CN200971748Y - Telescopic ladder - Google Patents
Telescopic ladder Download PDFInfo
- Publication number
- CN200971748Y CN200971748Y CN 200620126631 CN200620126631U CN200971748Y CN 200971748 Y CN200971748 Y CN 200971748Y CN 200620126631 CN200620126631 CN 200620126631 CN 200620126631 U CN200620126631 U CN 200620126631U CN 200971748 Y CN200971748 Y CN 200971748Y
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- ladder
- plane
- column
- shank
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Abstract
An extension ladder is disclosed. An extension structure of the ladder is made up of n split joined sections (1) (n stands for positive integer equal to or larger than 3); a locking device is provided between two neighboring sections (1). The extension ladder has following characteristics: each U-shaped section (1) is formed by two parallel posts (2) and a rail (3) connected at lower end of the two posts (2); section material of the same section is adopted for 2n posts (2); a sliding chute (5) is fixed on one side of the section, and a sliding rib (4) is fixed on the other side; two posts (2) of the same section (1) are positioned in bilateral symmetry; the sliding chute (5) or a sliding rib (4) at outer side of two posts (2) of all sections (1) are sliding connected to the sliding chute (5) or sliding rib (4) at outer side of two posts (2) of the next section (1) along the length direction of the posts (2). In this way, n sections (1) are sliding nested into an expansion structure from top down. Section material of the same section is adopted for posts of all sections of the utility model, which saves materials and substantially cuts down production cost.
Description
Technical field
The utility model relates to a kind of ladder, is specifically related to a kind of telescopic ladder.This ladder can be used as the movable type instrument of climbing to a higher point and uses, and can draw in when not using and be convenient to move and collect; Also can its upper end be fixed on the loft entrance and use, when not using, can draw in to turn over to loft and stash as loft ladder.
Background technology
The ladder that is used for ascend operation is widely used in production, various fields in life such as building, installation, family.And original ladder all is fixed, and is very long, volume is big, can not fold, and exists carrying, moves inconvenient and the collection big defective that takes up room.
Therefore, extension ladder had appearred afterwards, announced on February 6th, 2002 disclosed as Chinese patent, the patent No. is 95117319.7 patents of invention that are called " telescopic ladder ", the ladder that a kind of integral body is in the longitudinal direction drawn in, shortened is disclosed in this patent scheme, it comprises the section of ladder of n section " Jiong " font, and every section section of ladder has column and crossbeam that is connected with the column upper end of a pair of hollow parallel to each other and that be provided with at interval; The column through hole that extends is from the top down all arranged in every root post along its length, and the column of each section section of ladder injects and is close to it and hangs down socket connection in column through hole of one section than it; And between each section section of ladder, be provided with gripping mechanism and tripper, lock and release under the ladder deployed condition by gripping mechanism and tripper.Though above-mentioned ladder can launch and folding easily, but the column in its each section section of ladder is set up the hollow pillar stand of post through hole in all being, in other words can be understood as employing tubing, this has just brought following defective: 1, in the above-mentioned extension ladder, for guaranteeing that the intensity that supports must guarantee that every root post tubing all has certain pipe thickness, the diameter of each section column tubing increases successively from top to bottom, consumption material so very, particularly work as section of ladder quantity for a long time, the column of the section of ladder of hypomere must adopt the very thick tubing of diameter, and cost of manufacture is higher; 2, the thickness of the column of each section section of ladder changes successively, and they mutually can not be general, the cost of manufacture height, and make inconvenient.
Summary of the invention
The utility model is for solving the consumption material that prior art exists, and the technical problem that cost of manufacture is high provides a kind of new-type extension ladder.
For achieving the above object, the technical solution adopted in the utility model is: a kind of extension ladder, its stretching structure is spliced to form by n section section of ladder, n is 〉=3 positive integer, be provided with locking device between adjacent two sections section of ladders, its innovative point is: every section section of ladder constitutes " " shape structure by two columns that be arranged in parallel and a crosspiece that is connected between the two root post lower ends; Described 2n column adopts the cross section identical profiles, one side in its cross section is provided with chute, and opposite side is provided with sliding muscle, two root posts of same section section of ladder are symmetrically arranged, the sliding muscle or the chute of the chute in two columns of each section of ladder outside or two column inboards of sliding muscle and adjacent next section section of ladder are slidingly connected along the strut length direction, with this n section section of ladder nested formation stretching structure that slides from top to bottom.
Technique scheme comprises following further scheme:
1, in the such scheme, described chute cooperates with sliding muscle, makes between column column and adjacent next section section of ladder of each section section of ladder only to exist one to go up the degree of freedom of slip along its length.
2, in the such scheme, the preferable rod member that adopts tabular of described column, the thickness on its left and right directions is littler than the width on the fore-and-aft direction; So the flat column of each section section of ladder on left and right directions in its gross thickness of foreign minister's poststack not thick yet, saved material.
3, in the such scheme, described locking device can adopt existing various bayonet lock positioner, but be preferably the following scheme that adopts: described locking device is made of a latch gear and insert cooperation, described latch gear comprises shank, locating hole and acts on spring on the shank, described shank head is located in the crosspiece of section of ladder towards vertical column expanding, offer locating hole corresponding to the shank head on the column lap of this section of ladder under the deployed condition and adjacent next section of ladder, described spring force forces the shank head to cooperate with the locating hole embedding; Towards the shank head and be tilted to and be provided with a release inclined-plane, the corresponding described release inclined convex of described insert is located at the soffit of the crosspiece of an adjacent last section of ladder on the described shank; When an adjacent last section of ladder drew on this section of ladder, its insert offseted with the release inclined-plane and cooperates, and promoted the disengaging locating hole that contracts in the shank.Further preferred plan is again: also be provided with inclined-plane, a location on the described shank, inclined-plane, location and release inclined-plane towards antithesis, both are provided with face-to-face, are an embedding room between the two; Described insert embeds the corresponding coupling in room with this, and each corresponding release inclined-plane and inclined-plane, location are provided with and embed the auxiliary section on it, and this two embeddings auxiliary section is the inclined-plane that contacts with the inclined surface complementation; When an adjacent last section of ladder drew on this section of ladder, insert inserted and embeds in the room, and one on it embeds the auxiliary section and contact with the release inclined-plane when cooperating, and another embeds the auxiliary section and cooperates the location with the inclined-plane, location.Like this when the locating hole on the column staggers mutually, shank is just not protractile, be that insert remains at mated condition with the inclined-plane, location, the rounding state location that insert hook retaining will be gone up on the inclined-plane, location between a section of ladder and this section of ladder has been lived, have only when adjacent next section section of ladder launches, locating hole on it has been aimed at the shank head of this section section of ladder, and shank just can protrude laterally, has just removed the positioning states of rounding state this moment.
In general, locking device can be set in the crosspiece of one section section of ladder of bottommost, therefore it can not come off launch voluntarily in order to locate the final section section of ladder, should between one section section of ladder of bottommost and second from the bottom section section of ladder, detent mechanism be set, the existing various easy elastic positioning machine structure of the structure of this detent mechanism.Like this, because of between one section section of ladder of bottommost and second from the bottom section section of ladder one elastic positioning machine structure being arranged, remove this location without external force, one section of bottommost is not unfolded, one section of bottommost does not launch on it locating hole can not aim at the second from the bottom section shank head on the section of ladder, and therefore the locking device of second section section of ladder can release yet, and in like manner each that makes progress section section of ladder all can be positioned at rounding state, only untie the location of the rounding state of one section section of ladder of bottommost, just can make progress successively and launch each section section of ladder one by one.
4, in the such scheme, one section section of ladder of described top is hinged on the installing rack by the rotating shaft of left and right directions setting.This installing rack can be fixed on loft mouth place during use, this extension ladder promptly becomes a loft ladder, be deployed condition during use and will launch to be inserted into ground from the loft mouth, when not using, with push rod it is upwards promoted to draw in into rounding state, upwards turn down to loft more afterwards, cover this ladder of loft plate and just hidden.Because when the loft ladder uses gathering, the gravity that need overcome each section of ladder upwards promotes to draw in, more laborsaving in order upwards to promote, can this extension ladder rear portion each side be provided with an auxiliary extension spring, this auxiliary extension spring is connected between the section of ladder of the section of ladder at top and bottom.Concrete the best is that auxiliary extension spring one end is connected on one section section of ladder at the top of extension ladder, and an end connects from second or the 3rd section section of ladder of bottom inverse.
The concrete meaning of some nouns and the noun of locality is explained as follows in the technique scheme:
1, in the such scheme, described " deployed condition " is meant that crosspiece between section of ladder and adjacent section of ladder is each other at a distance of the state of certain (predefined) spacing; " rounding state " is meant the state the when crosspiece between section of ladder and adjacent section of ladder contacts with each other.
2, in the such scheme, " forward and backward " carried is meant the direction on the ladder thickness, is example with Fig. 1, and the direction that penetrating among Fig. 1 passes paper is " forward and backward " that such scheme is carried; Described " upper and lower " is to decide by the user mode of this ladder, and after this ladder used and sets up, as shown in Figure 1, its top and below promptly were " upper and lower " that such scheme is carried.
Because the technique scheme utilization, the utility model compared with prior art has following advantage:
1, the column owing to each section of ladder from top to bottom of the present utility model adopts the cross section identical profiles to make, and this adopts from big with prior art and compares as column to little tubing, in the assurance support strength, has saved material, has significantly reduced cost of production.
2, because the column in each section of ladder of the present utility model adopts the identical section bar in cross section, therefore each section of ladder column can be general, exchange, make to need only when producing and produce a kind of standard component assembling, simplified production routine, also further reduced cost of production from another point of view.
3, because the utility model has adopted new-type locking device, this locking device has possessed the positioning action of the locking action and the rounding state of deployed condition simultaneously, this extension ladder can not launched under rounding state voluntarily, carrying is got up more convenient, and this point also makes this extension ladder be hung on the eminence use and can draw in as the loft ladder becomes possibility.
Description of drawings
Accompanying drawing 2 is the overall structure main body schematic diagram of the utility model embodiment, represents rounding state among the figure;
Accompanying drawing 3 is the flexible schematic diagram of local three sections section of ladders among the utility model embodiment;
Accompanying drawing 4 is an A place operating state schematic diagram one in the accompanying drawing 3, locating hole among the figure on the section of ladder column of expression bottom and the shank head misalignment on the section of ladder of middle part, and the section of ladder at middle part becomes to draw in the state of location;
Accompanying drawing 5 is an A place operating state schematic diagram two in the accompanying drawing 3, and the locating hole among the figure on the section of ladder column of expression bottom is aimed at the shank head on the section of ladder of middle part, and the section of ladder at middle part can be removed the state that launch the location at once;
Accompanying drawing 6 is the syndeton schematic perspective view of local three sections section of ladders among the utility model embodiment;
Accompanying drawing 7 is the decomposing schematic representation of one section section of ladder of part among the utility model embodiment;
Accompanying drawing 8 is the local enlarged diagram in B place in the accompanying drawing 7;
Accompanying drawing 9 is the schematic diagram of shank among the utility model embodiment;
Accompanying drawing 10 is the decomposing schematic representation of shank among the utility model embodiment;
Accompanying drawing 11 is the structural representation of two sections section of ladder parts of the utility model embodiment top;
Accompanying drawing 12 is the column schematic cross-section of adjacent two section of ladders among the utility model embodiment.
In the above accompanying drawing: 1, section of ladder; 2, column; 3, crosspiece; 4, slide muscle; 5, chute; 6, latch gear; 7, shank; 8, locating hole; 9, spring; 10, release inclined-plane; 11, inclined-plane, location; 12, embed the auxiliary section; 13, embed the auxiliary section; 14, embed the room; 15, insert; 16, housing; 17, swing component; 18, projection; 19, pivot; 20, extension; 21, dead slot mouth; 22, locating slot; 23, roller; 24, elasticity spacer; 25, projection; 26, standing block hole; 27, installing rack; 28, auxiliary extension spring; 29, extension ladder; 30, stopper; 31, adjustment hole; 32, limited block; 33, tabs.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further described:
Embodiment: shown in accompanying drawing 1, accompanying drawing 2, a kind of extension ladder 29, its concrete aluminium extruded sections that adopts is made, and can be used as flexible loft ladder and use, its stretching structure is spliced to form by n section section of ladder 1, n is 〉=3 positive integer, is provided with locking device between adjacent two sections section of ladders 1, and every section section of ladder 1 constitutes " " shape structure by two columns that be arranged in parallel 2 and a crosspiece 3 that is connected between two root posts, 2 lower ends; A described 2n column 2 adopts the cross section identical profiles, before and after its outside, cross section along on establish a pair of chute 5, and the front and back of inboard, cross section along on establish a pair of sliding muscle 4 (seeing the column cross section shown in the accompanying drawing 12 for details); Two root posts 2 of same section section of ladder 1 are symmetrically arranged, the chute 5 in two columns, 2 outsides of the preceding paragraph section of ladder 1 is slidingly connected along column 2 length directions with the sliding muscle 4 of two columns, 2 inboards of next section section of ladder 1, with this n section section of ladder 1 nested formation stretching structure that slides from top to bottom.(seeing for details shown in the accompanying drawing 3,6,7).And a pair of chute 5 cooperates with a pair of sliding muscle 4, makes 2 on column column 2 and next section section of ladder 1 of the preceding paragraph section of ladder 1 only exist one to go up the degree of freedom (seeing the column cross section shown in the accompanying drawing 12 for details) of sliding along its length.
Shown in accompanying drawing 3,6,7,12, the column 2 of whole extension ladder 29 all is to adopt the rod member section bar of tabular to make, and their thickness is all thinner.
Shown in accompanying drawing 3,4,5,7, in extension ladder 29, between each section of ladder locking device is set, this locking device is arranged on latch gear 6 in the section of ladder crosspiece 3 and a correspondence by one and is convexly equipped with on adjacent insert 15 on a section of ladder crosspiece 3 soffits and cooperates and constitute; Described latch gear 6 comprises shank 7, locating hole 8 and acts on spring 9 on the shank 7, described shank 7 heads are towards column 2 flexible being located in the crosspiece 3 of section of ladder 1, the column 2 of adjacent section of ladder 1 is offered above-mentioned locating hole 8 corresponding to shank 7 heads under deployed condition with on the lap of this section of ladder 1 column 2, described spring 9 active forces force shank 7 heads to embed with locating hole 8 to cooperate; And shank 7 one sides are provided with tabs 33, are stuck in 2 pairs of shanks of column, 7 overhanging states by this tabs 33 and carry out spacing (seeing shown in the accompanying drawing 10).
Shown in accompanying drawing 9 and accompanying drawing 10, described shank 7 is made of the roller 23, stopper 30 and the swing component 17 that hold backward in a housing 16 and the housing 16 in the past; So that roller to be set, to be against on column 2 inner faces with roller and to roll in the described shank head, reduce friction; Stopper 30 fixedly is embedded in housing 16, and the rear portion of swing component 17 is erected at through pivot 19 between the left and right sides sidewall of housing 16, and an extension 20 is extended in bending downwards on the rearward end of swing component 17; Swing component 17 heads and stopper 30 leave one and insert room 14; The front end of swing component 17 is provided with separates pin inclined-plane 10, and the rear end of stopper 30 is provided with inclined-plane 11, location, release inclined-plane 10 is towards front end shank 7 head side and tilt upward, and inclined-plane 11, location and release inclined-plane 10 be towards antithesis, and it is towards the afterbody of rear end shank 7 and tilt downwards; Release inclined-plane 10 parallels with inclined-plane 11, location, and its gradient is 40 ° and 135 °.And corresponding shank 7 upper surfaces are provided with dead slot mouth 21 on the crosspiece 3, and swing component 17 and stopper 30 all are exposed on the upper surface of crosspiece 3.At this stopper 30 is a separate piece, employing be soft aluminium, certainly without stopper, and directly extend oblique sheet from housing 16, set an inclined-plane 11, position thereon and also can.
See shown in Figure 3, with above-mentioned latch gear 6 corresponding inserts 15 be with shank 7 on insertion room 14 be complementary, also corresponding release inclined-plane 10 is provided with inclined-plane 11, location and embeds auxiliary section 12 and 13 on the insert 15, and this embedding auxiliary section 12 and 13 is and the inclined-plane of release inclined-plane 10 with inclined-plane, location 11 corresponding complementary; When an adjacent last section of ladder 1 draws on this section of ladder 1, insert 15 embeds and inserts in the room 14, embedding auxiliary section 12 on it offsets with release inclined-plane 10 and cooperates, and promotes to contract in the shank 7 to break away from locating hole 8, and another on it embeds auxiliary section 13 and contact cooperation with inclined-plane 11, location simultaneously.At this, be to have adopted an insert 15, on insert 15, not only establish embedding auxiliary section 12 but also establish embedding auxiliary section 13, cooperate with release inclined-plane 10 and inclined-plane 11, location simultaneously with this, this is a preferred plan; But, also can adopt two inserts in the reality, inclined-plane 11, an insert corresponding matching release inclined-plane 10, one insert corresponding matching location.
Shown in accompanying drawing 3, accompanying drawing 8, accompanying drawing 9, the left and right sides of described swing component 17 front ends is provided with projection 18, and described spring 9 is a stage clip, and it is pressed on the extension 20 from the rear end, and promotion shank 7 protracts and makes and puts on swing component 17 front ends; And corresponding projection 18 is provided with locating slot 22 on the bead of dead slot mouth 21, swing component 17 is under last pendulum state, its front end embeds in the dead slot mouth 21, front end upper protruding block 18 embeds with locating slot 22 and cooperates, with this shank 7 is located under the state of protracting, prevent that shank 7 heads are subjected to after the external force effect misoperation to take place, increased the reliability of deployed condition locking.
Shown in accompanying drawing 1 and accompanying drawing 2, more convenient in order to use, in the crosspiece 3 of the one section section of ladder 1 in top of this extension ladder latch gear 6 is not set, and latch gear 6 and insert 15 are not set in the crosspiece 3 of two sections section of ladders 3 of bottommost yet, all be provided with latch gear 6 and insert 15 on other each section of ladders 1 of middle part.Like this under rounding state, the elastic positioning machine structure that other should be set on two sections section of ladders 1 of bottommost positions, for example: crosspieces 3 stretch out an elasticity spacer 24 to another person's crosspiece, this elasticity spacer 24 is provided with a projection 25, respective protrusions 25 is provided with a location hole clipping 2 on another person's the crosspiece relatively, when both were rounding state, the projection 25 on the elasticity spacer 24 embedded location in the standing block hole 26.
Shown in accompanying drawing 1 and accompanying drawing 2, this extension ladder rear portion each side be provided with an auxiliary extension spring 28, this auxiliary extension spring 28 is connected the section of ladder 1 at top and from the bottom between third from the bottom section the section of ladder 1.And the rotating shaft by the left and right directions setting on one section section of ladder 1 of top is hinged on the installing rack 27, when using with this, installing rack can be vertically mounted on the sidewall of loft mouth, and as shown in Figure 1 deployed condition during use directly extends ground from loft; Can upwards promote this extension ladder with push rod when not using, i.e. past next gathering that links successively of extension ladder from the top, till the elastic positioning machine structure between two sections section of ladders of bottommost is also locked, whole extension ladder was positioned at rounding state as shown in Figure 2 and can launch voluntarily this moment, turn over extension ladder on then can be again, extension ladder is ploughed under in the loft mouth, shut this extension ladder of loft door and promptly be hidden.
Shown in accompanying drawing 11, on the first section section of ladder 1 in top latch gear 6 is not set, tease and ridicule knothole 31 and on its column 2, offered one, be fixed with limited block 32 on the adjustment hole 31 therein, the column of second section section of ladder 1 is slidingly connected on first section section of ladder 1, and the extremity piece on column 2 tops of second section section of ladder 1 cooperates with limited block 32, passes through to regulate the position of limited block 32 on first section section of ladder 1 with this, can regulate the entire length after extension ladder 29 launches by the needs of use occasion floor height.
The foregoing description only is explanation technical conceive of the present utility model and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present utility model and enforcement according to this, can not limit protection domain of the present utility model with this.All equivalences of doing according to the utility model spirit essence change or modify, and all should be encompassed within the protection domain of the present utility model.
Claims (7)
1, a kind of extension ladder, its stretching structure is spliced to form by n section section of ladder [1], n is 〉=3 positive integer, be provided with locking device between adjacent two sections section of ladders [1], it is characterized in that: every section section of ladder [1] constitutes " " shape structure by two columns that be arranged in parallel [2] and a crosspiece [3] that is connected between two root posts [2] lower end; A described 2n column [2] adopts the cross section identical profiles, one side in its cross section is provided with chute [5], and opposite side is provided with sliding muscle [4], two root posts [2] of same section section of ladder [1] are symmetrically arranged, inboard sliding muscle [4] or the chute [5] of the chute [5] in two columns [2] of each section of ladder [1] outside or sliding muscle [4] and two columns [2] of adjacent next section section of ladder [1] is slidingly connected along column [2] length direction, with this n section section of ladder [1] nested formation stretching structure that slides from top to bottom.
2, a kind of extension ladder according to claim 1 is characterized in that: described chute [5] cooperates with sliding muscle [4], makes between the column [2] column [2] and adjacent next section section of ladder [1] of each section section of ladder [1] only to exist one to go up the degree of freedom of slip along its length.
3, a kind of extension ladder according to claim 1 is characterized in that: described column [2] is the rod member of tabular, and the thickness on its left and right directions is littler than the width on the fore-and-aft direction.
4, a kind of extension ladder according to claim 1, it is characterized in that: described locking device cooperates formation by a latch gear [6] and an insert [15], described latch gear [6] comprises shank [7], locating hole [8] and act on spring [9] on the shank [7], described shank [7] head stretches towards column [2] and is located in the crosspiece [3] of section of ladder [1], the column [2] of adjacent section of ladder [1] is offered above-mentioned locating hole [8] corresponding to shank [7] head under deployed condition with on the lap of this section of ladder [1] column [2], described spring [9] active force forces shank [7] head to embed with locating hole [8] to cooperate; Described shank [7] is gone up towards shank [7] head side and is inclined upwardly and is provided with a release inclined-plane [10], and described insert [15] corresponding described release inclined-plane [10] is convexly equipped with the soffit of the crosspiece [3] of a section of ladder on adjacent; When an adjacent last section of ladder [1] drew on this section of ladder [1], its insert [15] offseted with release inclined-plane [10] and cooperates, and promoted to contract in the shank [7] to break away from locating hole [8].
5, a kind of extension ladder according to claim 4 is characterized in that: also be provided with inclined-plane [11], a location on the described shank [7], inclined-plane, location [11] and release inclined-plane [10] towards antithesis, both are provided with face-to-face, are between the two one to embed room [14]; Described insert [15] embeds the corresponding coupling in room [14] with this, and each corresponding release inclined-plane [10] and inclined-plane, location [11] are provided with and embed auxiliary section [12,13] on it, and this two embedding auxiliary section [12,13] is the inclined-plane that contacts with the inclined surface complementation; When an adjacent last section of ladder [1] draws in when this section of ladder [1] is gone up, insert [15] inserts and embeds in the room [14], on it one embeds auxiliary section [12] and contacts with release inclined-plane [10] when cooperating, and another embeds auxiliary section [13] and cooperates the location with inclined-plane, location [11]; And, between the crosspiece of second from the bottom section section of ladder [1] detent mechanism is set at the crosspiece of last section section of ladder [1] and from the bottom from the bottom.
6, a kind of extension ladder according to claim 1 is characterized in that: one section section of ladder of described top [1] is hinged on the installing rack [27] by the rotating shaft of left and right directions setting.
7, a kind of extension ladder according to claim 1 is characterized in that: this extension ladder rear portion each side be provided with an auxiliary extension spring [28], this auxiliary extension spring [28] is connected between the section of ladder [1] of the section of ladder [1] at top and bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620126631 CN200971748Y (en) | 2006-10-30 | 2006-10-30 | Telescopic ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620126631 CN200971748Y (en) | 2006-10-30 | 2006-10-30 | Telescopic ladder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200971748Y true CN200971748Y (en) | 2007-11-07 |
Family
ID=38883004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620126631 Expired - Fee Related CN200971748Y (en) | 2006-10-30 | 2006-10-30 | Telescopic ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200971748Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951263A (en) * | 2012-11-15 | 2013-03-06 | 福建省马尾造船股份有限公司 | Rope ladder combined gangway ladder system for pilots |
| WO2017190615A1 (en) * | 2016-05-03 | 2017-11-09 | 厦门新技术集成有限公司 | Telescopic ladder |
| CN110453967A (en) * | 2019-08-12 | 2019-11-15 | 常州朗卓机电科技有限公司 | Mast auto-unlocking device |
| CN110847800A (en) * | 2019-04-08 | 2020-02-28 | 崇华科技永康有限公司 | Extension ladder |
-
2006
- 2006-10-30 CN CN 200620126631 patent/CN200971748Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102951263A (en) * | 2012-11-15 | 2013-03-06 | 福建省马尾造船股份有限公司 | Rope ladder combined gangway ladder system for pilots |
| WO2017190615A1 (en) * | 2016-05-03 | 2017-11-09 | 厦门新技术集成有限公司 | Telescopic ladder |
| US11142949B2 (en) | 2016-05-03 | 2021-10-12 | New-Tec Integration (Xiamen) Co., Ltd. | Retractable ladder |
| CN110847800A (en) * | 2019-04-08 | 2020-02-28 | 崇华科技永康有限公司 | Extension ladder |
| CN110453967A (en) * | 2019-08-12 | 2019-11-15 | 常州朗卓机电科技有限公司 | Mast auto-unlocking device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071107 Termination date: 20141030 |
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