GB759483A - Improvements in foldable masts - Google Patents
Improvements in foldable mastsInfo
- Publication number
- GB759483A GB759483A GB30578/52A GB3057852A GB759483A GB 759483 A GB759483 A GB 759483A GB 30578/52 A GB30578/52 A GB 30578/52A GB 3057852 A GB3057852 A GB 3057852A GB 759483 A GB759483 A GB 759483A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mast
- foldable
- levers
- upper mast
- masts
- 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
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/18—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic
- E04H12/187—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic with hinged sections
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Ventilation (AREA)
Abstract
759,483. Foldable masts. UDDEVALLAVARVET AKTIEBOLAG. Dec. 2, 1952 [March 11, 1952], No. 30578/52. Class 115. In a mast comprising an upper mast 1 and a stationary lower mast 2 foldably connected together by a hinging device, the upper mast 1 is at its lower end provided with quadrant-like levers 3 for the purpose of transmitting braking power when folding and hauling power when raising the upper mast, the levers being shaped so that when folding or raising the upper mast the load in the wire 18 transmitting power to the levers is constant. Between the foldable upper mast 1 and the stationary lower mast 2 there is provided a gas-tight packing so that when the mast is in its raised position it may be used as a ventilation duct.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE759483X | 1952-03-11 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB759483A true GB759483A (en) | 1956-10-17 |
Family
ID=20326656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30578/52A Expired GB759483A (en) | 1952-03-11 | 1952-12-02 | Improvements in foldable masts |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB759483A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104670441A (en) * | 2013-11-26 | 2015-06-03 | 中国科学院沈阳自动化研究所 | Two-stage foldable ventilating mast for deepwater robot |
-
1952
- 1952-12-02 GB GB30578/52A patent/GB759483A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104670441A (en) * | 2013-11-26 | 2015-06-03 | 中国科学院沈阳自动化研究所 | Two-stage foldable ventilating mast for deepwater robot |
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