvements in and relating to covers for manholes and the like |
GB2017198A (en) * | 1977-12-10 | 1979-10-03 | Jones & Son Ltd Fredrick | An Improved Locking Device |
GB2170846A (en) * | 1985-02-07 | 1986-08-13 | Duct & Access Covers Ltd | Seal for the lifting eye of an access cover unit |
Also Published As
Publication number | Publication date |
---|---|
GB9114821D0 (en) | 1991-08-28 |
GB2257735A (en) | 1993-01-20 |
GB9214497D0 (en) | 1992-08-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19970708 |