GB759483A - Improvements in foldable masts - Google Patents

Improvements in foldable masts

Info

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
Application number
GB30578/52A
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.)
UDDEVALLAVARVET AB
Original Assignee
UDDEVALLAVARVET AB
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 UDDEVALLAVARVET AB filed Critical UDDEVALLAVARVET AB
Publication of GB759483A publication Critical patent/GB759483A/en
Expired legal-status Critical Current

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.
GB30578/52A 1952-03-11 1952-12-02 Improvements in foldable masts Expired GB759483A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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