GB201916340D0 - A trapdoor safety device - Google Patents

A trapdoor safety device

Info

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
Application number
GBGB1916340.1A
Other versions
GB2588821A (en
GB2588821B (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Thwaite Jasper
Original Assignee
Thwaite Jasper
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Thwaite Jasper filed Critical Thwaite Jasper
Priority to GB1916340.1A priority Critical patent/GB2588821B/en
Publication of GB201916340D0 publication Critical patent/GB201916340D0/en
Priority to PCT/IB2020/060447 priority patent/WO2021094882A1/en
Publication of GB2588821A publication Critical patent/GB2588821A/en
Application granted granted Critical
Publication of GB2588821B publication Critical patent/GB2588821B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

GB1916340.1A 2019-11-11 2019-11-11 A trapdoor safety device Active GB2588821B (en)

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)

* Cited by examiner, † Cited by third party
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

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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