GB201916340D0 - A trapdoor safety device - Google Patents
A trapdoor safety deviceInfo
- Publication number
- GB201916340D0 GB201916340D0 GBGB1916340.1A GB201916340A GB201916340D0 GB 201916340 D0 GB201916340 D0 GB 201916340D0 GB 201916340 A GB201916340 A GB 201916340A GB 201916340 D0 GB201916340 D0 GB 201916340D0
- Authority
- GB
- United Kingdom
- Prior art keywords
- trapdoor
- safety device
- safety
- trapdoor safety
- 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
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1916340.1A GB2588821B (en) | 2019-11-11 | 2019-11-11 | A trapdoor safety device |
PCT/IB2020/060447 WO2021094882A1 (en) | 2019-11-11 | 2020-11-06 | A trapdoor safety device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1916340.1A GB2588821B (en) | 2019-11-11 | 2019-11-11 | A trapdoor safety device |
Publications (3)
Publication Number | Publication Date |
---|---|
GB201916340D0 true GB201916340D0 (en) | 2019-12-25 |
GB2588821A GB2588821A (en) | 2021-05-12 |
GB2588821B GB2588821B (en) | 2021-11-10 |
Family
ID=69062233
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1916340.1A Active GB2588821B (en) | 2019-11-11 | 2019-11-11 | A trapdoor safety device |
Country Status (2)
Country | Link |
---|---|
GB (1) | GB2588821B (en) |
WO (1) | WO2021094882A1 (en) |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2089659U (en) | 1991-01-14 | 1991-11-27 | 中国科学技术大学 | General wave guide cavity for microwave and millimeter wave semiconductor device |
US5554972A (en) | 1994-10-21 | 1996-09-10 | Garlock Equipment Company | Electronic perimeter warning system |
US7292143B2 (en) * | 2005-05-20 | 2007-11-06 | Drake David A | Remote sensing and communication system |
US8237576B2 (en) * | 2008-07-22 | 2012-08-07 | Utility Sealing Systems, Inc. | Manhole security system |
KR101039688B1 (en) * | 2008-08-20 | 2011-06-13 | 유진곤 | Manhole cover apparatus having lamp |
CA2726119C (en) * | 2009-12-21 | 2016-03-15 | Mcgard Llc | Manhole security cover |
AU2011326403B2 (en) | 2010-11-12 | 2015-03-26 | Evoqua Water Technologies Pte. Ltd. | Electrical purification apparatus having a blocking spacer |
CN203588401U (en) * | 2013-11-27 | 2014-05-07 | 成都扬帆电力制造有限公司 | Manhole cover monitoring alarm system |
CN104464134B (en) * | 2014-12-01 | 2017-01-18 | 福建三鑫隆信息技术开发股份有限公司 | Inclined well lid alarm system and alarm method |
CN105139561A (en) * | 2015-08-07 | 2015-12-09 | 高坤 | Manhole cover inclination alarm device, method and system, and manhole cover |
CN205247560U (en) * | 2015-12-19 | 2016-05-18 | 长安大学 | Motor -driven no well lid highway section attention device of saying of non - |
CN205692305U (en) | 2016-06-20 | 2016-11-16 | 苏州华徕光电仪器有限公司 | A kind of safety alarm device based on electro-optical distance measurement |
CN208965591U (en) * | 2018-08-30 | 2019-06-11 | 福建泉欣电力有限公司 | A kind of intelligent well cover based on NB-IoT Internet of Things |
-
2019
- 2019-11-11 GB GB1916340.1A patent/GB2588821B/en active Active
-
2020
- 2020-11-06 WO PCT/IB2020/060447 patent/WO2021094882A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
GB2588821A (en) | 2021-05-12 |
GB2588821B (en) | 2021-11-10 |
WO2021094882A1 (en) | 2021-05-20 |
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