WO2008125110A2 - Telescoping mast - Google Patents

Telescoping mast Download PDF

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Publication number
WO2008125110A2
WO2008125110A2 PCT/DK2008/000133 DK2008000133W WO2008125110A2 WO 2008125110 A2 WO2008125110 A2 WO 2008125110A2 DK 2008000133 W DK2008000133 W DK 2008000133W WO 2008125110 A2 WO2008125110 A2 WO 2008125110A2
Authority
WO
WIPO (PCT)
Prior art keywords
telescoping
actuators
telescopic mast
sections
mast
Prior art date
Application number
PCT/DK2008/000133
Other languages
French (fr)
Other versions
WO2008125110A3 (en
Inventor
Lars Keller
Original Assignee
Falck Schmidt Defence Systems A/S
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
Priority to CA2683981A priority Critical patent/CA2683981C/en
Application filed by Falck Schmidt Defence Systems A/S filed Critical Falck Schmidt Defence Systems A/S
Priority to SI200831841T priority patent/SI2147174T1/en
Priority to NZ581080A priority patent/NZ581080A/en
Priority to PL08758200T priority patent/PL2147174T3/en
Priority to EP08758200.3A priority patent/EP2147174B1/en
Priority to AU2008238435A priority patent/AU2008238435B2/en
Priority to DK08758200.3T priority patent/DK2147174T3/en
Priority to ES08758200.3T priority patent/ES2638001T3/en
Priority to US12/596,266 priority patent/US8661744B2/en
Publication of WO2008125110A2 publication Critical patent/WO2008125110A2/en
Publication of WO2008125110A3 publication Critical patent/WO2008125110A3/en
Priority to IL201536A priority patent/IL201536A0/en
Priority to HRP20171132TT priority patent/HRP20171132T1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1235—Collapsible supports; Means for erecting a rigid antenna
    • 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
    • E04H12/182—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures movable or with movable sections, e.g. rotatable or telescopic telescopic
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/08—Means for collapsing antennas or parts thereof
    • H01Q1/10—Telescopic elements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means

Definitions

  • the present invention concerns a telescopic mast including at least one or more telescoping joints with parallel walls, where one of two adjacent telescoping sections is narrower than the other of the two adjacent telescoping sections, so that a first telescoping section can be moved into and out of, respectively, of a second telescoping section in a telescoping joint as well as the second section may be moved into and out of a third telescoping section in a further telescoping joint, where between each of two adjacent telescoping sections in a telescoping joint there is provided at least one actuator, preferably several actuators, adapted to urge the adjacent telescoping sections away from each other, where these actuators are disposed internally of the telescoping joints.
  • US 4,151,534 describes a free-standing mast for an antenna including a number of telescoping tubes.
  • US 4,137,535 describes a telescopic mast which is controlled pneumatically.
  • the mast includes a number of telescoping tubes that may be collapsed in a base section.
  • a piston is integrated in each section. None of these inventions fulfil the requirements to a simple, efficient and sturdy solution.
  • Telescopic masts can be very high and may be used for sensors and weapons as well as for pointing out targets.
  • High telescopic masts contain many telescoping sections and it is expedient that the latter are not heavier or larger in size than necessary.
  • the technology comprises frail technical solutions wherein failures may arise, causing the telescopic mast not be operated rapidly, accurately and under all conditions.
  • high telescopic masts it is thus very advantageous if these are built up of simple components which, irrespectively of the conditions, provide a simple and uncomplicated use and operation. None of the prior art solutions fulfil these demands.
  • the object of the present invention is to provide a telescopic mast wherein the mast may be extended and collapsed rapidly, and wherein the mechanism therefore is simple and efficient.
  • the invention concerns a telescopic mast which at least includes one or more telescoping joints, where a telescoping joint consists of two telescoping sections dimensioned so that one section can be moved into another section, where between each of two adjacent telescoping sections in a telescoping joint there is provided at least one actuator urging the adjacent telescoping sections away from each other, where these actuators are disposed internally of the telescoping joints and mutually offset at the internal periphery, and wherein at least one actuator and preferably several actuators mounted in a telescoping joint are independent of one or more further actuators which are mounted in one or more further telescoping joints or in the same telescoping joint.
  • the actuators are provided at a protected location, and the actuators may be designed with lengths overlapping each other when the telescopic mast is collapsed. Exactly this technical feature makes this solution substantially different from prior art solutions, as the latter are often equipped with serially connected actuators which thus only allow the collapsed telescopic mast to be drawn together to the sum of the length of the actuators.
  • the advantage achieved by the protecting internal disposition is particularly attractive in connection with using a mast according to the invention for military purposes, where a mast with visible actuators may possibly be destroyed by firing at the visible actuators.
  • a telescopic mast By a telescopic mast according to the invention where the at least one actuator and preferably several actuators are mounted in a telescoping joint and are independent of one or more further actuators which are mounted in one or more further telescoping joints or in the same telescoping joint, great reliability is achieved.
  • a mechanically simple and sturdy construction where two adjacent telescoping sections by triggering an extending of the mast are urged away from each other by an actuator mechanism which is not mechanically connected to other corresponding actuator mechanisms in further telescoping joints in the same telescoping mast.
  • This extension is effected without using complicated cord or wire connections that extend the mast via pulleys and the like.
  • a more sure operation is achieved by having several actuators, e.g. 2, 3 or maybe even 6 or more actuators at each telescoping joint.
  • actuators e.g. 2, 3 or maybe even 6 or more actuators at each telescoping joint.
  • a telescopic mast is equipped with actuators of the type linear actuators, where the direction of movement is substantially parallel with the longitudinal direction of the telescoping sections.
  • a preferred actuator type is the so-called gas springs.
  • the choice of actuators may of course be adapted to need, and possibly other combinations of various types may be used, including electric, hydraulic or pneumatic actuators, and unmentioned types may be applied as well.
  • actuators of the type called gas springs are suited for use in connection with a telescopic mast according to the invention, as no other operations are to be performed other than triggering the mast for pushing it out to the desired length. Furthermore, it is advantageous that if an actuator of this type is damaged, the mast may still be pulled down, the actuator being easy to replace and not requiring filling of pressurised fluid, such as oil or air, and no connecting to an electric system either. It is thus not the entire actuator system that is paralysed if a single actuator is damaged, and the mast is still at least partly operational.
  • a mast with actuators as disclosed is that it may be extended without using external connections, thus not requiring a noisy pump in order to be extended. Extension as well as collapsing may thus be performed without disturbing noise.
  • a telescopic mast according to the invention may be designed such that the telescoping sections are constituted by cylindric profiles.
  • the telescoping sections can be designed as edged profiles, more specifically as octagonally profiled pipes which advantageously may be wound fibre composite tubes, e.g. carbon fibre reinforced epoxy tubes.
  • Pipes or tubes of this kind have the great advantage that they are very rigid, and if they are made of carbon fibre reinforced epoxy, they are at the same time very light compared with other fibre composites or metals. In that way is achieved a stable and light telescopic mast with very high rigidity and strength.
  • the telescoping sections may be drawn together by a draw wire which is fastened internally at the upper end of the telescopic mast.
  • the draw wire may, for example, be fastened at the uppermost and thinnest telescoping section and thus run inside the mast, where it is rolled up on a reel at the foot of the mast. This rolling up may be effected manually, hydraulically or by another suitable method.
  • a clear advantage is, however, that the mast may be drawn back manually at any time in case of occurring supply problems with the usual drive power. Such a withdrawal may possibly be effected by a crank handle or by an electric drill or similar.
  • the internally disposed actuators may be of a type that may be locked at any position, but preferably there is used a type which is normally extended and held back by the said draw wire.
  • the mast By extending a telescopic mast by such actuators, the mast will typically be extended from the bottom so that the largest telescoping joints are extended at first and the lesser ones subsequently, as the actuators in these telescoping joints will be the strongest.
  • the actuators may be provided with the option of being locked at various positions corresponding to various heights. Such a locking may be effected manually or via remote control to one or more actuators or to a device in connection with one or more actuators.
  • a mast may thus be extended and locked at a certain height. At the same time, in this way it may be controlled which telescoping joints are to be extended and how much the individual joints are to be extended.
  • a telescopic mast according to the invention may advantageously be designed so that a pipe is provided inside the telescoping sections.
  • Supply lines and cables of various kinds used in connection with equipment disposed at the top of the telescopic mast may be arranged in this pipe.
  • this may be antenna equipment, surveillance equipment, lamps, weapons or other equipment.
  • FIG. 1 shows a telescopic mast in cross-section and in partially extended position
  • FIG. 2 shows a telescopic mast in collapsed position
  • FIG. 3 shows a telescopic mast as seen from the bottom.
  • a telescopic mast 1 with two telescoping joints 2 which thus consists of three telescoping sections 3, 4, 5, here shown in partially extended position.
  • linear actuators which here appear as gas springs with piston rod 6 and cylinder housing 7.
  • gas springs 6, 7 are mounted mutually displaced or offset at the inner periphery in the telescopic mast so that the gas springs 6, 7 do not interfere with each other when drawing the telescopic mast 1 together.
  • a pull cord 8 e.g. a steel wire, which is connected to the top 9 of the telescopic mast and extends down to the bottom 10 of the telescopic mast 1 and on to a not shown reel or the like, upon which the pull cord 8 may be rolled up for pulling the telescopic mast 1 down, or wherefrom it may be slackened in order to extend the telescopic mast 1 partly or entirely.
  • a helical cable or conductor 11 which by extension of the telescopic mast 1 is extended and also collapsed when drawing the mast 1 together.
  • This helical cable 11 may be an electric conductor for conducting electricity for powering equipment in top 9 of the telescopic mast, but may also be a conductor for various electric signals, such as radio waves or the like.
  • fig. 2 appears a telescopic mast 1 where all telescopic sections 3, 4, 5 are drawn together, thus not taking up substantially more space than one telescoping section 3.
  • the gas springs 6, 7 and pull cord 8 are shown in the telescopic mast 1 in the most collapsed position.
  • Fig. 3 the telescopic mast 1 is seen from the bottom 10, where the positions of gas springs 6, 7 appear along the internal periphery of the telescoping sections 3, 4, 5.
  • two connected gas springs 12 are fitted for one telescoping joint 2 and two other connected gas springs 13 for the other telescoping joint 2.
  • the individual telescoping section 3, 4, 5 is not acted on asymmetrically as a consequence of the gas spring not being disposed at centre of the telescopic mast 1.
  • a mast with only one gas spring or actuator may operate in a satisfactory way if this problem is taken into account at the design stage of the telescoping joints 2.
  • actuators 12, 13 which are balanced in strength in relation to the weight of the actual telescoping section 3, 4, 5.
  • an actuator 12, 13 with somewhat lesser strength may thus be used at the uppermost telescoping joint 2 as in the gradually larger, underlying telescoping joints 2.
  • the helical cable 11, here shown with guide connections 14 connected with the draw cord 8, is seen inside the telescopic mast. These guide connections ensure that the helical cable 11 does not get jammed inside the telescopic mast 1 and that it is pulled out evenly in connection with the extending of the telescopic mast 1, as the guide connections 14 are fixed to the draw cord 8 with even spacing.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Actuator (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Studio Devices (AREA)
  • Auxiliary Devices For Music (AREA)

Abstract

The present invention concerns a telescopic mast (1) which at least includes one or more telescoping joints (2), where a telescoping joint consists of two telescoping sections dimensioned so that one section can be moved into another section, where between each of two adjacent telescoping sections in a telescoping joint there is provided at least one actuator (6) urging the adjacent telescoping sections away from each other, where these actuators are disposed internally of the telescoping joints and offset at the internal periphery. By disposing actuators offset at the inner periphery of the telescoping sections, several advantages are achieved. The actuators are provided at a protected location, and the actuators may be designed with lengths overlapping each other when the telescopic mast is collapsed.

Description

Telescoping Mast
Field of the Invention
The present invention concerns a telescopic mast including at least one or more telescoping joints with parallel walls, where one of two adjacent telescoping sections is narrower than the other of the two adjacent telescoping sections, so that a first telescoping section can be moved into and out of, respectively, of a second telescoping section in a telescoping joint as well as the second section may be moved into and out of a third telescoping section in a further telescoping joint, where between each of two adjacent telescoping sections in a telescoping joint there is provided at least one actuator, preferably several actuators, adapted to urge the adjacent telescoping sections away from each other, where these actuators are disposed internally of the telescoping joints.
Description of Prior Art There are many kinds of telescopic masts of which some can be extended automatically. In connection with such telescopic masts for military applications, there are particular requirements to usability and to operability in extreme situations and weather conditions as well.
US 4,151,534 describes a free-standing mast for an antenna including a number of telescoping tubes. US 4,137,535 describes a telescopic mast which is controlled pneumatically. The mast includes a number of telescoping tubes that may be collapsed in a base section. A piston is integrated in each section. None of these inventions fulfil the requirements to a simple, efficient and sturdy solution.
Telescopic masts can be very high and may be used for sensors and weapons as well as for pointing out targets. High telescopic masts contain many telescoping sections and it is expedient that the latter are not heavier or larger in size than necessary. In order to live up to requirements to reliability and sturdy construction, it is a clear disadvantage for a telescopic mast if the technology comprises frail technical solutions wherein failures may arise, causing the telescopic mast not be operated rapidly, accurately and under all conditions. In connection with high telescopic masts it is thus very advantageous if these are built up of simple components which, irrespectively of the conditions, provide a simple and uncomplicated use and operation. None of the prior art solutions fulfil these demands.
Object of the Invention
The object of the present invention is to provide a telescopic mast wherein the mast may be extended and collapsed rapidly, and wherein the mechanism therefore is simple and efficient.
Description of the Invention
As mentioned in the introduction, the invention concerns a telescopic mast which at least includes one or more telescoping joints, where a telescoping joint consists of two telescoping sections dimensioned so that one section can be moved into another section, where between each of two adjacent telescoping sections in a telescoping joint there is provided at least one actuator urging the adjacent telescoping sections away from each other, where these actuators are disposed internally of the telescoping joints and mutually offset at the internal periphery, and wherein at least one actuator and preferably several actuators mounted in a telescoping joint are independent of one or more further actuators which are mounted in one or more further telescoping joints or in the same telescoping joint.
By disposing actuators offset at the inner periphery of the telescoping sections, several advantages are achieved. The actuators are provided at a protected location, and the actuators may be designed with lengths overlapping each other when the telescopic mast is collapsed. Exactly this technical feature makes this solution substantially different from prior art solutions, as the latter are often equipped with serially connected actuators which thus only allow the collapsed telescopic mast to be drawn together to the sum of the length of the actuators. The advantage achieved by the protecting internal disposition is particularly attractive in connection with using a mast according to the invention for military purposes, where a mast with visible actuators may possibly be destroyed by firing at the visible actuators. By a telescopic mast according to the invention where the at least one actuator and preferably several actuators are mounted in a telescoping joint and are independent of one or more further actuators which are mounted in one or more further telescoping joints or in the same telescoping joint, great reliability is achieved. By such a solution is achieved a mechanically simple and sturdy construction where two adjacent telescoping sections by triggering an extending of the mast are urged away from each other by an actuator mechanism which is not mechanically connected to other corresponding actuator mechanisms in further telescoping joints in the same telescoping mast. This extension is effected without using complicated cord or wire connections that extend the mast via pulleys and the like. By placing the actuators in the telescoping joints so that they are mutually offset in each section, as mentioned above there is achieved the great advantage that the telescopic mast may be collapsed or drawn together more than traditional telescopic masts with built-in actuators.
Moreover, a more sure operation is achieved by having several actuators, e.g. 2, 3 or maybe even 6 or more actuators at each telescoping joint. By a system according to the invention, if one actuator is damaged none but that particular actuator will be influenced. If a telescoping joint only has one actuator and this is damaged, the joint in question will no longer be able to be pressed out, but the mast as a whole will only suffer from the disadvantage that it is no longer extended in full length. If, however, there are more actuators at every joint, the mast may be used in full length irrespectively of one or possibly more actuators being damaged. By such a solution is achieved a telescopic mast with great redundancy.
One variant of a telescopic mast is equipped with actuators of the type linear actuators, where the direction of movement is substantially parallel with the longitudinal direction of the telescoping sections. A preferred actuator type is the so-called gas springs. The choice of actuators may of course be adapted to need, and possibly other combinations of various types may be used, including electric, hydraulic or pneumatic actuators, and unmentioned types may be applied as well.
Particularly actuators of the type called gas springs are suited for use in connection with a telescopic mast according to the invention, as no other operations are to be performed other than triggering the mast for pushing it out to the desired length. Furthermore, it is advantageous that if an actuator of this type is damaged, the mast may still be pulled down, the actuator being easy to replace and not requiring filling of pressurised fluid, such as oil or air, and no connecting to an electric system either. It is thus not the entire actuator system that is paralysed if a single actuator is damaged, and the mast is still at least partly operational.
Furthermore, an advantage by a mast with actuators as disclosed is that it may be extended without using external connections, thus not requiring a noisy pump in order to be extended. Extension as well as collapsing may thus be performed without disturbing noise.
A telescopic mast according to the invention may be designed such that the telescoping sections are constituted by cylindric profiles. However, in a particularly preferred embodiment, the telescoping sections can be designed as edged profiles, more specifically as octagonally profiled pipes which advantageously may be wound fibre composite tubes, e.g. carbon fibre reinforced epoxy tubes. Pipes or tubes of this kind have the great advantage that they are very rigid, and if they are made of carbon fibre reinforced epoxy, they are at the same time very light compared with other fibre composites or metals. In that way is achieved a stable and light telescopic mast with very high rigidity and strength.
In a particularly preferred variant of the telescopic mast according to the invention, the telescoping sections may be drawn together by a draw wire which is fastened internally at the upper end of the telescopic mast. The draw wire may, for example, be fastened at the uppermost and thinnest telescoping section and thus run inside the mast, where it is rolled up on a reel at the foot of the mast. This rolling up may be effected manually, hydraulically or by another suitable method. A clear advantage is, however, that the mast may be drawn back manually at any time in case of occurring supply problems with the usual drive power. Such a withdrawal may possibly be effected by a crank handle or by an electric drill or similar. The internally disposed actuators may be of a type that may be locked at any position, but preferably there is used a type which is normally extended and held back by the said draw wire. By extending a telescopic mast by such actuators, the mast will typically be extended from the bottom so that the largest telescoping joints are extended at first and the lesser ones subsequently, as the actuators in these telescoping joints will be the strongest. However, there may also be masts adapted for extending all sections at one and the same time.
hi addition, the actuators may be provided with the option of being locked at various positions corresponding to various heights. Such a locking may be effected manually or via remote control to one or more actuators or to a device in connection with one or more actuators.
A mast may thus be extended and locked at a certain height. At the same time, in this way it may be controlled which telescoping joints are to be extended and how much the individual joints are to be extended.
A telescopic mast according to the invention may advantageously be designed so that a pipe is provided inside the telescoping sections. Supply lines and cables of various kinds used in connection with equipment disposed at the top of the telescopic mast may be arranged in this pipe. For example, this may be antenna equipment, surveillance equipment, lamps, weapons or other equipment.
Short Description of the Drawing The invention is described in more detail with reference to the drawing, wherein:
FIG. 1 shows a telescopic mast in cross-section and in partially extended position; FIG. 2 shows a telescopic mast in collapsed position. FIG. 3 shows a telescopic mast as seen from the bottom.
Detailed Description of the Invention hi Fig. 1 appears a telescopic mast 1 with two telescoping joints 2 which thus consists of three telescoping sections 3, 4, 5, here shown in partially extended position. Internally of the telescopic mast 1 is seen linear actuators which here appear as gas springs with piston rod 6 and cylinder housing 7. These gas springs 6, 7 are mounted mutually displaced or offset at the inner periphery in the telescopic mast so that the gas springs 6, 7 do not interfere with each other when drawing the telescopic mast 1 together.
Furthermore, there is seen a pull cord 8, e.g. a steel wire, which is connected to the top 9 of the telescopic mast and extends down to the bottom 10 of the telescopic mast 1 and on to a not shown reel or the like, upon which the pull cord 8 may be rolled up for pulling the telescopic mast 1 down, or wherefrom it may be slackened in order to extend the telescopic mast 1 partly or entirely. Furthermore, there is seen a helical cable or conductor 11 which by extension of the telescopic mast 1 is extended and also collapsed when drawing the mast 1 together. This helical cable 11 may be an electric conductor for conducting electricity for powering equipment in top 9 of the telescopic mast, but may also be a conductor for various electric signals, such as radio waves or the like. By placing such a helical conductor 11 inside the mast there is achieved the obvious advantage that the conductor is provided in a protected environment where it is not damaged during transport or during use.
In fig. 2 appears a telescopic mast 1 where all telescopic sections 3, 4, 5 are drawn together, thus not taking up substantially more space than one telescoping section 3. The gas springs 6, 7 and pull cord 8 are shown in the telescopic mast 1 in the most collapsed position.
In Fig. 3, the telescopic mast 1 is seen from the bottom 10, where the positions of gas springs 6, 7 appear along the internal periphery of the telescoping sections 3, 4, 5. In the shown variant, two connected gas springs 12 are fitted for one telescoping joint 2 and two other connected gas springs 13 for the other telescoping joint 2. By such a solution, the individual telescoping section 3, 4, 5 is not acted on asymmetrically as a consequence of the gas spring not being disposed at centre of the telescopic mast 1. However, it is obvious that a mast with only one gas spring or actuator may operate in a satisfactory way if this problem is taken into account at the design stage of the telescoping joints 2. By a solution as described, it is possible to use actuators 12, 13 which are balanced in strength in relation to the weight of the actual telescoping section 3, 4, 5. Typically, an actuator 12, 13 with somewhat lesser strength may thus be used at the uppermost telescoping joint 2 as in the gradually larger, underlying telescoping joints 2.
The helical cable 11, here shown with guide connections 14 connected with the draw cord 8, is seen inside the telescopic mast. These guide connections ensure that the helical cable 11 does not get jammed inside the telescopic mast 1 and that it is pulled out evenly in connection with the extending of the telescopic mast 1, as the guide connections 14 are fixed to the draw cord 8 with even spacing.

Claims

1. A telescopic mast including at least one or more telescoping joints with parallel walls, where one of two adjacent telescoping sections is narrower than the other of the two adjacent telescoping sections, so that one telescoping section can be moved into and out of, respectively, of a second telescoping section in a telescoping section as well as the second section may be moved into and out of a third telescoping section in a further telescoping joint, where between each of two adjacent telescoping sections in a telescoping joint there is provided at least one actuator, preferably several actuators, adapted to urge the adjacent telescoping sections away from each other, where these actuators are disposed internally of the telescoping joints, characterised in that the actuators are mutually offset at the internal periphery, and that at least one actuator and preferably several actuators mounted in a telescoping joint are independent of one or more further actuators which are mounted in one or more further telescoping joints or in the same telescoping joint.
2. Telescopic mast according to claim 1, characterised in that the actuators are linear actuators where the direction of movement is substantially parallel with the longitudinal direction of the telescoping sections.
3. Telescopic mast according to any of claims 1 -2, characterised in that the actuators are gas springs.
4. Telescopic mast according to claim 3, characterised in that the actuators are manually lockable pressurised gas springs.
5. Telescopic mast according to claim 3, characterised in that the actuators are remotely controlled lockable pressurised gas springs.
6. Telescopic mast according to any of claims 1 -5, characterised in that the telescoping sections are constituted by cylindric profiles.
7. Telescopic mast according to any of claims 1 -5, characterised in that the telescoping sections are constituted by edged profiles.
8. Telescopic mast according to any of claims 1 -7, characterised in that the telescoping sections are drawn together by a draw wire which is fastened internally at the upper end of the telescopic mast.
9. Telescopic mast according to any of claims 1 -8, characterised in that a pipe is provided inside the telescoping sections.
PCT/DK2008/000133 2007-04-16 2008-04-15 Telescoping mast WO2008125110A2 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
AU2008238435A AU2008238435B2 (en) 2007-04-16 2008-04-15 Telescoping mast
SI200831841T SI2147174T1 (en) 2007-04-16 2008-04-15 Telescoping mast
NZ581080A NZ581080A (en) 2007-04-16 2008-04-15 Telescoping mast with gas sping actuators to force sections of the mast apart
PL08758200T PL2147174T3 (en) 2007-04-16 2008-04-15 Telescoping mast
EP08758200.3A EP2147174B1 (en) 2007-04-16 2008-04-15 Telescoping mast
CA2683981A CA2683981C (en) 2007-04-16 2008-04-15 Telescoping mast
DK08758200.3T DK2147174T3 (en) 2007-04-16 2008-04-15 Telescopic mast with gas damper
ES08758200.3T ES2638001T3 (en) 2007-04-16 2008-04-15 Telescopic mast
US12/596,266 US8661744B2 (en) 2007-04-16 2008-04-15 Telescoping mast
IL201536A IL201536A0 (en) 2007-04-16 2009-10-15 Telescoping mast
HRP20171132TT HRP20171132T1 (en) 2007-04-16 2017-07-21 Telescoping mast

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA200700552 2007-04-16
DKPA200700552 2007-04-16

Publications (2)

Publication Number Publication Date
WO2008125110A2 true WO2008125110A2 (en) 2008-10-23
WO2008125110A3 WO2008125110A3 (en) 2009-01-29

Family

ID=39739779

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DK2008/000133 WO2008125110A2 (en) 2007-04-16 2008-04-15 Telescoping mast

Country Status (14)

Country Link
US (1) US8661744B2 (en)
EP (1) EP2147174B1 (en)
AU (1) AU2008238435B2 (en)
CA (1) CA2683981C (en)
DK (1) DK2147174T3 (en)
ES (1) ES2638001T3 (en)
HR (1) HRP20171132T1 (en)
HU (1) HUE036337T2 (en)
IL (1) IL201536A0 (en)
NZ (1) NZ581080A (en)
PL (1) PL2147174T3 (en)
PT (1) PT2147174T (en)
SI (1) SI2147174T1 (en)
WO (1) WO2008125110A2 (en)

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ITTO20130850A1 (en) * 2013-10-18 2015-04-19 Drillmec Spa TELESCOPIC DRILLING ANTENNA AND ASSOCIATED DRILLING SYSTEM.
CN113594961A (en) * 2021-07-15 2021-11-02 国网宁夏电力有限公司培训中心 New-type flexible interim cross arm device of hand formula of 10kV net distribution live working
IT202000015883A1 (en) * 2020-07-01 2022-01-01 Francesco Pelizza TELESCOPIC SUPPORT INCLUDING INTERNAL WIRING
EP3788217A4 (en) * 2018-05-01 2022-03-02 FALCK-SCHMIDT, Jan Telescopic mast
EP3933148A4 (en) * 2019-05-23 2022-04-20 Jong Hee Lee Telescopic mast

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