WO2002046640A2 - A supplementary leaf spring assembly - Google Patents

A supplementary leaf spring assembly Download PDF

Info

Publication number
WO2002046640A2
WO2002046640A2 PCT/IB2001/002333 IB0102333W WO0246640A2 WO 2002046640 A2 WO2002046640 A2 WO 2002046640A2 IB 0102333 W IB0102333 W IB 0102333W WO 0246640 A2 WO0246640 A2 WO 0246640A2
Authority
WO
WIPO (PCT)
Prior art keywords
leaf spring
spring
supplementary
free end
blade
Prior art date
Application number
PCT/IB2001/002333
Other languages
French (fr)
Other versions
WO2002046640A3 (en
Inventor
William Wilfred Spencer
Original Assignee
William Wilfred Spencer
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by William Wilfred Spencer filed Critical William Wilfred Spencer
Priority to AU2002220962A priority Critical patent/AU2002220962A1/en
Publication of WO2002046640A2 publication Critical patent/WO2002046640A2/en
Publication of WO2002046640A3 publication Critical patent/WO2002046640A3/en

Links

Classifications

    • 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
    • F16F1/00—Springs
    • F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
    • F16F1/18—Leaf springs
    • F16F1/22—Leaf springs with means for modifying the spring characteristic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
    • B60G11/32—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds
    • B60G11/34—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds including leaf springs
    • B60G11/36—Resilient suspensions characterised by arrangement, location or kind of springs having springs of different kinds including leaf springs and also helical, spiral or coil springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60G—VEHICLE SUSPENSION ARRANGEMENTS
    • B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
    • B60G2202/10—Type of spring
    • B60G2202/12—Wound spring
    • B60G2202/122—Wound spring subjected to tension
    • 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
    • F16F2230/00—Purpose; Design features
    • F16F2230/0047—Measuring, indicating

Definitions

  • THIS invention relates to an adjustable supplementary spring assembly for supplementing the compressive resistance of a leaf spring of the type comprising a stack of overlying contiguous spring blades.
  • South African patent no. 94/5738 discloses an adjustable coil spring assembly comprising an adjustable coil spring extending between a vehicle axle and a free end of the leaf spring.
  • the assembly includes adjustment means for adjusting the tension of the spring so as to vary the compressive resistance of the leaf spring.
  • This assembly was designed for light commercial vehicles having a load capacity of up to one ton. However, in the USA and Europe, for example, use is made of motor homes and campervans which have a load capacity of up to three tons. Due to the nature of the equipment being carried by these vehicles, such as furniture, stoves, and crockery, the stability of these vehicles is paramount.
  • an adjustable supplementary spring assembly for supplementing the compressive resistance of a leaf spring of the type comprising a stack of centrally mounted overlying contiguous spring blades having a first free end and a second free end, the spring assembly including:
  • a supplementary leaf spring blade having a fixed end mounted to the stack of spring blades and a free end;
  • adjustable mounting means for mounting the free end of the supplementary leaf spring blade to the first free end of the leaf spring in a spaced-apart relationship
  • the mounting means includes adjustment means for varying the distance between the supplementary leaf spring blade and the leaf spring so as to adjust the compressive resistance of the supplemented leaf spring.
  • the adjustable mounting means includes a clamping bracket against which the free end of the supplementary leaf spring blade is resiliently biased.
  • the leaf spring assembly includes mounting means for mounting the fixed end of the leaf spring blade to the leaf spring, the mounting means being arranged to sandwich the fixed end of the blade between the leaf spring and a clamping plate.
  • the supplementary spring assembly further includes a supplementary coil spring assembly which is preferably of the type disclosed in South African patent no. 94/5738.
  • a first end of the coil spring assembly is connected to the second free end of the leaf spring and a second end of the coil spring assembly is connected to the stack of spring blades.
  • the fixed end of the supplementary leaf spring blade includes a projecting flange, the flange being arranged to be connected to the second end of the coil spring assembly.
  • the flange terminates in a pair of eyelets, which define a slot therebetween, the slot and the pair of eyelets being arranged to rotatably house a roller to which the coil spring assembly is connected.
  • a leaf spring comprising:
  • adjustable mounting means for mounting the free end of the at least one spring blade to the remaining stack of spring blades in a spaced- apart relationship
  • the mounting means includes adjustment means for varying the distance between the at least one spring blade and the remaining stack of spring blades so as to adjust the compressive resistance of the leaf spring.
  • a supplementary leaf spring assembly for supplementing the compressive resistance of a leaf spring of the type comprising a stack of centrally mounted overlying contiguous spring blades having a first free end and a second free end, the free ends being connected to a vehicle's chassis, the spring assembly including: a supplementary leaf spring blade which is mounted to the first free end of the leaf spring in a spaced-apart relationship; and
  • a supplementary coil spring assembly which is mounted between the supplementary leaf spring blade and the second free end of the leaf spring, the supplementary coil spring assembly being adjustable so as to vary the compressive resistance of the supplemented leaf spring.
  • Figure 1 shows a perspective side view of a supplementary leaf spring blade according to a first embodiment of the invention
  • Figure 2 shows a side view of an adjustable supplementary spring assembly according to the invention, the assembly utilising the leaf spring blade shown in Figure 1 ;
  • Figure 3 shows a perspective view of adjustable mounting means for mounting a free end of the supplementary leaf spring blade of the assembly to a leaf spring of a vehicle;
  • Figure 4 shows a perspective side view of a supplementary leaf spring blade according to a second embodiment of the invention.
  • Figure 5 shows a rear view of the supplementary leaf spring blade shown in Figure 4.
  • an adjustable supplementary spring assembly 10 for supplementing the compressive resistance of a leaf spring 12 of a vehicle.
  • the leaf spring 12 comprises a stack of centrally mounted overlying contiguous spring blades having a first free end 14 and a second free end 16.
  • the free ends 14 and 16 terminate in a pair of corresponding first and second eyes which receive first and second pins respectively for pivotably connecting the leaf spring 12 to the chassis of a motor vehicle.
  • the spring assembly 10 includes a supplementary leaf spring blade 18 having a fixed end 20 and a free end 22.
  • Mounting means 24 for mounting the fixed end 20 of the spring blade 18 to the leaf spring 12 comprises a pair of U-bolts 26 which get placed around the vehicle's axle 28, on either side of the leaf spring 12.
  • the mounting means 24 includes a clamping plate 30 which gets secured to the pair of U bolts 26 by means of threaded nuts 32 and 34 so as to sandwich the fixed end 20 of the leaf spring blade 18 between the clamping plate 30 and the leaf spring 12. This mounting arrangement can be clearly seen in Figure 2.
  • the supplementary leaf spring blade 18 includes a first substantially flat portion 36 to which the clamping plate 30 can be securely fastened, and a second flattened portion 38 which gets secured to mounting means 40.
  • the mounting means 40 includes a U-bolt 42 which accommodates the first free end 14 of the uppermost blade of the leaf spring 12.
  • a clamping bracket 44 is securely mounted to the U-bolt 42 by means of nuts 46 and 48.
  • the clamping plate 44 is arranged to receive the flattened portion 38 of the leaf spring blade 18, with a sprung portion of the spring blade 18 ensuring that the free end 22 of the spring blade 18 is resiliently biased against the clamping plate 44.
  • the fixed end 20 of the leaf spring 18 terminates in a rectangular flange 50 projecting at right angles to the substantially flat portion 36, the flange 50 defining a dimpled recess 52.
  • the recess 52 is arranged to receive a free end of a first connector rod 54 which forms part of a supplementary coil spring 56 of the type disclosed in South African patent no. 94/5738.
  • the first connector rod 54 is connected to a tension coil spring 58 which is in turn anchored to a second connector rod 60, the second connector rod 60 in turn being threaded along its entire length and passing through a hole defined in a flange 61 of a bracket 62.
  • the rod 60 is secured in the hole by means of locking nuts 63 which are threaded onto the rod 60.
  • the bracket 62 includes a strip extending at right angles from the flange 61 and terminating in a hook 64 which engages an eye of the second free end 16.
  • the hook 64 is shown as an overslung hook, it is clear that an underslung hook may also be used to connect the bracket to the eye.
  • the type of hook used and the method in which it engages the eye of the second free end depend entirely on the type of vehicle to which the coil spring 56 is being mounted.
  • a second embodiment of a supplementary leaf spring blade 66 is substantially similar to the leaf spring blade 18 described above, save that a fixed end 68 of the leaf spring blade 66 terminates in an upwardly extending flange 70, the flange 70 terminating in a pair of eyelets 72 and 74, which define a slot 76 therebetween.
  • the slot 76 and pair of eyelets 72 and 74 are arranged to rotatably house a roller, to which the free end of the first connector rod 54 is connected which forms part of the supplementary coil spring 56 of the type disclosed in South African patent no. 94/5738.
  • the primary advantage of this particular connecting arrangement for connecting the supplementary coil spring 56 to the leaf spring blade 66 is that, by allowing the coil spring 56 to rotate relative to the leaf spring blade 66, it can accommodate a greater degree of flexing of the leaf spring 12.
  • Installation of the supplementary spring assembly 10 involves jacking up the vehicle to which the assembly 10 is to be installed, so that the leaf spring 12 is unloaded.
  • the fixed end 20 can then be readily bolted to the leaf spring 12 by means of the pair of U-bolts 26 and clamping plate 30.
  • the mounting means 40 is then fitted to the leaf spring 12 so that it is adjustably mounted to the free end of the leaf spring blade 18.
  • the distance between the supplementary leaf spring blade 18 and the leaf spring 12 can then be varied by adjusting the nuts 46 and 48, thereby adjusting the compressive resistance of the supplemented leaf spring.
  • the hook 64 is placed around the eye of the second free end 16, with the overall length of the assembly 56 being adjusted by means of the nuts 63 so that the first connector 54 may be connected to the flange 50. Thereafter the tension of the assembly 56 may be adjusted, to the required amount, by adjusting the nuts 63.
  • the primary advantage of the present invention is that the tension of the leaf spring can readily and easily be adjusted to suit the vehicle's load requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Springs (AREA)
  • Vehicle Body Suspensions (AREA)

Abstract

An adjustable supplementary spring assembly (10) is provided for supplementing the compressive resistance of a leaf spring (12) of a vehicle. The spring assembly (10) includes a supplementary leaf spring blade (18) having a fixed end, which is mounted to the leaf spring (12), and a free end. The assembly (10) further includes mounting means (40), which includes a U-bolt for accommodating a first free end (14) of the uppermost blade of the leaf spring (12). A clamping bracket is securely mounted to the U-bolt by means of nuts, with a sprung portion of the spring blade (18) ensuring that the free end of the spring blade (18) is resiliently biased against the clamping plate. By adjusting the nuts the distance between the clamping bracket, and thus the free end of the leaf spring blade (18), and the adjacent leaf spring (12) can be varied. This effectively allows the compressive resistance of the supplemented leaf spring to be readily adjusted according to the vehicle's load.

Description

A SUPPLEMENTARY LEAF SPRING ASSEMBLY
BACKGROUND OF THE INVENTION
THIS invention relates to an adjustable supplementary spring assembly for supplementing the compressive resistance of a leaf spring of the type comprising a stack of overlying contiguous spring blades.
South African patent no. 94/5738 discloses an adjustable coil spring assembly comprising an adjustable coil spring extending between a vehicle axle and a free end of the leaf spring. The assembly includes adjustment means for adjusting the tension of the spring so as to vary the compressive resistance of the leaf spring. This assembly was designed for light commercial vehicles having a load capacity of up to one ton. However, in the USA and Europe, for example, use is made of motor homes and campervans which have a load capacity of up to three tons. Due to the nature of the equipment being carried by these vehicles, such as furniture, stoves, and crockery, the stability of these vehicles is paramount.
There are at present various techniques employed to address this requirement, such as, for example, the use of airbags. Alternatively, the spring assembly disclosed in South African patent no. 94/5738 has been modified by providing strengthened springs having a larger diameter spring wire. Both of these arrangements, however, have their drawbacks, and it would therefore be desirable to provide a spring assembly that could conveniently and sufficiently supplement the leaf springs in these types vehicles. SUMMARY OF THE INVENTION
According to a first aspect of the invention there is provided an adjustable supplementary spring assembly for supplementing the compressive resistance of a leaf spring of the type comprising a stack of centrally mounted overlying contiguous spring blades having a first free end and a second free end, the spring assembly including:
a supplementary leaf spring blade having a fixed end mounted to the stack of spring blades and a free end; and
adjustable mounting means for mounting the free end of the supplementary leaf spring blade to the first free end of the leaf spring in a spaced-apart relationship,
wherein the mounting means includes adjustment means for varying the distance between the supplementary leaf spring blade and the leaf spring so as to adjust the compressive resistance of the supplemented leaf spring.
Advantageously, the adjustable mounting means includes a clamping bracket against which the free end of the supplementary leaf spring blade is resiliently biased.
Conveniently, the leaf spring assembly includes mounting means for mounting the fixed end of the leaf spring blade to the leaf spring, the mounting means being arranged to sandwich the fixed end of the blade between the leaf spring and a clamping plate.
In one version, the supplementary spring assembly further includes a supplementary coil spring assembly which is preferably of the type disclosed in South African patent no. 94/5738. Typically, a first end of the coil spring assembly is connected to the second free end of the leaf spring and a second end of the coil spring assembly is connected to the stack of spring blades. Preferably, the fixed end of the supplementary leaf spring blade includes a projecting flange, the flange being arranged to be connected to the second end of the coil spring assembly.
In one form of the invention, the flange terminates in a pair of eyelets, which define a slot therebetween, the slot and the pair of eyelets being arranged to rotatably house a roller to which the coil spring assembly is connected.
According to a second aspect of the invention there is provided a leaf spring comprising:
a stack of overlying spring blades, wherein at least one spring blade has a fixed end mounted to the remaining stack of spring blades and a free end; and
adjustable mounting means for mounting the free end of the at least one spring blade to the remaining stack of spring blades in a spaced- apart relationship,
wherein the mounting means includes adjustment means for varying the distance between the at least one spring blade and the remaining stack of spring blades so as to adjust the compressive resistance of the leaf spring.
According to a third aspect of the invention there is provided a supplementary leaf spring assembly for supplementing the compressive resistance of a leaf spring of the type comprising a stack of centrally mounted overlying contiguous spring blades having a first free end and a second free end, the free ends being connected to a vehicle's chassis, the spring assembly including: a supplementary leaf spring blade which is mounted to the first free end of the leaf spring in a spaced-apart relationship; and
a supplementary coil spring assembly which is mounted between the supplementary leaf spring blade and the second free end of the leaf spring, the supplementary coil spring assembly being adjustable so as to vary the compressive resistance of the supplemented leaf spring.
BRIEF DESCRIPTION OF THE DRAWINGS
Figure 1 shows a perspective side view of a supplementary leaf spring blade according to a first embodiment of the invention;
Figure 2 shows a side view of an adjustable supplementary spring assembly according to the invention, the assembly utilising the leaf spring blade shown in Figure 1 ;
Figure 3 shows a perspective view of adjustable mounting means for mounting a free end of the supplementary leaf spring blade of the assembly to a leaf spring of a vehicle;
Figure 4 shows a perspective side view of a supplementary leaf spring blade according to a second embodiment of the invention; and
Figure 5 shows a rear view of the supplementary leaf spring blade shown in Figure 4. DESCRIPTION OF EMBODIMENTS
Referring to Figures 1 and 2, an adjustable supplementary spring assembly 10 is shown for supplementing the compressive resistance of a leaf spring 12 of a vehicle. The leaf spring 12 comprises a stack of centrally mounted overlying contiguous spring blades having a first free end 14 and a second free end 16. The free ends 14 and 16 terminate in a pair of corresponding first and second eyes which receive first and second pins respectively for pivotably connecting the leaf spring 12 to the chassis of a motor vehicle.
The spring assembly 10 includes a supplementary leaf spring blade 18 having a fixed end 20 and a free end 22. Mounting means 24 for mounting the fixed end 20 of the spring blade 18 to the leaf spring 12 comprises a pair of U-bolts 26 which get placed around the vehicle's axle 28, on either side of the leaf spring 12. The mounting means 24 includes a clamping plate 30 which gets secured to the pair of U bolts 26 by means of threaded nuts 32 and 34 so as to sandwich the fixed end 20 of the leaf spring blade 18 between the clamping plate 30 and the leaf spring 12. This mounting arrangement can be clearly seen in Figure 2.
The supplementary leaf spring blade 18 includes a first substantially flat portion 36 to which the clamping plate 30 can be securely fastened, and a second flattened portion 38 which gets secured to mounting means 40. The mounting means 40, as is more clearly shown in Figure 3, includes a U-bolt 42 which accommodates the first free end 14 of the uppermost blade of the leaf spring 12. A clamping bracket 44 is securely mounted to the U-bolt 42 by means of nuts 46 and 48. The clamping plate 44 is arranged to receive the flattened portion 38 of the leaf spring blade 18, with a sprung portion of the spring blade 18 ensuring that the free end 22 of the spring blade 18 is resiliently biased against the clamping plate 44. By adjusting the nuts 46 and 48 the distance between the clamping bracket 44, and thus the free end 22 of the leaf spring blade 18, and the adjacent leaf spring 12 can be varied. This effectively allows the compressive resistance of the supplemented leaf spring to be readily adjusted according to the vehicle's load.
The fixed end 20 of the leaf spring 18 terminates in a rectangular flange 50 projecting at right angles to the substantially flat portion 36, the flange 50 defining a dimpled recess 52. The recess 52 is arranged to receive a free end of a first connector rod 54 which forms part of a supplementary coil spring 56 of the type disclosed in South African patent no. 94/5738. The first connector rod 54 is connected to a tension coil spring 58 which is in turn anchored to a second connector rod 60, the second connector rod 60 in turn being threaded along its entire length and passing through a hole defined in a flange 61 of a bracket 62. The rod 60 is secured in the hole by means of locking nuts 63 which are threaded onto the rod 60. The bracket 62 includes a strip extending at right angles from the flange 61 and terminating in a hook 64 which engages an eye of the second free end 16. Although the hook 64 is shown as an overslung hook, it is clear that an underslung hook may also be used to connect the bracket to the eye. The type of hook used and the method in which it engages the eye of the second free end depend entirely on the type of vehicle to which the coil spring 56 is being mounted.
Turning now to Figures 4 and 5, a second embodiment of a supplementary leaf spring blade 66 is substantially similar to the leaf spring blade 18 described above, save that a fixed end 68 of the leaf spring blade 66 terminates in an upwardly extending flange 70, the flange 70 terminating in a pair of eyelets 72 and 74, which define a slot 76 therebetween. The slot 76 and pair of eyelets 72 and 74 are arranged to rotatably house a roller, to which the free end of the first connector rod 54 is connected which forms part of the supplementary coil spring 56 of the type disclosed in South African patent no. 94/5738. The primary advantage of this particular connecting arrangement for connecting the supplementary coil spring 56 to the leaf spring blade 66 is that, by allowing the coil spring 56 to rotate relative to the leaf spring blade 66, it can accommodate a greater degree of flexing of the leaf spring 12.
Installation of the supplementary spring assembly 10 involves jacking up the vehicle to which the assembly 10 is to be installed, so that the leaf spring 12 is unloaded. The fixed end 20 can then be readily bolted to the leaf spring 12 by means of the pair of U-bolts 26 and clamping plate 30. The mounting means 40 is then fitted to the leaf spring 12 so that it is adjustably mounted to the free end of the leaf spring blade 18. The distance between the supplementary leaf spring blade 18 and the leaf spring 12 can then be varied by adjusting the nuts 46 and 48, thereby adjusting the compressive resistance of the supplemented leaf spring.
Thereafter the hook 64 is placed around the eye of the second free end 16, with the overall length of the assembly 56 being adjusted by means of the nuts 63 so that the first connector 54 may be connected to the flange 50. Thereafter the tension of the assembly 56 may be adjusted, to the required amount, by adjusting the nuts 63.
The primary advantage of the present invention is that the tension of the leaf spring can readily and easily be adjusted to suit the vehicle's load requirements.

Claims

1. An adjustable supplementary spring assembly for supplementing the compressive resistance of a leaf spring of the type comprising a stack of centrally mounted overlying contiguous spring blades having a first free end and a second free end, the spring assembly including:
a supplementary leaf spring blade having a fixed end mounted to the stack of spring blades and a free end; and
adjustable mounting means for mounting the free end of the supplementary leaf spring blade to the first free end of the leaf spring in a spaced-apart relationship,
wherein the mounting means includes adjustment means for varying the distance between the supplementary leaf spring blade and the leaf spring so as to adjust the compressive resistance of the supplemented leaf spring.
2. An adjustable supplementary spring assembly according to claim 1 wherein the adjustable mounting means includes a clamping bracket against which the free end of the supplementary leaf spring blade is resiliently biased.
3. An adjustable supplementary spring assembly according to either one of the preceding claims wherein the leaf spring assembly includes mounting means for mounting the fixed end of the leaf spring blade to the leaf spring, the mounting means being arranged to sandwich the fixed end of the blade between the leaf spring and a clamping plate.
4. An adjustable supplementary spring assembly according to any one of the preceding claims wherein the fixed end of the leaf spring blade is connected to a supplementary coil spring assembly which is mounted to the second free end of the leaf spring.
5. An adjustable supplementary spring assembly according to claim 4 wherein the fixed end of the supplementary leaf spring blade includes a projecting flange, the flange being arranged to be connected to the coil spring assembly.
6. An adjustable supplementary spring assembly according to claim 5 wherein the flange terminates in a pair of eyelets, which define a slot therebetween, the slot and the pair of eyelets being arranged to rotatably house a roller to which the coil spring assembly is connected.
7. A leaf spring comprising:
a stack of overlying spring blades, wherein at least one spring blade has a fixed end mounted to the remaining stack of spring blades and a free end; and
adjustable mounting means for mounting the free end of the at least one spring blade to the remaining stack of spring blades in a spaced-apart relationship,
wherein the mounting means includes adjustment means for varying the distance between the at least one spring blade and the remaining stack of spring blades so as to adjust the compressive resistance of the leaf spring. A supplementary leaf spring assembly for supplementing the compressive resistance of a leaf spring of the type comprising a stack of centrally mounted overlying contiguous spring blades having a first free end and a second free end, the free ends being connected to a vehicle's chassis, the spring assembly including:
a supplementary leaf spring blade which is mounted to the first free end of the leaf spring in a spaced-apart relationship; and
a supplementary coil spring assembly which is mounted between the supplementary leaf spring blade and the second free end of the leaf spring, the supplementary coil spring assembly being adjustable so as to vary the compressive resistance of the supplemented leaf spring.
PCT/IB2001/002333 2000-12-08 2001-12-07 A supplementary leaf spring assembly WO2002046640A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2002220962A AU2002220962A1 (en) 2000-12-08 2001-12-07 A supplementary leaf spring assembly

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA200007303 2000-12-08
ZA2000/7303 2000-12-08

Publications (2)

Publication Number Publication Date
WO2002046640A2 true WO2002046640A2 (en) 2002-06-13
WO2002046640A3 WO2002046640A3 (en) 2002-08-08

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ID=25589010

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2001/002333 WO2002046640A2 (en) 2000-12-08 2001-12-07 A supplementary leaf spring assembly

Country Status (2)

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AU (1) AU2002220962A1 (en)
WO (1) WO2002046640A2 (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007138448A1 (en) * 2006-05-29 2007-12-06 William Wilfred Spencer Connector assembly for a supplementary tension spring assembly
CN102179690A (en) * 2011-04-13 2011-09-14 东风汽车股份有限公司 Assembly tool equipment and assembly method for U-shaped bolt of automobile plate spring suspension system
CN103335049A (en) * 2013-06-25 2013-10-02 徐州荣海机械制造有限公司 Electric vehicle leaf spring
US20140027961A1 (en) * 2011-01-13 2014-01-30 Sax Suspension Technology Pty. Ltd. Leaf spring system
EP2243975A3 (en) * 2009-04-24 2014-03-12 Müller, Andreas Device for changing a leafspring characteristic
CN104875147A (en) * 2015-05-26 2015-09-02 重庆长安汽车股份有限公司 Tool for combining automotive rear axle and plate spring
CN110702431A (en) * 2019-11-19 2020-01-17 安徽江淮汽车集团股份有限公司 Composite air suspension detection device

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BE546834A (en) *
FR455688A (en) * 1913-03-19 1913-08-06 Charles Kossuth Wright Shock absorber for vehicles
US1747727A (en) * 1927-01-19 1930-02-18 Sterling Spring Company Spring attachment
US1854442A (en) * 1928-01-03 1932-04-19 John W Baird Shock absorber
US1759948A (en) * 1928-01-09 1930-05-27 George W Libby Device for controlling the action of vehicle springs
US3062526A (en) * 1959-08-24 1962-11-06 John A Roehrig Vehicle leaf spring suspension

Non-Patent Citations (1)

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Title
None

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007138448A1 (en) * 2006-05-29 2007-12-06 William Wilfred Spencer Connector assembly for a supplementary tension spring assembly
EP2243975A3 (en) * 2009-04-24 2014-03-12 Müller, Andreas Device for changing a leafspring characteristic
US20140027961A1 (en) * 2011-01-13 2014-01-30 Sax Suspension Technology Pty. Ltd. Leaf spring system
US10414229B2 (en) * 2011-01-13 2019-09-17 Sax Suspension Technology Pty Ltd. Leaf spring system
CN102179690A (en) * 2011-04-13 2011-09-14 东风汽车股份有限公司 Assembly tool equipment and assembly method for U-shaped bolt of automobile plate spring suspension system
CN103335049A (en) * 2013-06-25 2013-10-02 徐州荣海机械制造有限公司 Electric vehicle leaf spring
CN104875147A (en) * 2015-05-26 2015-09-02 重庆长安汽车股份有限公司 Tool for combining automotive rear axle and plate spring
CN104875147B (en) * 2015-05-26 2016-08-17 重庆长安汽车股份有限公司 Automobile axle and leaf spring attach together frock
CN110702431A (en) * 2019-11-19 2020-01-17 安徽江淮汽车集团股份有限公司 Composite air suspension detection device

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Publication number Publication date
WO2002046640A3 (en) 2002-08-08
AU2002220962A1 (en) 2002-06-18

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