CN202900324U - Multi-functional protection air-tight door used for coal min - Google Patents
Multi-functional protection air-tight door used for coal min Download PDFInfo
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- CN202900324U CN202900324U CN 201220357593 CN201220357593U CN202900324U CN 202900324 U CN202900324 U CN 202900324U CN 201220357593 CN201220357593 CN 201220357593 CN 201220357593 U CN201220357593 U CN 201220357593U CN 202900324 U CN202900324 U CN 202900324U
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- lock point
- door body
- wedge
- axle
- door
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Abstract
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Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 201220357593 CN202900324U (en) | 2012-07-21 | 2012-07-21 | Multi-functional protection air-tight door used for coal min |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN 201220357593 CN202900324U (en) | 2012-07-21 | 2012-07-21 | Multi-functional protection air-tight door used for coal min |
Publications (1)
Publication Number | Publication Date |
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CN202900324U true CN202900324U (en) | 2013-04-24 |
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CN 201220357593 Expired - Fee Related CN202900324U (en) | 2012-07-21 | 2012-07-21 | Multi-functional protection air-tight door used for coal min |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103573289A (en) * | 2012-07-21 | 2014-02-12 | 黑龙江省华升救援装备有限公司 | Multifunctional protective airtight door for coal mine |
CN103615164A (en) * | 2013-12-16 | 2014-03-05 | 无锡市海联舰船附件有限公司 | Quickly opened and closed steel airtight door |
CN104405442A (en) * | 2014-11-25 | 2015-03-11 | 安徽雄峰矿山装备有限公司 | Lightweight protection closed door structure of refuge chamber |
CN109458111A (en) * | 2018-09-27 | 2019-03-12 | 江苏拓华人防工程有限公司 | A kind of anti-explosion fire isolating door |
-
2012
- 2012-07-21 CN CN 201220357593 patent/CN202900324U/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103573289A (en) * | 2012-07-21 | 2014-02-12 | 黑龙江省华升救援装备有限公司 | Multifunctional protective airtight door for coal mine |
CN103615164A (en) * | 2013-12-16 | 2014-03-05 | 无锡市海联舰船附件有限公司 | Quickly opened and closed steel airtight door |
CN104405442A (en) * | 2014-11-25 | 2015-03-11 | 安徽雄峰矿山装备有限公司 | Lightweight protection closed door structure of refuge chamber |
CN109458111A (en) * | 2018-09-27 | 2019-03-12 | 江苏拓华人防工程有限公司 | A kind of anti-explosion fire isolating door |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Multifunctional protective airtight door for coal mine Effective date of registration: 20140403 Granted publication date: 20130424 Pledgee: Heilongjiang Xin Cheng investment guarantee Group Co., Ltd. Jiamusi branch Pledgor: Heilongjiang Huasheng Rescue Equipment Co., Ltd. Registration number: 2014230000006 |
|
PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20160422 Granted publication date: 20130424 Pledgee: Heilongjiang Xin Cheng investment guarantee Group Co., Ltd. Jiamusi branch Pledgor: Heilongjiang Huasheng Rescue Equipment Co., Ltd. Registration number: 2014230000006 |
|
PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20160918 Address after: 154101 No. 3 Industrial Park, Heilongjiang, Hegang Patentee after: Heilongjiang Huasheng Graphite Co., Ltd. Address before: 154101 Nanshan Road, Hegang, Heilongjiang, Nanshan District Patentee before: Heilongjiang Huasheng Rescue Equipment Co., Ltd. |
|
CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130424 Termination date: 20180721 |