CN1535362A - Coil and air suspension system - Google Patents
Coil and air suspension system Download PDFInfo
- Publication number
- CN1535362A CN1535362A CNA02807484XA CN02807484A CN1535362A CN 1535362 A CN1535362 A CN 1535362A CN A02807484X A CNA02807484X A CN A02807484XA CN 02807484 A CN02807484 A CN 02807484A CN 1535362 A CN1535362 A CN 1535362A
- Authority
- CN
- China
- Prior art keywords
- piston
- inner tubular
- tubular element
- mechanical bias
- bias device
- 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.)
- Pending
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 34
- 238000007789 sealing Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 229920001971 elastomer Polymers 0.000 claims description 5
- 239000000806 elastomer Substances 0.000 claims description 5
- 230000036316 preload Effects 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 2
- 230000035939 shock Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 8
- 230000001105 regulatory effect Effects 0.000 description 6
- 230000003139 buffering effect Effects 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 239000000872 buffer Substances 0.000 description 4
- 239000007853 buffer solution Substances 0.000 description 4
- 210000004907 gland Anatomy 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000013016 damping Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 210000002683 foot Anatomy 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 238000009527 percussion Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K25/00—Axle suspensions
- B62K25/04—Axle suspensions for mounting axles resiliently on cycle frame or fork
- B62K25/06—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms
- B62K25/08—Axle suspensions for mounting axles resiliently on cycle frame or fork with telescopic fork, e.g. including auxiliary rocking arms for front wheel
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
The present invention includes a suspension apparatus with telescoping tubular elements, and a mechanical spring in parallel with an air spring chamber, positioned in one of the tubular elements, providing a mechanism for adjustment of the air spring pressure, the weight of the apparatus, and resistance of the apparatus to compressive shocks.
Description
Technical field
The present invention relates to the vehicle suspension system field; Especially, the present invention relates to the suspension system field of bicycle.
Background technique
Suspension system has been used for various uses, for example cushions the suffered impact of vehicle and machine, vibration or other disturbance.In Bicycles and Motorcycles, the common purposes of suspension system is suffered impact or the vibration of buffering cyclist when this bicycle or motorcycle cross jolting on the travel, rut, rock, hole or other obstacle.Suspension system can be along any appropriate arrangements of components of effect bicycle or frame of motorcycle, that help suspension system.Usually, suspension system is two slidably forms of pipe member, provides spring element or system simultaneously in this pipe member.When suspension system is in zero load (promptly not having external loading) state following time, spring system is pipe member to separate state.Various types of spring systems can adopt, and comprise helical spring, elastomeric components, pneumatic spring and hydraulic system.Pipe member is arranged to can slide relative to one another when percussion is on vehicle frame, and spring system is wherein resisted this pressure simultaneously.
Include the bicycle increased popularity of suspension system.A kind of bicycle suspension system of common form is to hang crotch, this suspension crotch has a pair of upper tubular crotch element, this can slide with respect to a pair of base plate tubulose crotch element to upper tubular crotch element, and these two pairs of crotch elements are all on the front-wheel of bicycle.Because the crotch element preferably can telescopically slide each other, two elements can be thought inner crotch element, and two elements are then thought outside crotch element in addition, and inner crotch element slides in this outside crotch element.Usually, the pair of pipes linear element on top is inner crotch element, and a pair of of bottom is outside crotch element.But, also can adopt opposite layout.
In order further to strengthen the performance of suspension system, provide buffer system, so that the motion of buffering suspension system.Such buffer system can be formed in the pipe member of suspension system, as described in the U.S. Patent No. 4561669 of the U.S. Patent No. 5445401 of Bradbury and Simons.Be more preferably, this buffer system can be arranged in independently in the dsah-pot.Described in the U.S. Patent No. 5456480 of Turner etc., this dsah-pot has a plurality of advantages.For example, dsah-pot has reduced gross weight (because needing less buffer fluid or gas) usually, makes dsah-pot have interchangeability and replaceable, and has reduced the amount of contingent leakage usually.Buffer system can be used in combination with measuring body shock-absorbing spring.In some system, the primary component of buffer structure can be in hanging a leg of crotch, and the primary component of spring structure can be in another leg that hangs crotch.
Suspension degree when being subjected to external loading or slidably the length that " moves " of leg depend on Several Factors, comprise characteristic, the bicycle/motorcycle speed of the buffering of passage that bicycle or motorcycle cross or landform, use and spring assembly, cyclist's weight and other factors.Knownly give stable condition in some using process and/or at some, the buffering of crotch and spring performance are suitable for certain landform or the condition of riding, but are not suitable for other landform or condition.Therefore, the controllability of the buffering of bicycle or motorcycle suspension crotch and/or spring performance is for the suitable important role of suspension system.
Summary of the invention
The application relates to a kind of adjustable suspension system, wherein, pneumatic spring is worked in identical locking system concurrently with mechanical spring, so that the opposing compression shock, and by increasing or reduce the air pressure of pneumatic spring, the spring rigidity of system can be regulated in successive range.
The objective of the invention is to satisfy the needs to controlling device, this controlling device can be adjusted to suspension system suitable cyclist's weight and other external loading on this suspension system at an easy rate.Another purpose of the present invention is to satisfy such needs, promptly reduces the weight of crotch, also is used in renitent helical spring or other mechanical spring simultaneously and keeps reliable, efficient and other advantage.In one embodiment of the invention, also a purpose has provided the advantage of pneumatic spring, but also provide the low-pressure air spring system, this low-pressure air spring system is not easy to lose efficacy, even and when losing efficacy, this low-pressure air spring system also can be replaced by the stand-by machine spring system of concurrent working.
These and other objects of the present invention by provide a kind of be used for wheel vehicle for example the suspension system of bicycle or motorcycle realize.In a preferred embodiment, suspension system has two extending foots, and a leg is provided with the primary component of buffer structure, and another leg is provided with the primary component of spring structure.Provide the leg of spring structure to comprise inner tubular element and outer tube element.Inner tubular element inserts in the outer tube element, and can stretch mode slide in this outer tube element.Inner tubular element and outer tube element are separated by the mechanical spring bias voltage, and this mechanical spring preferably is arranged in the helical spring on inner tubular element top.The spring of other type and spring assembly also can use, and comprise elastomeric spring and many helical springs and elastomer.Of the present invention preferred aspect, helical spring provides the resistance that stops piston longitudinal movement in inner tubular element.Preferably, an end of spring is against the top of inner tubular element, and the other end places on the upper surface of piston.Can adopt gland or a plurality of spring rod or other similar device so that make spring alignment, and with this spring-loaded in inner tubular element, and make the top of this spring abuts against plunger and inner tubular element.Piston is equipped with piston rod on its bottom surface, this piston rod passes the bottom of inner tubular element and extends, and leaves this inner tubular element.This piston rod is installed on the exterior tube element in its bottom.Piston has seal arrangement, and the inner wall surface of sealing device and inner tubular element forms gas tight seal.Inner tubular element forms gas tight seal in its top closure.The top of piston, inner tubular element and the inner tubular element madial wall between piston and inner tubular element top partly forms the chamber as pneumatic spring.
The pneumatic spring chamber can pass through to introduce additive air and supercharging, is higher than atmospheric pressure thereby the interior air pressure of chamber is elevated to.Preferably, the pressure in the chamber is kept above atmospheric pressure, but is lower pressure, and like this, the seal arrangement of piston and the wall of inner tubular element and top can not meet with stresses, and can not crack and leak.Preferably, top at inner tubular element is provided with control valve unit, like this, air can be introduced into the chamber neutralization according to cyclist's hobby and discharge from this chamber, so that weight or other external loading that acts on bicycle or the motorcycle according to the cyclist strengthen or the discharging air spring, perhaps according to landform or other condition of riding strengthens or the discharging air spring.In gland embodiment, the top of inner tubular element is by the top cap closure, and this top cap links to each other with the top of inner tubular element releasedly with airtightly.The top cap comprises control valve unit, for example the Shrader valve.The top cap is sized to make it to dismantle, so that can make spring return and change, so that adapt to the hobby of cyclist to helical spring rigidity.
Helical spring and pneumatic spring are included in the inner tubular element, and also are arranged in the sealed chamber that the madial wall by the top of piston, inner tubular element and inner tubular element forms.Helical spring and pneumatic spring are positioned at inner tubular element, and like this, their responses act on pressure on the piston and parallel working.Helical spring and pneumatic spring can also be arranged in the cartridge module.This cartridge module is packed in the inner tubular element.When outer tube element and piston upwards drove according to pressure, piston upwards slided in inner tubular element, thereby produced the upward force against helical spring and pneumatic spring.The motion of piston in inner tubular element reduced the volume of chamber, thereby increased the internal air pressure of chamber.In a preferred embodiment, because pneumatic spring remains low pressure (being higher than barometric pressure a little), when crotch was subjected to less jolting on road or track, the resistance of pneumatic spring was quite little.Jolt for less, helical spring provides main response in the present embodiment.For than pitchpole, when greatly reducing chamber when moving upward by the top that makes the piston towards inner tubular element, pneumatic spring becomes prior factor, compares during with less jolting, and this pneumatic spring is born the relatively large part of drag overall.
Pneumatic spring and helical spring parallel use make it possible to use lighter helical spring, and this has reduced to hang the gross weight of crotch.In addition, in a preferred embodiment, because by air being introduced chamber or being discharged from chamber, the pressure of pneumatic spring can be regulated by the control valve unit in inner tubular element, therefore, the pressure of pneumatic spring can be adjusted according to helical spring weight.Helical spring size and weight can be regulated according to cyclist's weight and hobby and the condition of riding.Helical spring can take out (for example by opening the top cap and pulling out helical spring) from the top of inner tubular element, and replaces with the helical spring with different spring rates.Also have, helical spring springs preload can be regulated with any way known in the art, comprises by the structure that is included in the cap of top carrying out the outside adjusting.In addition, the pressure size in pneumatic spring can be regulated according to cyclist's weight, the condition of riding etc.The adjusting of the pressure of pneumatic spring can be carried out at an easy rate by pump for inflating tire, thereby can carry out meticulous adjusting to the suspension and the damping behavior of crotch.In one embodiment of the invention, use the low-pressure air spring to make the seal arrangement of piston and stress that other seal connector in the inner tubular element upper end is subjected to littler.Use the attendant advantages of the pneumatic spring that walks abreast with helical spring to be, when pneumatic spring lost efficacy and lost pressure, helical spring provided standby vibration-damping function, and like this, crotch can total failure.
Although the present invention just is introduced by a leg of front portion suspension crotch, the present invention can be used for two legs, rear suspension system, the anterior single-column vibration damper of anterior crotch or the suspension system of using in other position of vehicle.In addition, although pneumatic spring preferably uses air, also can use other gas, for example nitrogen, and system can be the system that comprises fully and seal, and this system can not introduce or discharging air or gas by control valve unit.
Description of drawings
Fig. 1 has represented the embodiment of suspension system of the present invention.
Fig. 2 has represented that the embodiment of the invention on the other hand.
Embodiment
Introduce the present invention below with reference to the embodiment of the invention shown in Fig. 1.In Fig. 1, suspension system hangs crotch 10 by the front portion and constitutes, and this front portion hangs crotch 10 and has first leg 12 that comprises the host buffer structure and second leg 14 that comprises the main spring structure.Leg 14 comprises piston 20 and piston rod 22, and this piston 20 has seal arrangement 24.Piston 20 is positioned at inner tubular element 30.Piston 20 longitudinal movement in inner tubular element 30, seal arrangement 24 make between the madial wall 32 of the side of piston 20 and inner tubular element 30 and form gas tight seal, but piston 20 can be slided along the madial wall 32 of inner tubular element 30.Seal arrangement 24 is O shape ring or other like, is used for forming gas tight seal between the madial wall 32 of the side of piston 20 and inner tubular element 30.Inner tubular element 30 has top 34 and bottom 36.Piston rod 22 stretches out from the bottom 36 that inner tubular element 30 passes it, and links to each other with outer tube element 60.As shown in Figure 1, gland structure 38 is arranged in the bottom 36 of inner tubular element 30, and is used to seal the bottom 36 of inner tubular element 30.Gland structure 38 is used to prevent that dust and other pollutant from entering the bottom 36 of inner tubular element 30.
Piston 20 comprises upper surface 26 and bottom surface 28.Helical spring 40 is arranged in the inner tubular element 30.Helical spring 40 has bottom 42, and this bottom 42 places on the upper surface 26 of piston 20.Helical spring 40 also has top 44, and this top 44 is against the top 34 of inner tubular element 30.Top 34 seals by gas-tight seal.In the preferred embodiment shown in Fig. 1, top 34 is by 46 sealings of top cap, the top 34 of these top cap 46 close encapsulation inner tubular elements 30.The bottom surface of the upper surface 26 of piston 20, madial wall 32 and top cap 46 forms pneumatic spring chamber 50, and this pneumatic spring chamber 50 is by supercharging air, so that form pneumatic spring.As shown in Figure 1, top cap 46 has control valve unit 48, and for example the Shrader valve is used for air is introduced pneumatic spring chamber 50, and from chamber 50 discharging air.Control valve unit 48 also can be positioned at other position, for example on the inwall of inner tubular element 30.Control valve unit 48 is as controlling mechanism, can increase or reduce air pressure in the pneumatic spring chamber 50 by it, so that adapt to the variation of the cyclist's weight or the condition of riding.In addition, when hope is lighter with weight or spring rate is lower helical spring replaces the helical spring of a certain weight, can increase the air pressure in the pneumatic spring chamber 50.For example, by increasing the air pressure in the pneumatic spring chamber 50, softer helical spring can be used for heavier cyclist.In another aspect of this invention, rigidity of helical spring can be regulated by the springs preload device.This springs preload device can be included in the top cap 46, perhaps is included in the inner tubular element by other method known in the art.
In the present invention, the pneumatic spring of helical spring 40 and pneumatic spring chamber 50 responds the suffered pressure of crotch concurrently.In pneumatic spring chamber 50, also can adopt the gas that is different from air, for example nitrogen.(comprise such structure, promptly this structure comprises the combination of two or more helical springs or two or more elastomers or helical spring, elastomer and/or separator assembly also can to use the mechanical spring (for example elastomer) of other type and spring structure.And chamber 50 and helical spring 40 can be included in the tubular construction.
As shown in Figure 2, another aspect of the present invention comprises spring rod 70, and this spring rod 70 is positioned on the upper surface 26 of piston 20.Spring rod 70 is used for aliging and support spring 40 with spring 40.As shown in Figure 2, the present invention also comprises another spring rod 72, and this spring rod 72 is installed in the bottom of top cap 46.This spring rod also is used for aliging and support spring 40 with spring 40.Spring rod the 70, the 72nd, individual component, they link to each other with top cap 46 with piston 20 releasedly, and perhaps in optional embodiment, they form the element of piston 20 and top cap 46.As shown in Figure 2, spring rod 70 loosely links to each other with piston 20 by the countersink that places piston 20 upper surfaces 26.
Should be known in that helical spring and pneumatic spring also can walk abreast by other structure is arranged in the sealing system of vibration insulating system.The spirit and scope of accessory claim are not limited to preferred form described here.
Claims (9)
1. suspension arrangement comprises:
Inner tubular element, this inner tubular element has sidewall, top and bottom;
Outer tube element, this outer tube element has sidewall, open top end and closed bottom end, and the bottom telescopically of described inner tubular element inserts in the top of described outer tube element;
Piston, this piston engages slidably with the inside surface of side wall of described inner tubular element, described piston has upper surface and bottom surface, and has a seal arrangement, the sealing device is formed on the Sealing between the described internal surface of sidewall of described piston and described inner tubular element, so that stop air by the sealing device;
Piston rod, this piston rod have first end and second end, and this first end is installed on the described bottom surface of described piston, and this second end is installed on the bottom of described outer tube element;
The cap body, this cap body links to each other with the top of described inner tubular element, so that form air seals;
Pneumatic spring chamber in described inner tubular element, this pneumatic spring chamber determines that by the described upper surface and the described cap body of sidewall, described piston the air in described pneumatic spring chamber is used to stop the motion on the compression stroke of described piston at described piston simultaneously;
The mechanical bias device, this mechanical bias device has top and bottom, this bottom is arranged to the upper surface near described piston, this top is arranged near described cap body, described mechanical bias device can compress by the motion of the described cap body of described piston towards, and this mechanical bias device is arranged to stop the motion of described piston; And
Control valve unit, this control valve unit is positioned on the described inner tubular element, and can between open position and closed position, operate, this open position is used for that air is introduced described pneumatic spring chamber and from described pneumatic spring chamber discharging air, this closed position is used for air is remained in the described pneumatic spring chamber.
2. device according to claim 1 is characterized in that: described control valve unit is the Shrader valve that is positioned at described top cap.
3. device according to claim 1 is characterized in that: described mechanical bias device is a helical spring.
4. device according to claim 1 is characterized in that: described mechanical bias device is an elastomeric spring.
5. device according to claim 3 also comprises: first spring rod, and this first spring rod is positioned on the upper surface of described piston, and is arranged to and a described helical spring end in contact; And second spring rod, this second spring rod is installed on the cap of described top, and is arranged to contact with the described helical spring the other end.
6. device according to claim 1 also comprises: the springs preload device, this springs preload device links to each other with described top cap, is used to regulate the spring rate of described mechanical bias device.
7. method that is used to regulate the opposing vibration force performance of suspension arrangement comprises:
Suspension system is set, and this suspension system has:
Inner tubular element, this inner tubular element has sidewall, top and bottom;
Outer tube element, this outer tube element has sidewall, open top end and closed bottom end, and the bottom telescopically of described inner tubular element inserts in the top of described outer tube element;
Piston, the inside surface of side wall slip joint of this piston and described inner tubular element, described piston has upper surface and bottom surface, and seal arrangement arranged, the sealing device is formed on the Sealing between the described internal surface of sidewall of described piston and described inner tubular element, so that stop air by the sealing device;
Piston rod, this piston rod have first end and second end, and this first end is installed on the described bottom surface of described piston, and this second end is installed on the bottom of described outer tube element;
The cap body, this cap body links to each other with the top of described inner tubular element, so that form air seals;
Pneumatic spring chamber in described inner tubular element, this pneumatic spring chamber is determined by the described upper surface and the described cap body of sidewall, described piston, in described pneumatic spring chamber, provide simultaneously the air of pre-selected amount, be used to stop the motion of described piston on the compression stroke of described piston, and first resistance is provided;
The mechanical bias device, this mechanical bias device has top and bottom, this bottom is arranged to the upper surface near described piston, the top is arranged near described cap body, described mechanical bias device can compress by the motion of the described cap body of described piston towards, and this mechanical bias device is arranged to stop the motion of described piston, and described mechanical bias device is chosen as provides second resistance; And
Control valve unit, this control valve unit is positioned on the described inner tubular element, and can between open position and closed position, operate, this open position is used for that air is introduced described pneumatic spring chamber and from described pneumatic spring chamber discharging air, this closed position is used for air is remained in the described pneumatic spring chamber;
Take out the described first mechanical bias device, and replace by the second mechanical bias device, the described first mechanical bias device of the weight ratio of the described second mechanical bias device is lighter, and the described second mechanical bias device has the 3rd resistance, and the 3rd resistance is less than described second resistance; And
Air source is linked to each other with described control valve unit;
By described control valve unit air is introduced in the described pneumatic spring chamber, so that described first resistance is changed over the 4th resistance, the value of the 4th resistance is greater than the value of described first resistance, like this, the combination resistance of described the 3rd resistance and described the 4th resistance is basic identical with the combination resistance of first resistance and second resistance.
8. method according to claim 7 is characterized in that: described first mechanical bias device and the described second mechanical bias device are helical springs.
9. method according to claim 7 is characterized in that: described first mechanical bias device and the described second mechanical bias device are the elastomer portion of at least one elastically deformable.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US28055101P | 2001-03-29 | 2001-03-29 | |
| US60/280,551 | 2001-03-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1535362A true CN1535362A (en) | 2004-10-06 |
Family
ID=23073570
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA02807484XA Pending CN1535362A (en) | 2001-03-29 | 2002-03-29 | Coil and air suspension system |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP1373754A2 (en) |
| CN (1) | CN1535362A (en) |
| WO (1) | WO2002079021A2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822720A (en) * | 2016-04-29 | 2016-08-03 | 无锡港盛重型装备有限公司 | Electric car damping device |
| CN110280080A (en) * | 2019-07-16 | 2019-09-27 | 北京金帛科技有限公司 | Mechanical pulsing ash cleaning and dust removing device |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT7045U1 (en) | 2003-12-15 | 2004-09-27 | Komperdell Sportartikel Gmbh | DAMPING DEVICE |
| DE102007056313A1 (en) * | 2007-11-22 | 2009-05-28 | Canyon Bicycles Gmbh | Valve device for bicycle suspension strut for removing excess pressure, comprises closing element, which is arranged in valve outlet channel, where closing element seals outlet channel up to threshold pressure |
| US8511448B2 (en) | 2010-02-01 | 2013-08-20 | Trek Bicycle Corp. | Bicycle air shock assemblies with tunable suspension performance |
| CN114216667B (en) * | 2021-12-15 | 2024-06-04 | 北京机电工程研究所 | Suspension method for modal test and modal test method |
| CN114216668B (en) * | 2021-12-15 | 2024-06-04 | 北京机电工程研究所 | Modal test suspension device and modal test system |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4367882A (en) * | 1980-04-11 | 1983-01-11 | Battelle Memorial Institute | Suspension apparatus |
| US4807860A (en) * | 1984-06-28 | 1989-02-28 | Simons Stephen W | Motorcycle front fork anti-cavity damping system |
| US4958706A (en) * | 1988-11-14 | 1990-09-25 | Richardson Donald G | Adjustable shock absorbers |
| US5580075A (en) * | 1994-06-06 | 1996-12-03 | Rockshox, Inc. | Bicycle fork suspension with exchangeable spring unit |
| US5417446A (en) * | 1994-09-08 | 1995-05-23 | Halson Designs, Inc. | Air damping for bicycle shock absorbing fork |
| ES1029231Y (en) * | 1994-10-18 | 1995-11-01 | Pariente Antonio Cabrerizo | CUSHIONED BIKE FORK. |
| IT1287600B1 (en) * | 1996-12-19 | 1998-08-06 | Marzocchi Spa | ADJUSTABLE HYDROPNEUMATIC SHOCK ABSORBER, PARTICULARLY SUITABLE FOR FORMING THE LEGS OF A TELESCOPIC FORK FOR MOUNTAIN-BIKES. |
| WO1999058392A1 (en) * | 1998-05-11 | 1999-11-18 | Rockshox, Inc. | Damping and spring system for suspension system |
-
2002
- 2002-03-29 WO PCT/US2002/009904 patent/WO2002079021A2/en not_active Application Discontinuation
- 2002-03-29 CN CNA02807484XA patent/CN1535362A/en active Pending
- 2002-03-29 EP EP02736524A patent/EP1373754A2/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822720A (en) * | 2016-04-29 | 2016-08-03 | 无锡港盛重型装备有限公司 | Electric car damping device |
| CN110280080A (en) * | 2019-07-16 | 2019-09-27 | 北京金帛科技有限公司 | Mechanical pulsing ash cleaning and dust removing device |
| CN110280080B (en) * | 2019-07-16 | 2024-05-03 | 北京金帛科技有限公司 | Mechanical pulse ash and dust remover |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002079021A3 (en) | 2003-08-21 |
| EP1373754A2 (en) | 2004-01-02 |
| WO2002079021A2 (en) | 2002-10-10 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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