SE537362C2 - Air spring, piston and vehicle - Google Patents
Air spring, piston and vehicle Download PDFInfo
- Publication number
- SE537362C2 SE537362C2 SE1051252A SE1051252A SE537362C2 SE 537362 C2 SE537362 C2 SE 537362C2 SE 1051252 A SE1051252 A SE 1051252A SE 1051252 A SE1051252 A SE 1051252A SE 537362 C2 SE537362 C2 SE 537362C2
- Authority
- SE
- Sweden
- Prior art keywords
- piston
- air spring
- vehicle
- air
- compressed air
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/30—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs having pressure fluid accumulator therefor, e.g. accumulator arranged in vehicle frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/26—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs
- B60G11/27—Resilient suspensions characterised by arrangement, location or kind of springs having fluid springs only, e.g. hydropneumatic springs wherein the fluid is a gas
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/08—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for fluid
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/02—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum
- F16F9/04—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall
- F16F9/05—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type
- F16F9/057—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using gas only or vacuum in a chamber with a flexible wall the flexible wall being of the rolling diaphragm type characterised by the piston
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/40—Constructional features of dampers and/or springs
- B60G2206/42—Springs
- B60G2206/424—Plunger or top retainer construction for bellows or rolling lobe type air springs
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
SAMMANDRAG Luftfjader (10) for ett fordon (50), innefattande en rullbalg (12) med ett par gavlar (16, 32) och avgransande en luftfjaderkammare (20), varvid en av gavlarna (36) är bildad pa en kolv (30) med en omkretsyta (34) fOr understod av en rullande lob (14) hos balgen nar gavlarna ror sig mot och frail varandra. Enligt uppfinningen ar kolven (30) ufformad som ett fran luftfjaderkammaren (20) skilt tryckkarl for ett tryckluftsystem (70) i fordonet (50). SUMMARY Air spring (10) for a vehicle (50), comprising a bellows (12) with a pair of ends (16, 32) and defining an air spring chamber (20), one of the ends (36) being formed on a piston (30) with a circumferential surface (34) for supported by a rolling lobe (14) of the bellows as the ends move against and frail each other. According to the invention, the piston (30) is formed as a pressure vessel separate from the air spring chamber (20) for a compressed air system (70) in the vehicle (50).
Description
Luftfjader, kolv och fordon TEKNIKOMRADE Uppfinningen avser en luftfjader for ett fordon, innefattande en rullbalg med ett par gavlar och avgransande en luftfjaderkammare, varvid en av gavlarna är bildad pa en kolv med en omkretsyta for understod av en rullande lob hos balgen nar gavlarna rOr sig mot och fran varandra. Uppfinningen avser aven en kolv fOr en sadan luftfjader samt ett fordon forsett med atminstone en sadan luftfjader. TECHNICAL FIELD The invention relates to an air spring for a vehicle, comprising a bellows with a pair of ends and defining an air spring chamber, one of the ends being formed on a piston with a circumferential surface for supporting a rolling lobe of the bellows when the ends move. towards and from each other. The invention also relates to a piston for such an air spring and a vehicle provided with at least one such air spring.
BAKGRUND Sadana luftfjadrar anvands vanligen i hjulupphdngningar has lastfordon, sasom last- bilar och slapfordon. FOrutom att tillhandahalla god fjadringsfunktion under fard med fordonet, har sadana luftfjadrar aven funktionen att pa fOrdelaktigt sat latt kunna omstallas for varierande fordonslaster eller olika korsituationer genom pafyllning eller avtappning av tryckluft via ett tryckluftsystem i fordonet. Gavlarna tjanar till att fOrbin- da luftfjaderns motsatta andar med de komponenter som ska avfjadras och atminstone en av gavlarna kan aven ha en in- och utloppsoppning for namnda pafyllning eller avtappning av tryckluft. Kolven behover ha relativt stor diameter och axiell langd fOr att kunna korrekt understOdja balgens rullande lob Over luftfjaderns hela slaglangd. BACKGROUND Such air springs are commonly used in wheel suspensions for trucks, such as trucks and trailers. In addition to providing good suspension function while driving the vehicle, such air springs also have the function of being advantageously easily adaptable for varying vehicle loads or different cross situations by filling or draining compressed air via a compressed air system in the vehicle. The ends end serve to connect the opposite spirits of the air spring with the components to be suspended and at least one of the ends may also have an inlet and outlet opening for said filling or draining of compressed air. The piston needs to have a relatively large diameter and axial length in order to be able to correctly support the bellows' rolling lobe over the entire stroke of the air spring.
REDOGORELSE FOR UPPFINNINGEN Ett andamal med uppfinningen är att utoka funktionerna has en luftfjader av inledningsvis angivet slag, utan att vasentligen andra dess konstruktion. SUMMARY OF THE INVENTION An object of the invention is to extend the functions of an air spring of the type indicated at the outset, without substantially altering its construction.
Detta uppnas genom de sardrag som anges i efterfOljande patentkrav. This is achieved by the features set forth in the appended claims.
Enligt en betraktelse av uppfinningen är kolven utformad som ett fran luftfjaderkam- maren skilt tryckkarl fOr ett tryckluftsystem i fordonet. Darigenom kan det redan be- 1 fintliga utrymmet i kolven, som annars är overksamt eller gemensamt med luftfjaderkammaren, pa ett enkelt och utrymmesbesparande salt delvis ersatta de separata tryckkarl som ingar i tryckluftsystemet och darmed frigOra utrymme och minska vikt hos ford onet. Om man raknar med att en typisk kolv kan rymma ca 5 liter luft, inses att mellan tva och sex luftfjadrar i ett lastfordon kan tillhandahdlla en volym for kom- primerad luft motsvarande ett separat tryckkarl pa mellan 10 och 30 liter. Den som tryckkarl tjanstgOrande kolven kan aven tjana som en lokal tryckkalla for den tillhorande luftfjddern och/eller aven for angransande luftfjddrar, sâ att tryckluften kan fordelas Over korta ledningsvagar med sma ledningsfOrluster och snabba svarstider. According to a consideration of the invention, the piston is designed as a pressure vessel separate from the air spring chamber for a compressed air system in the vehicle. As a result, the already existing space in the piston, which is otherwise ineffective or in common with the air spring chamber, on a simple and space-saving salt can partially replace the separate pressure vessels which enter the compressed air system and thereby free up space and reduce the weight of the vehicle. If one assumes that a typical piston can hold about 5 liters of air, it will be appreciated that between two and six air springs in a truck can provide a volume of compressed air corresponding to a separate pressure vessel of between 10 and 30 liters. The piston serving as a pressure vessel can also serve as a local pressure source for the associated air spring and / or also for adjacent air springs, so that the compressed air can be distributed over short line carriages with small line losses and fast response times.
Kolven har en in- och utloppsoppning fOr upptagning och avgivning av tryckluft fran resp. till tryckluftsystemet. In- och utloppsoppningen kan vara anordnad i den pa kolven bildade gaveln av luftfjadern. Luftfjadern kommer alltsd dã att ha tva tryckluftsanslutningar, en for luftfjdderkammaren och en for den som tryckkarl utformade kolven. The piston has an inlet and outlet opening for receiving and discharging compressed air from resp. to the compressed air system. The inlet and outlet opening can be arranged in the end of the air spring formed on the piston. The air spring will then have two compressed air connections, one for the air spring chamber and one for the piston designed as a pressure vessel.
Kolven kan vara bildad av ett par sammanfogade delar. Kolven kan dâ vara framstand av ett par pressade skalformiga delar, som kan vara sammanfogade genom ett svetsfOrband. Delarna kan aven vara sammanfogade genom ett flansforband. The piston may be formed by a pair of joined parts. The piston can then be the production of a pair of pressed shell-shaped parts, which can be joined together by a welded joint. The parts can also be joined together by a flange joint.
FlansfOrbandet kan aven forbinda en ande av rullbalgen med kolven. The flange joint can also connect a spirit of the bellows to the piston.
Andra sardrag och fordelar med uppfinningen kan framga av patentkraven och foljande beskrivning av utforingsexempel. Other features and advantages of the invention may be apparent from the claims and the following description of exemplary embodiments.
KORTFATTAD RITNINGSBESKRIVNING FIG. 1 dr en sidovy med bortbrutna delar av en hjulaxelupphdngning hos ett fordon med en luftfjdder enligt uppfinningen; FIG. 2 är en vy snett ovanifran i langdsnitt av en luftfjdder enligt uppfinningen; 2 FIG. 3 är en vy snett ovanifran i langdsnitt av en kolv fOr en luftfjdder enligt uppfinningen; FIG. 4 är en snittvy med bortbrutna delar visande ett undre andparti av en annan kolv for en luftfjdder enligt uppfinningen; och FIG. 5 är en snittvy med bortbrutna delar visande ett Ovre andparti av ytterligare en kolv for en luftfjdder enligt uppfinningen. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a side view with broken away parts of a wheel axle suspension of a vehicle with an air spring according to the invention; FIG. 2 is a view obliquely from above in longitudinal section of an air spring according to the invention; FIG. 3 is a view obliquely from above in longitudinal section of a piston for an air spring according to the invention; FIG. 4 is a sectional view with broken away parts showing a lower end portion of another piston for an air spring according to the invention; and FIG. 5 is a sectional view with broken away parts showing an upper end portion of a further piston for an air spring according to the invention.
DETALJERAD BESKRIVNING AV UTFORINGSEXEMPEL I FIG. 1 visas ett exempel pa anvandning av en luftfjdder 10 enligt uppfinningen sdsom fjdderelement vid en sida av ett chassi 52 for ett endast delvis visat fordon 50, 15 dal- en rambalk 54 hos chassiet 52 uppbar en bakre hjulupphangning 60. DETAILED DESCRIPTION OF EMBODIMENTS IN FIG. 1 shows an example of the use of an air spring 10 according to the invention as a spring element at one side of a chassis 52 for a vehicle 50 only partially shown, a frame beam 54 of the chassis 52 carrying a rear wheel suspension 60.
Hjulupphdngningen 60 har ett bladfjdderpaket 64, vars ena ande ãr svangbart f6rbunden med rambalken 54 via ett balkfaste 56 och vars andra ande är forbunden med rambalken 54 via luftfjadern 10. MeIlan fjaderpaketets 64 andar ãr forankrad en hjulaxelbalk 62, vid vilken pa ej visat satt är lagrad en axel for ett ej heller visat bak- hjul. Som vidare antyds i FIG. 1 kan hjulupphdngningen 60 aven innefatta en stotddmpare 66. The wheel suspension 60 has a leaf spring package 64, one end of which is pivotally connected to the frame beam 54 via a beam bracket 56 and the other end of which is connected to the frame beam 54 via the air spring 10. Between the springs of the spring package 64 is anchored a wheel axle beam 62, at which is shown mounted one axle for a rear wheel not shown either. As further indicated in FIG. 1, the wheel suspension 60 may also include a shock absorber 66.
I det visade exemplet kan fordonet 50 vara tvaaxligt. Den bakre hjulupphdngningen 60 kan da ha tva luftfjddrar 10, dvs. en i narheten av varje bakhjul. Vid andra ej visa- de typer av axelarrangemang med flera hjulupphdngningar, kan fordonet ha flera, exempelvis fyra eller sex, sadana luftfjddrar 10. In the example shown, the vehicle 50 may be biaxial. The rear wheel suspension 60 can then have two air springs 10, i.e. one near each rear wheel. In other types of axle arrangements with several wheel suspensions (not shown), the vehicle may have several, for example four or six, such air springs 10.
I FIG. 2 visas mer i detalj en luftfjdder 10 enligt uppfinningen. Luftfjadern 10 har pa kant sail en ungefdr rOrformig rullbalg 12, som tillsammans med en byre gavel 16 och en kolv 30 avgransar en luftfjdderkammare 20. Narmare bestamt är balgens 12 Ovre ande tatande fOrbunden med ett randomrade 18 av gaveln 16 och dess undre ande ãr tatande f6rbunden med ett randomrade 38 vid en Ovre ande eller gavel 32 av kolven 30. Dessa tdtande dndforbindningar kan vara utformade pa andra kanda salt an 3 vad som visas i FIG. 2; exempelvis kan kolvens 30 innergavel 32 vara fOrbunden med en platta 32' (FIG. 3) som klammer fast en fortjockad inre ande 12' av balgen mot kolven 30 vid randomradet 38. In FIG. 2 shows in more detail an air spring 10 according to the invention. The air spring 10 has on the edge of the sail an approximately tubular rolling bellows 12, which together with a byre end 16 and a piston 30 defines an air spring chamber 20. More specifically, the upper end of the bellows 12 is connected to a random row 18 of the end 16 and its lower end is off connected to a random row 38 at an upper end or end 32 of the piston 30. These sealing end connections may be formed on other known salt than 3 shown in FIG. 2; for example, the inner end 32 of the piston 30 may be connected to a plate 32 '(FIG. 3) which clamps a thickened inner spirit 12' of the bellows against the piston 30 at the random row 38.
Som vidare framgar av FIG. 1 tillsammans med FIG. 2, kan luftfjdderns 10 ovre gavel 16 vara fOrbunden med rambalken 54 via en hdllare 58 och ett antal gangade fast-element 46, och dess undre gavel 36, dvs. kolvens 30 botten, kan vara forbunden med fjaderpaketet 64 via ett centralt skruvforband 44. As further shown in FIG. 1 together with FIG. 2, the upper end 16 of the air spring 10 may be connected to the frame beam 54 via a holder 58 and a number of threaded fixed elements 46, and its lower end 36, i.e. the bottom of the piston 30, may be connected to the spring package 64 via a central screw connection 44.
Luftfjadern 10 uppfyller pa kant sail sin fjadrande funktion genom att nar luften i luft- fjaderkammaren 20 omvaxlande komprimeras och expanderas under fordonets fjadringsrorelser, ror sig en rullande lob 14 hos balgen 12 tram och ater, styrd langs en omkretsyta 34 av kolven 30. Luftfjaderns 10 fjaderkammare 20 har pa likasd kant sail en in- och utloppsoppning 22 som via en anslutningsnippel 72 och en ledning 74 är forbunden med ett schematiskt framstallt, centralt tryckluftsystem 70 hos fordonet 50. The air spring 10 fulfills its resilient function on the edge of the sail by alternately compressing and expanding the air in the air spring chamber 20 during the vehicle's suspension movements, a rolling lobe 14 of the bellows 12 moves tram and back, guided along a circumferential surface 34 of the piston 30. The air spring 10 spring chamber 20 has on the same edge sail an inlet and outlet opening 22 which is connected via a connection nipple 72 and a line 74 to a schematically represented, central compressed air system 70 of the vehicle 50.
I det visade exemplet styrs tryckluftsystemet 70 av en fordonsdator 80, men kan aven styras mekaniskt, fOr fOrdelning av tryckluft till olika fOrbrukare, sasom en eller flera ytterligare luftfjddrar 10 i fordonet 50. In the example shown, the compressed air system 70 is controlled by a vehicle computer 80, but can also be controlled mechanically, for distributing compressed air to different consumers, such as one or more additional air springs 10 in the vehicle 50.
Luftfjaderns 10 kolv 30 är utformad som ett fran luftfjdderkammaren 20 skilt tryckkarl for tryckluftsystemet 70 i fordonet. Aven kolven 30 har da en in- och utloppsoppning 40 som likasâ via en anslutningsnippel 76 och en ledning 78 är fOrbunden med det centrala tryckluftsystemet 70. Genom ej visade andra ledningar, pumpar, ventiler etc. i tryckluftsystemet 70 kan kolven 30 trycksattas for att lagra tryckluft och vid behov utmata tryckluft till Onskade olika fOrbrukare, sdsom luftfjdderkammaren 20, i syste- met 60. The piston 30 of the air spring 10 is designed as a pressure vessel separate from the air spring chamber 20 for the compressed air system 70 in the vehicle. The piston 30 then also has an inlet and outlet opening 40 which is also via a connection nipple 76 and a line 78 is connected to the central compressed air system 70. Through other lines, pumps, valves etc. not shown in the compressed air system 70, the piston 30 can be pressurized to store compressed air and, if necessary, supply compressed air to the desired different Consumers, such as the air spring chamber 20, in the system 60.
Som framgar av FIG. 3, kan kolven 30 vara framstalld av ett par skalformiga delar 30a, 30b av t.ex. djupdragen eller rullformad/trycksvarvad stalplat, vilka dr samman- fogade genom en runtgdende svets 30c. In- och utloppsoppningen 40 kan vara utformad som en pressad krage i kolvens 30 botten 36, och en central pressad fordjupning 42 i bottnen 36 kan ha en innerganga fOr det i FIG. 1 antydda centrala skruvfOrbandet 44. 4 Som antyds i FIG. 4 kan kolvens 30 bada delar al/en vara sammanfogade genom ett fldnsforband 30d med en tatning, sasom en 0-ring 30d'. Den undre delen 30b kan dá vara utformad som ett lock som bildar kolvens 30 botten eller undre gavel 36. As can be seen from FIG. 3, the piston 30 may be made of a pair of shell-shaped parts 30a, 30b of e.g. deep-drawn or roll-shaped / pressure-turned steel plate, which are joined together by a circumferential weld 30c. The inlet and outlet opening 40 may be formed as a pressed collar in the bottom 36 of the piston 30, and a central pressed recess 42 in the bottom 36 may have an inner passage for it in FIG. 1, the central screw connection 44. 4 As indicated in FIG. 4, both parts a1 / a of the piston 30 may be joined together by a flange joint 30d with a seal, such as an O-ring 30d '. The lower part 30b can then be designed as a lid which forms the bottom or lower end 36 of the piston 30.
I FIG. 5 är i stallet kolvens 30 ovre del 30a utformad som ett lock som bildar kolvens topp eller Ovre gavel 32. Som framgar av FIG. 5, kan delarna 30a och 30b vara f6renade genom ett rullat fldnsforband 30e som aven tatande fasthdller rullbalgens 12 fortjockade inre ande 12' vid kolven 30. In FIG. 5, in the stable, the upper part 30a of the piston 30 is formed as a lid which forms the top of the piston or the upper end 32. As can be seen from FIG. 5, the portions 30a and 30b may be joined by a rolled flap joint 30e which also tightly holds the thickened inner end 12 'of the bellows 12 to the piston 30.
Ovan detaljerade beskrivning är i forsta hand avsedd att underldtta forstdelsen och nagra onodiga begransningar av uppfinningen ska inte uttolkas ddrifran. De modifikationer som blir uppenbara fOr en fackman vid genomgang av beskrivningen kan genomforas utan avvikelse fran uppfinningstanken eller omfanget av efterfOljande pate ntkrav. The above detailed description is primarily intended to facilitate understanding and any unnecessary limitations of the invention should not be construed as such. The modifications which become apparent to one skilled in the art upon review of the specification may be practiced without departing from the spirit of the invention or the scope of the appended claims.
Claims (7)
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1051252A SE537362C2 (en) | 2010-11-29 | 2010-11-29 | Air spring, piston and vehicle |
| EP11845399.2A EP2646707A1 (en) | 2010-11-29 | 2011-11-23 | Air spring, piston and vehicle |
| PCT/SE2011/051410 WO2012074458A1 (en) | 2010-11-29 | 2011-11-23 | Air spring, piston and vehicle |
| BR112013012574A BR112013012574A2 (en) | 2010-11-29 | 2011-11-23 | air spring, piston and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1051252A SE537362C2 (en) | 2010-11-29 | 2010-11-29 | Air spring, piston and vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE1051252A1 SE1051252A1 (en) | 2012-05-30 |
| SE537362C2 true SE537362C2 (en) | 2015-04-14 |
Family
ID=46172157
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE1051252A SE537362C2 (en) | 2010-11-29 | 2010-11-29 | Air spring, piston and vehicle |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2646707A1 (en) |
| BR (1) | BR112013012574A2 (en) |
| SE (1) | SE537362C2 (en) |
| WO (1) | WO2012074458A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900800A (en) * | 2012-10-15 | 2013-01-30 | 西南交通大学 | Hydraulic shock absorber with butterfly-shaped annular springs |
| DE102016207873B4 (en) * | 2016-05-09 | 2024-02-01 | Ford Global Technologies, Llc | Air suspension unit for a motor vehicle |
| JP6941046B2 (en) * | 2017-12-20 | 2021-09-29 | 株式会社荏原製作所 | Polishing head and polishing equipment |
| US11335588B2 (en) * | 2019-06-18 | 2022-05-17 | Ebara Corporation | Substrate holding apparatus and substrate processing apparatus |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1057469B (en) * | 1956-09-19 | 1959-05-14 | Daimler Benz Ag | Air suspension, especially for heavy-duty vehicles or the like. |
| DE1505423A1 (en) * | 1964-07-14 | 1969-06-19 | Forss Brdr Ab | Vehicle axle for wheels with brakes, which are operated by servo motors driven by compressed air |
| IT1178992B (en) * | 1984-06-27 | 1987-09-16 | Fiat Auto Spa | VARIABLE STRENGTH PNEUMATIC SPRING PARTICULARLY FOR VEHICLE SUSPENSIONS |
| SE513416C2 (en) * | 1997-12-18 | 2000-09-11 | Volvo Lastvagnar Ab | Procedure for raising and lowering a vehicle chassis |
| US6386524B1 (en) * | 2000-02-15 | 2002-05-14 | Bfs Diversified Products, Llc | Pedestal mounted full reservoir air spring piston |
| DE202009001029U1 (en) * | 2008-11-21 | 2009-11-26 | Humbaur Gmbh | Trailer with compressed air tank |
-
2010
- 2010-11-29 SE SE1051252A patent/SE537362C2/en unknown
-
2011
- 2011-11-23 WO PCT/SE2011/051410 patent/WO2012074458A1/en active Application Filing
- 2011-11-23 BR BR112013012574A patent/BR112013012574A2/en not_active IP Right Cessation
- 2011-11-23 EP EP11845399.2A patent/EP2646707A1/en not_active Withdrawn
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012074458A1 (en) | 2012-06-07 |
| BR112013012574A2 (en) | 2018-05-08 |
| EP2646707A1 (en) | 2013-10-09 |
| SE1051252A1 (en) | 2012-05-30 |
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