CA2290150A1 - Highly rigid elevator car floor - Google Patents
Highly rigid elevator car floor Download PDFInfo
- Publication number
- CA2290150A1 CA2290150A1 CA002290150A CA2290150A CA2290150A1 CA 2290150 A1 CA2290150 A1 CA 2290150A1 CA 002290150 A CA002290150 A CA 002290150A CA 2290150 A CA2290150 A CA 2290150A CA 2290150 A1 CA2290150 A1 CA 2290150A1
- Authority
- CA
- Canada
- Prior art keywords
- slats
- car floor
- elevator car
- cover plate
- baseplate
- 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.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
Landscapes
- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Laminated Bodies (AREA)
- Types And Forms Of Lifts (AREA)
- Body Structure For Vehicles (AREA)
Abstract
A car floor for passenger or freight elevators with composite or sandwich construction contains in its core a lattice-like structure (3) of longitudinal (4) and lateral (5) slats which cross over each other, and which is irremovably joined to the baseplate (2) and the cover plate (1). A car floor of this type is resistant to bending and twisting and has a high resonant frequency. If the car floor is made of steel, the elements of the composite structure are joined together by means of plug welding.
Description
Highly Rigid Elevator Car Floor Description The present invention. relates to elevator car floors having a composite construction, also known as sandwich construction, such as are used in cars for passenger or freight elevatcrs. Such cars are usually built into so-called car frames, which in turn are guided on rails fastened in elevator hoistways and moved up and down by ropes driven by drive machines.
Normally, an elevator car floor has the function of carrying the weight of the car superstructure with walls, car roof, car doors, and various attachments, as well as the entire maximum rated load, and transmitting it, usually via suitable vibration isolation elements, to the car frame. It is important that it does this without any part of the floor deforming, by which is meant bending or twisting, beyond certain limits even under eccentric loading. It is equally important that it cannot be excited to inadmissibly strong sympathetic bending vibrations by interference vi:~ratio:ns such as are mainly transmitted to the car from th~= driv~= via the suspension ropes. This is most reliably a~~hieved by the floor having high resistance to bending in a:ll directions, and as a result of this, the highest possible= resonant frequency of bending. A further requirement for such a car floor is that its surface, which usually takes the form of a steel sheet, does not suffer permanent deformation under heavy loads concentrated onto small areas (e.c~. caused by transportation equipment with relatively smal:L whee:Ls). Furthermore, such a car floor should have lowE~st possible mass and minimal vertical dimensions. Moreover, regulations of certain European countries specii:y that: elevator cars may only contain absolutely minimal quantities of materials which are not classified as "non-flammable".
Normally, an elevator car floor has the function of carrying the weight of the car superstructure with walls, car roof, car doors, and various attachments, as well as the entire maximum rated load, and transmitting it, usually via suitable vibration isolation elements, to the car frame. It is important that it does this without any part of the floor deforming, by which is meant bending or twisting, beyond certain limits even under eccentric loading. It is equally important that it cannot be excited to inadmissibly strong sympathetic bending vibrations by interference vi:~ratio:ns such as are mainly transmitted to the car from th~= driv~= via the suspension ropes. This is most reliably a~~hieved by the floor having high resistance to bending in a:ll directions, and as a result of this, the highest possible= resonant frequency of bending. A further requirement for such a car floor is that its surface, which usually takes the form of a steel sheet, does not suffer permanent deformation under heavy loads concentrated onto small areas (e.c~. caused by transportation equipment with relatively smal:L whee:Ls). Furthermore, such a car floor should have lowE~st possible mass and minimal vertical dimensions. Moreover, regulations of certain European countries specii:y that: elevator cars may only contain absolutely minimal quantities of materials which are not classified as "non-flammable".
Two basic principles of construction are known, one being referred to as ;sectional frame construction and the other as composite construction. There are also sectional frame constructions having plates or boards of steel or fiberboard in o=~ on them. However, the requirements mentioned are only partially fulfilled by the known embodiments.
EP 0 566 424 B1 describes an embodiment of an elevator car floor which has the objective of achieving the required characteristics by using the principle of composite (or sandwich) construction. This consists in essence of a core of wood, cardboard, or thermoplastic foam bonded between an upper cover plate constructed as a bonding layer and a similar lower baseplate. To attain adequate resilience of the cover plate, which forms the surface of the car floor, against loads concentrated on small areas, supporting webs are inserted between strips of the core material. So that parts of the car' which adjoin this floor, as for example car walls or door sills, can be fastened to it, the plate with the compound structure as described is surrounded by a steel frame.
Such a construction cannot fulfil the fire protection regulations mentioned for certain countries. Furthermore, under continuous loading, creepage can occur in the core material and bonding, causing permanent deformation of the floor with serious consequences for the correct functioning of components integrat~=_d in the car, such as doors, flaps, or wall cladding elements. An additional disadvantage of such bonded composite structures is that the manufacturer must have available an infrastructure for faultless bonding technology, incl~~ding :suitable and sufficiently large presses, in addition to equipment for processing metal.
EP 0 566 424 B1 describes an embodiment of an elevator car floor which has the objective of achieving the required characteristics by using the principle of composite (or sandwich) construction. This consists in essence of a core of wood, cardboard, or thermoplastic foam bonded between an upper cover plate constructed as a bonding layer and a similar lower baseplate. To attain adequate resilience of the cover plate, which forms the surface of the car floor, against loads concentrated on small areas, supporting webs are inserted between strips of the core material. So that parts of the car' which adjoin this floor, as for example car walls or door sills, can be fastened to it, the plate with the compound structure as described is surrounded by a steel frame.
Such a construction cannot fulfil the fire protection regulations mentioned for certain countries. Furthermore, under continuous loading, creepage can occur in the core material and bonding, causing permanent deformation of the floor with serious consequences for the correct functioning of components integrat~=_d in the car, such as doors, flaps, or wall cladding elements. An additional disadvantage of such bonded composite structures is that the manufacturer must have available an infrastructure for faultless bonding technology, incl~~ding :suitable and sufficiently large presses, in addition to equipment for processing metal.
The subject of t=he present invention is an elevator car construction according to Claim 1, based on the composite or sandwich method of construction, which fulfils in an ideal manner al:L the requirements for an elevator car floor stated above.
In essence, the construction consists of a baseplate and a cover plate, each of them resistant to both tensile and compressive stresses, with a Young's modulus as high as possible and, l~~ing between these, a core with a composite structure which differs from embodiments known so far, which are made from wood, foam, etc., in that it consists of a type of lattice. This is constructed from a large number of slats placeo. vertically edgeways and crossing each other at right angles, a number of the slats running parallel to the longitudinal edge of the floor, and a number running F~arallel to its transverse edge, the distances between the slats all being equal, and the slats being fastened at the points at which they cross over to the baseplate and the cover plate. The length and width of 2o this lattice core correspond to the dimensions of the car floor. For a given material specification, and given limits in relation to overall height and weight, a car floor manufactured according to this principle, and optimized with the aid of FEM calculations, possesses optimal rigidity in all directions combined with a highest possible resonant bending frequency. The cover plate's being supported by the entire perimeter of the square fields of the lattice also imparts to the cover plate the important property of being able to support heavy loads concentrated on small areas without permanent deformation.
By making the baseplatt_, the cover plate, and the slats of the lattice of steel sheet, the requirement for a strong material with hi~3h Young's modulus and minimal tendency to creepage is fulfilled, and the construction also complies with all relevant fire protection requirements. An additional important advantage is that in this way the complete floor can be manufactured with conventional metalworking technology.
The necessaryy fastening of the components of the compound structure to each ether takes place in a suitable manner so that, at the points where they cross over, the slats of the lattice are welded by means of "plug welding" to the cover plate and ba:~eplatce (hereinafter referred to as the cover plate and ba:~eplate~ respectively) . This welding is performed from the outside of the two plates through pre-punched holes whose: position corresponds to the crossover points of the' slats of the lattice.
Using the method described above, the cri~ical requirement for a sandwich plate resistant to bending, that there be rigid transmission of thrust forces between the baseplate and the cover plate: with minimal weight, is fulfilled in an ideal way. Permaner,.t bending or twisting as a result of creepage occurring in the core material, or in bonded joints, under heavy static loads cannot occur.
It is made possible for the slats of the lattice running at right angles to each other to cross over each other at several places by the slats having stamped at all crossover points slots at right angles to their longitudinal axis, whose width corresponds to the thickness of the slat material, and which extend about half way across the height of the slats, extending from above in the slats running in the longitudinal direction and from below in the slats running in the lateral direction. This makes it possible for the later<~1 slats to be inserted into the longitudinal slats at all t=he crossover points in such a way that all the slats lie on the same level and form the lattice described abo~re .
The side walls of tree car floor are formed by bending the corresponding7.y pre-cut cover plate, which simplifies the manufacturing proce:~s.
A further advant=age oi= the construction according to the invention is that the above-mentioned side walls of the car floor are rigid:Ly fast:ened by welding to the ends of the 5 slats of the lat=tice c=ore, thereby giving them high load-bearing strength and rigidity for fastening components such as door sills, door frames, and car walls to them.
To enable immersion painting of the complete floor construction, the slat=s of the lattice core are provided with punched ope=nings at each crossover point so that the paint liquid can penet=rate into all the hollow spaces of the lattice core' and also drain out again. For this purpose, when the floor is immersion painted it has to be hung up by one c=orner in such a way that it submerges into the bath with it=s diagonal approximately vertical.
A more detailed description of the invention based on a preferred exemplary embodiment follows below by reference to the drawings 1 to 4.
Fig. 1 shows a completely constructed embodiment of a car floor with the characteristics according to the invention;
Fig. 2 shows the principle of the lattice core;
Fig. 3 shows the welded joints between the baseplate and and cover plate and the lattice core;
Fig. 4 shows the openings in the lattice core for the paint liquid which is used during immersion painting to flow in and out.
Fig. 1 shows a preferred embodiment of the elevator car floor according to the invention. The floor is made entirely from bent and welded steel sheet. It consists in essence of the cover plate 1 with bent support for door sill 6, the basE=_plate 2, and the lattice core 3, which consists of lonc~itudimal and lateral slats 4, 5 crossing over each other, and which lies between the cover plate and 5 baseplate. Also visible are components which fulfil functions specii=is to elevators, such as the side wall sections 7, stij_fener:~ 8 for the door sill support, and supporting sect:_ons 1.. with threads for fastening the isolating elements (not visible) which serve as connectors between the car floor and car frame. In that area of Fig. 1 which shows the basepl.ate 2 partly cut away, the method of construction of the lattice core 3 can be seen. This is illustrated in more detail in Fig. 2, which shows how the lateral slats 5 are ir,.serted in the longitudinal slats 4 using the punched slots 12. FEM calculations are used to optimize the strength of the slats of the lattice core, as well as their distances from each other, depending on the load on the floor, the thickness of the cover plate, and the overall height of the construction.
In the baseplate 2, punched, slot-shaped holes 9 are visible, each of whose position corresponds with a crossover point of the slats of the lattice core. There are also corresponding holes in the cover plate. Through these holes 9 plug welding is performed to fasten the cover plate 1 and the baseplate 2 rigidly to the lattice core 3, as shown in Fig. 3. In principle, penetration welding processes (e.g. laser or electron-beam welding) can also be used, for which no holes are required, but when they are used it is less easy t~~ observe the welding process. In Fig. 1 it can also be .seen that the ends of the slats 4, 5 of the lattice core extend to the side walls (e.g. at 10) and to the stiffeners c~f the door sill support 6, where they are welded 'to the;ae and impart to them enormous stiffness, which is of great importance for their function as supporters of walls and door sills.
At each crossover point. the slats 4, 5 have openings 11 at their mid-height which ensure that during immersion painting the paint liquid can penetrate into, and subsequently drain out of, all the hollow spaces of the car floor when it is hung up by one corner.
In essence, the construction consists of a baseplate and a cover plate, each of them resistant to both tensile and compressive stresses, with a Young's modulus as high as possible and, l~~ing between these, a core with a composite structure which differs from embodiments known so far, which are made from wood, foam, etc., in that it consists of a type of lattice. This is constructed from a large number of slats placeo. vertically edgeways and crossing each other at right angles, a number of the slats running parallel to the longitudinal edge of the floor, and a number running F~arallel to its transverse edge, the distances between the slats all being equal, and the slats being fastened at the points at which they cross over to the baseplate and the cover plate. The length and width of 2o this lattice core correspond to the dimensions of the car floor. For a given material specification, and given limits in relation to overall height and weight, a car floor manufactured according to this principle, and optimized with the aid of FEM calculations, possesses optimal rigidity in all directions combined with a highest possible resonant bending frequency. The cover plate's being supported by the entire perimeter of the square fields of the lattice also imparts to the cover plate the important property of being able to support heavy loads concentrated on small areas without permanent deformation.
By making the baseplatt_, the cover plate, and the slats of the lattice of steel sheet, the requirement for a strong material with hi~3h Young's modulus and minimal tendency to creepage is fulfilled, and the construction also complies with all relevant fire protection requirements. An additional important advantage is that in this way the complete floor can be manufactured with conventional metalworking technology.
The necessaryy fastening of the components of the compound structure to each ether takes place in a suitable manner so that, at the points where they cross over, the slats of the lattice are welded by means of "plug welding" to the cover plate and ba:~eplatce (hereinafter referred to as the cover plate and ba:~eplate~ respectively) . This welding is performed from the outside of the two plates through pre-punched holes whose: position corresponds to the crossover points of the' slats of the lattice.
Using the method described above, the cri~ical requirement for a sandwich plate resistant to bending, that there be rigid transmission of thrust forces between the baseplate and the cover plate: with minimal weight, is fulfilled in an ideal way. Permaner,.t bending or twisting as a result of creepage occurring in the core material, or in bonded joints, under heavy static loads cannot occur.
It is made possible for the slats of the lattice running at right angles to each other to cross over each other at several places by the slats having stamped at all crossover points slots at right angles to their longitudinal axis, whose width corresponds to the thickness of the slat material, and which extend about half way across the height of the slats, extending from above in the slats running in the longitudinal direction and from below in the slats running in the lateral direction. This makes it possible for the later<~1 slats to be inserted into the longitudinal slats at all t=he crossover points in such a way that all the slats lie on the same level and form the lattice described abo~re .
The side walls of tree car floor are formed by bending the corresponding7.y pre-cut cover plate, which simplifies the manufacturing proce:~s.
A further advant=age oi= the construction according to the invention is that the above-mentioned side walls of the car floor are rigid:Ly fast:ened by welding to the ends of the 5 slats of the lat=tice c=ore, thereby giving them high load-bearing strength and rigidity for fastening components such as door sills, door frames, and car walls to them.
To enable immersion painting of the complete floor construction, the slat=s of the lattice core are provided with punched ope=nings at each crossover point so that the paint liquid can penet=rate into all the hollow spaces of the lattice core' and also drain out again. For this purpose, when the floor is immersion painted it has to be hung up by one c=orner in such a way that it submerges into the bath with it=s diagonal approximately vertical.
A more detailed description of the invention based on a preferred exemplary embodiment follows below by reference to the drawings 1 to 4.
Fig. 1 shows a completely constructed embodiment of a car floor with the characteristics according to the invention;
Fig. 2 shows the principle of the lattice core;
Fig. 3 shows the welded joints between the baseplate and and cover plate and the lattice core;
Fig. 4 shows the openings in the lattice core for the paint liquid which is used during immersion painting to flow in and out.
Fig. 1 shows a preferred embodiment of the elevator car floor according to the invention. The floor is made entirely from bent and welded steel sheet. It consists in essence of the cover plate 1 with bent support for door sill 6, the basE=_plate 2, and the lattice core 3, which consists of lonc~itudimal and lateral slats 4, 5 crossing over each other, and which lies between the cover plate and 5 baseplate. Also visible are components which fulfil functions specii=is to elevators, such as the side wall sections 7, stij_fener:~ 8 for the door sill support, and supporting sect:_ons 1.. with threads for fastening the isolating elements (not visible) which serve as connectors between the car floor and car frame. In that area of Fig. 1 which shows the basepl.ate 2 partly cut away, the method of construction of the lattice core 3 can be seen. This is illustrated in more detail in Fig. 2, which shows how the lateral slats 5 are ir,.serted in the longitudinal slats 4 using the punched slots 12. FEM calculations are used to optimize the strength of the slats of the lattice core, as well as their distances from each other, depending on the load on the floor, the thickness of the cover plate, and the overall height of the construction.
In the baseplate 2, punched, slot-shaped holes 9 are visible, each of whose position corresponds with a crossover point of the slats of the lattice core. There are also corresponding holes in the cover plate. Through these holes 9 plug welding is performed to fasten the cover plate 1 and the baseplate 2 rigidly to the lattice core 3, as shown in Fig. 3. In principle, penetration welding processes (e.g. laser or electron-beam welding) can also be used, for which no holes are required, but when they are used it is less easy t~~ observe the welding process. In Fig. 1 it can also be .seen that the ends of the slats 4, 5 of the lattice core extend to the side walls (e.g. at 10) and to the stiffeners c~f the door sill support 6, where they are welded 'to the;ae and impart to them enormous stiffness, which is of great importance for their function as supporters of walls and door sills.
At each crossover point. the slats 4, 5 have openings 11 at their mid-height which ensure that during immersion painting the paint liquid can penetrate into, and subsequently drain out of, all the hollow spaces of the car floor when it is hung up by one corner.
Claims (10)
1. Elevator car floor resistant to bending with composite or sandwich construction consisting essentially of a baseplate , a cover plate , and lying between these a core with a composite structure, characterized in that the core which forms the connection between the baseplate and. the cover plate consists of a number of slats placed vertically edgeways and crossing over each other in the form of a lattice and being irremovably joined in a suitable manner to the baseplate and cover plate.
2. Elevator car floor according to Claim 1 characterized in that the baseplate , the cover plate , and the slats of the lattice core are of steel sheet.
3. Elevator car floor according to Claims 1 and 2 characterized in that the slats of the lattice core are irremovably joined to the baseplate and cover plate at the crossover points of the lattice by means of so-called "plug welding", this plug welding being performed from the outside of the car floor through suitably shaped holes in the baseplate and cover plate positioned over the crossover points.
4. Elevator car floor according to Claims 1 through 3 characterized in that crossover of the slats lying on the same level is possible due to these slats having stamped at all crossover points slots at right angles to their longitudinal axis, whose width corresponds to the thickness of the slat material, and which extend about half way across the height of the slats, from above in the slats running in one direction, and from below in the slats running at right angles to those.
5. Elevator car floor according to Claims 1 and 2 characterized in that the side walls of the car floor, which serve as a base for attachment of further car components, are formed by bending the cover plate.
6. Elevator car floor according to Claims 1 through 5 characterized in that the ends of the slats of the lattice core are joined to the side walls of the car floor thereby giving it high load-bearing strength and rigidity for attaching other car components.
7. Elevator car floor according to Claims 1 through 3 characterized in that the holes needed for the plug-welded joints between the lattice core and these plates take the form of slots and that they are made before assembly by punching on NC
punching machines.
punching machines.
8. Elevator car floor according to Claims 1 and 2 characterized in that the slats of the lattice core are provided with punched openings in the area of the crossover so that during immersion painting the paint liquid can penetrate into, and subsequently drain out of, all the hollow spaces of the car floor when it is hung up by one corner.
9. Elevator car floor according to Claims 1, 2 and 4 characterized in that the lateral slots in the slats are manufactured in such a way that all the lateral slots are first punched in a metal sheet, this being followed by separation into the
10 individual slats, thereby avoiding the slats being distorted by the lateral slots being punched.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP98811156.3 | 1998-11-24 | ||
| EP98811156 | 1998-11-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2290150A1 true CA2290150A1 (en) | 2000-05-24 |
Family
ID=8236448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002290150A Abandoned CA2290150A1 (en) | 1998-11-24 | 1999-11-22 | Highly rigid elevator car floor |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP1004538B1 (en) |
| JP (1) | JP2000219461A (en) |
| CN (1) | CN1101777C (en) |
| AT (1) | ATE259758T1 (en) |
| CA (1) | CA2290150A1 (en) |
| DE (1) | DE59908575D1 (en) |
| HK (1) | HK1029566A1 (en) |
| MY (1) | MY121825A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906697A (en) * | 2011-08-25 | 2014-07-02 | 因温特奥股份公司 | Base for an elevator car |
| CN113187114A (en) * | 2021-04-06 | 2021-07-30 | 华南理工大学 | Light composite heat-insulation sound-insulation board and preparation method thereof |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2001279837A1 (en) * | 2000-07-14 | 2002-01-30 | Kone Corporation | Supporting framework for an elevator car |
| BRPI0515112A (en) * | 2004-09-09 | 2008-07-01 | Inventio Ag | elevator cabin and process for installing an elevator cabin |
| CA2579307C (en) * | 2004-09-09 | 2014-02-11 | Inventio Ag | Lift cage and method for the installation of a lift |
| DE102005041619A1 (en) * | 2005-09-01 | 2007-03-08 | Wittur Ag | Lift arrangement for e.g. lift shaft in e.g. residential building, has lift cage, which absorbs vertical and horizontal forces arising at cage, where walls of cage exhibit constant thickness |
| DE102007007049B3 (en) * | 2007-02-08 | 2008-09-18 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Sheet metal component for use as body part in e.g. automobile, has cover plate connected with base plate, where connection element is used to increase deformation resistance of component depending on deformation of cover plate |
| WO2012084518A1 (en) | 2010-12-22 | 2012-06-28 | Inventio Ag | Elevator car floor comprising a filling compound |
| BR112013020826B1 (en) * | 2011-04-06 | 2021-02-09 | Inventio Ag | elevator with an elevator car including a floor and a damping element to receive the elevator car |
| CN102602779A (en) * | 2011-12-09 | 2012-07-25 | 江南嘉捷电梯股份有限公司 | Plate for wind deflector of elevator car |
| CN104176597B (en) * | 2014-07-24 | 2017-04-26 | 上海致用电梯有限公司 | Car floor adopting ultrathin granite material |
| CN110497072A (en) * | 2019-09-27 | 2019-11-26 | 福州大学 | Metal-rubber based on vacuum electron beam welding damps battenboard preparation process |
| CN112092117B (en) * | 2020-08-28 | 2022-05-13 | 广西大学 | Preparation method of crossed grid oriented light plate |
| KR20230111204A (en) | 2020-11-30 | 2023-07-25 | 인벤티오 아게 | Floor for lift car and installation method of lift car |
| CN116802138A (en) | 2020-12-23 | 2023-09-22 | 因温特奥股份公司 | Elevator car of elevator apparatus and method for installing elevator apparatus |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1907967A (en) * | 1929-12-20 | 1933-05-09 | Westinghouse Electric & Mfg Co | Elevator car |
| US4249640A (en) * | 1979-05-02 | 1981-02-10 | Westinghouse Electric Corp. | Corner post platform assembly |
| JPH02119484U (en) * | 1988-11-02 | 1990-09-26 | ||
| JP2723328B2 (en) * | 1990-02-28 | 1998-03-09 | 株式会社東芝 | Elevator car |
| FR2723362B1 (en) * | 1994-08-03 | 1996-09-27 | Otis Elevator Co | ELEVATOR CAB PLATFORM WITH MULTIPLE INTEGRATED FUNCTIONS. |
-
1999
- 1999-11-15 MY MYPI99004963A patent/MY121825A/en unknown
- 1999-11-17 JP JP11326811A patent/JP2000219461A/en active Pending
- 1999-11-22 CA CA002290150A patent/CA2290150A1/en not_active Abandoned
- 1999-11-24 CN CN99125041A patent/CN1101777C/en not_active Expired - Lifetime
- 1999-11-24 AT AT99123386T patent/ATE259758T1/en not_active IP Right Cessation
- 1999-11-24 EP EP99123386A patent/EP1004538B1/en not_active Expired - Lifetime
- 1999-11-24 DE DE59908575T patent/DE59908575D1/en not_active Expired - Lifetime
-
2000
- 2000-11-24 HK HK00107536A patent/HK1029566A1/en not_active IP Right Cessation
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103906697A (en) * | 2011-08-25 | 2014-07-02 | 因温特奥股份公司 | Base for an elevator car |
| US9809423B2 (en) | 2011-08-25 | 2017-11-07 | Inventio Ag | Base for an elevator car |
| CN113187114A (en) * | 2021-04-06 | 2021-07-30 | 华南理工大学 | Light composite heat-insulation sound-insulation board and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1254676A (en) | 2000-05-31 |
| CN1101777C (en) | 2003-02-19 |
| JP2000219461A (en) | 2000-08-08 |
| DE59908575D1 (en) | 2004-03-25 |
| ATE259758T1 (en) | 2004-03-15 |
| HK1029566A1 (en) | 2001-04-06 |
| EP1004538B1 (en) | 2004-02-18 |
| EP1004538A1 (en) | 2000-05-31 |
| MY121825A (en) | 2006-02-28 |
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| Date | Code | Title | Description |
|---|---|---|---|
| FZDE | Discontinued |