GB2588821B - A trapdoor safety device - Google Patents
A trapdoor safety device Download PDFInfo
- Publication number
- GB2588821B GB2588821B GB1916340.1A GB201916340A GB2588821B GB 2588821 B GB2588821 B GB 2588821B GB 201916340 A GB201916340 A GB 201916340A GB 2588821 B GB2588821 B GB 2588821B
- 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.)
- Active
Links
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
-
- 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
- E02D29/127—Manhole shafts; Other inspection or access chambers; Accessories therefor with devices for impeding fall or injuries of persons
-
- 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
- E02D29/1481—Security devices, e.g. indicating unauthorised opening
-
- E—FIXED CONSTRUCTIONS
- E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
- E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
- E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
- E06B5/01—Trap-doors
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/02—Mechanical actuation
- G08B13/08—Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/22—Status alarms responsive to presence or absence of persons
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
- G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources
Landscapes
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Civil Engineering (AREA)
- Emergency Management (AREA)
- Business, Economics & Management (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Emergency Alarm Devices (AREA)
- Alarm Systems (AREA)
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 GB201916340D0 (en) | 2019-12-25 |
GB2588821A GB2588821A (en) | 2021-05-12 |
GB2588821B true 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) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100022651A (en) * | 2008-08-20 | 2010-03-03 | 유진곤 | Manhole cover apparatus having lamp |
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 |
CN104464134A (en) * | 2014-12-01 | 2015-03-25 | 福建三鑫隆新材料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 - |
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 |
Family Cites Families (7)
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 |
CA2726119C (en) * | 2009-12-21 | 2016-03-15 | Mcgard Llc | Manhole security cover |
SG181240A1 (en) | 2010-11-12 | 2012-06-28 | Siemens Pte Ltd | Electrochemical separation modules |
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 |
-
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
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20100022651A (en) * | 2008-08-20 | 2010-03-03 | 유진곤 | Manhole cover apparatus having lamp |
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 |
CN104464134A (en) * | 2014-12-01 | 2015-03-25 | 福建三鑫隆新材料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 - |
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 |
Also Published As
Publication number | Publication date |
---|---|
WO2021094882A1 (en) | 2021-05-20 |
GB2588821A (en) | 2021-05-12 |
GB201916340D0 (en) | 2019-12-25 |
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