CN2931419Y - Normal closing apparatus for derrick protection door - Google Patents
Normal closing apparatus for derrick protection door Download PDFInfo
- Publication number
- CN2931419Y CN2931419Y CN 200620073337 CN200620073337U CN2931419Y CN 2931419 Y CN2931419 Y CN 2931419Y CN 200620073337 CN200620073337 CN 200620073337 CN 200620073337 U CN200620073337 U CN 200620073337U CN 2931419 Y CN2931419 Y CN 2931419Y
- Authority
- CN
- China
- Prior art keywords
- housing
- protective door
- slide plate
- case body
- derrick
- 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 - Lifetime
Links
- 230000001681 protective effect Effects 0.000 abstract description 33
- 238000000034 method Methods 0.000 abstract description 2
- 239000000725 suspension Substances 0.000 abstract 1
- 239000000463 material Substances 0.000 description 10
- 238000010276 construction Methods 0.000 description 8
- 238000007599 discharging Methods 0.000 description 3
- 241000220317 Rosa Species 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009408 flooring Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
Images
Landscapes
- Elevator Door Apparatuses (AREA)
Abstract
Description
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200620073337 CN2931419Y (en) | 2006-05-30 | 2006-05-30 | Normal closing apparatus for derrick protection door |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 200620073337 CN2931419Y (en) | 2006-05-30 | 2006-05-30 | Normal closing apparatus for derrick protection door |
Publications (1)
Publication Number | Publication Date |
---|---|
CN2931419Y true CN2931419Y (en) | 2007-08-08 |
Family
ID=38347920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 200620073337 Expired - Lifetime CN2931419Y (en) | 2006-05-30 | 2006-05-30 | Normal closing apparatus for derrick protection door |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN2931419Y (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110803604A (en) * | 2019-10-24 | 2020-02-18 | 广州市第三建筑工程有限公司 | Mechanical locking mechanism and electromechanical interlocking cage |
CN111137802A (en) * | 2019-12-27 | 2020-05-12 | 北京华城建设监理有限责任公司 | Vertical conveyer of small-size material that construction used |
-
2006
- 2006-05-30 CN CN 200620073337 patent/CN2931419Y/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110803604A (en) * | 2019-10-24 | 2020-02-18 | 广州市第三建筑工程有限公司 | Mechanical locking mechanism and electromechanical interlocking cage |
CN111137802A (en) * | 2019-12-27 | 2020-05-12 | 北京华城建设监理有限责任公司 | Vertical conveyer of small-size material that construction used |
CN111137802B (en) * | 2019-12-27 | 2021-05-18 | 北京华城建设监理有限责任公司 | Vertical conveyer of small-size material that construction used |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: SUZHOU NO.2 BUILDING GROUP CO.,LTD. Free format text: FORMER OWNER: MA ZHILIANG; PATENTEE Effective date: 20080411 |
|
C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20080411 Address after: No. 88, Yang Cheng Road, Xiangcheng District, Jiangsu, Suzhou 215131, China Patentee after: Suzhou Erjian Construction Group Co., Ltd. Address before: Room 10-503, West Yang bang bang, Guangji Road, Suzhou, Jiangsu, zip code: 215008 Co-patentee before: Dong Fuyuan Patentee before: Ma Chi Liang |
|
CX01 | Expiry of patent term |
Granted publication date: 20070808 |
|
EXPY | Termination of patent right or utility model |