WO2005111459A1 - Systeme amortisseur a detente rapide et butee hydraulique de fin de course et procede d’utilisation - Google Patents
Systeme amortisseur a detente rapide et butee hydraulique de fin de course et procede d’utilisation Download PDFInfo
- Publication number
- WO2005111459A1 WO2005111459A1 PCT/FR2004/001005 FR2004001005W WO2005111459A1 WO 2005111459 A1 WO2005111459 A1 WO 2005111459A1 FR 2004001005 W FR2004001005 W FR 2004001005W WO 2005111459 A1 WO2005111459 A1 WO 2005111459A1
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- WO
- WIPO (PCT)
- Prior art keywords
- piston
- stop
- shock absorber
- housing
- oil
- Prior art date
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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
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/50—Special means providing automatic damping adjustment, i.e. self-adjustment of damping by particular sliding movements of a valve element, other than flexions or displacement of valve discs; Special means providing self-adjustment of spring characteristics
- F16F9/512—Means responsive to load action, i.e. static load on the damper or dynamic fluid pressure changes in the damper, e.g. due to changes in velocity
Definitions
- the present invention relates to a hydraulic shock absorber system, provided with a rapid expansion system and a hydraulic limit stop, intended for motor vehicles.
- the function of a quick release system is to allow the shock absorber to react appropriately when the reaction of the ground no longer compensates for the weight of the vehicle, for example when the wheel passes through a hole or when the wheel takes off from the ground.
- a shock absorber devoid of a rapid expansion system will relax too slowly to follow the profile of the hole. Consequently, when the reaction of the ground becomes high again by resumption of contact of the wheel with the ground, the damper system, which is not in its position of maximum relaxation, cannot therefore ensure optimal damping.
- a disadvantage of this shock absorber system is that the force at which the opening of the free passage occurs cannot be modified depending on the vehicle to which this system shock absorber is intended or the type of terrain on which the vehicle is intended to operate.
- a second drawback of this system is that, when the piston abuts against the upper internal surface of the body of the shock absorber, there is a metal against metal contact which causes premature wear of the shock absorber and noise for the user. .
- the function of an end-of-stroke stop is to dampen the stop of the damper cylinder rod when it sinks into the damper body and reaches the point of maximum compression.
- the object of the present invention is to provide a rapid expansion damper system in which the force at which the transition from slow relaxation to rapid relaxation occurs is adjustable depending on the vehicle for which the damping system is intended. or the type of terrain on which this vehicle is intended to operate.
- a shock absorber system comprising a tail and a body, in which slides a piston mounted on a first end of a tube and delimiting at least an upper chamber and a lower chamber in the body, the tail of the shock absorber comprising a tail body, integral with the second end of the tube and supporting a cup on which a spring reflects the weight of the vehicle, characterized in that the tail body comprises a substantially cylindrical housing, in which a piston slides, one end of the piston being integral with a first end of a rod sliding in the tube and another end of the piston being integral with a hook for fixing the shock absorber system to the vehicle, and in that the prestressing means exert a force which tends to move the sliding piston in the tail body, causing the rod in its displacement, as a function
- the piston consists of a stop piston and an annular part connected together by a hollow extension, and delimiting an upper chamber, an intermediate chamber and a lower chamber
- the stop piston comprising a recess in which is housed a non-return valve closed by a foil washer surmounted by a spring
- the passage of oil from the lower chamber to the upper chamber consists of a recess in the annular part in which the second end of the rod, of rectangular section, forms vertical channels, which communicate, on the one hand, with a cavity situated between the rod and the tube, in communication with the lower chamber, via radial channels drilled in the tube and , on the other hand, with the interior of the hollow extension, in communication with the upper chamber, via the non-return valve, the recess and the passage sections of the stop piston, this opening of a larger oil passage section allowing rapid expansion of the damper system.
- the prestressing means consist of a pressure differential between pneumatic cavities located on the and on the other side of the piston, this pressure differential making it possible to define the direction and the value of the prestressing force applied to the piston.
- the prestressing means consist of a plurality of conical spring washers interposed between the piston and the surfaces, respectively, upper or lower of the housing, the relaxation of said washers pushing the piston, respectively, downwards or upwards , thus defining the direction and the value of the prestressing force applied to the piston.
- the conical spring washers are mounted in opposition two by two.
- the number of conical spring washers is between 5 and 20.
- the reaction force on the ground at which the opening of a larger cross-section of oil passage between the cavities and is adjustable depends on the embodiment, by the pressure differential of the upper and lower chambers, or by the number, shape, stacking and position of the washers, which by applying a prestressing force on the tail piston, respectively, greater or less than the force applied to the hook causes the positioning of the tail piston secured to the rod, respectively, in the low or high position, respectively selecting a law of rapid or conventional expansion.
- the adjustment system consists of two inflation valves filled with pressurized air, each in connection with a cavity, the emptying or filling of said cavities by the inflation valves acting on a pneumatic piston connected to the rod.
- a second object of the present invention is to overcome the drawbacks of the prior art by proposing a stop allowing a progressive stop of the rod of the shock absorber whatever its speed of driving into the body, which eliminates the metal friction against metal between the piston and the body of stop, and which retains damping characteristics which are substantially constant over time.
- a damper system characterized in that the damper body also includes a stop body fixed at its upper end, a cylindrical portion of the stop piston trapping and compressing a volume oil contained in an open internal housing of the abutment body during the compression movement of the shock absorber, the internal housing of the abutment body being symmetrical in revolution and provided with a frustoconical inlet portion, followed by several frustoconical portions , of decreasing taper, the portion near the bottom of the housing being cylindrical with a diameter slightly greater than the diameter of the stop piston, to allow, during the movement of driving the stop piston into the housing, that a fraction of the volume d oil contained in the abutment body can flow back between the piston and the abutment body, this fraction decreasing as the piston advances e stop, which allows to generate a resistance to increasing penetration, which also allows the formation of a film of high pressure oil between the piston and the stop body which lubricates the contact between the surfaces of these two parts during the alternating and
- the abutment body is a cylinder of revolution with a diameter substantially equal to the inside diameter of the shock absorber body, a flat being formed from the lower end of the abutment body until a radial hole opening out on a second vertical bore located at the top of the stop body, in the center of the latter, the two holes communicating with each other, all of the two holes and the flat materializing a free passage for the oil from the body to the head of the shock absorber .
- the stop piston has at its lower end an enlarged portion, of diameter substantially equal to the inside diameter of the damper body, and provided with a plurality of vertical channels forming a free passage for the oil.
- the recess of the stop piston has a threaded portion which serves as a means of fixing the extension, a non-return valve being interposed between the bottom of the housing and the extension, the non-return valve being provided with a plurality of vertical channels which communicate with channels connecting the recess to the outside of the stop piston when the non-return valve is in the open position, thus forming a free passage for the oil.
- the stop piston is provided with radial horizontal channels connecting the internal housing to the periphery of the stop piston.
- the stop piston is provided with a plurality of vertical channels connecting the bottom of the housing to the horizontal surface constituting the end of the stop piston close to the stop body.
- the end of the stop piston close to the stop body is of frustoconical shape.
- Another object of the invention is to propose a method of using a rapid expansion damping system and hydraulic stop, characterized in that it consists in installing on the vehicle rapid expansion damping systems controlled by pressure pneumatic, this pressure being able to be modified, thanks to two valves, in each of the cavities located on either side of the tail piston and to determine optimal pressure values to allow the sliding of the piston in its housing in a manner adapted to the vehicle and on the ground encountered, then to replace the pneumatically controlled damping system, in which the prestressing means are pneumatic cavities, by a rapid expansion system in which the prestressing means are washers, the number, shape, size of which stack and position will be determined as a function of the prestressing force corresponding to the determined pneumatic pressure.
- FIG. 1 shows a front view of a shock absorber system
- - Figure 2 shows a sectional view of the damper system according to the invention along the plane AA of Figure 1
- - Figures 3 to 5 each show a detail view of Figure 2
- - Figure 6 shows a perspective view of the head of the damper system according to the invention
- - Figure 7 shows a sectional view of the head along the plane BB of Figure 3
- - Figure 8 shows a perspective view of the low speed adjustment screw of the damper system according to the invention
- - Figure 9 shows a sectional view of the high speed adjustment screw of the damper system according to the invention
- - Figure 10 shows a bottom view of the non-return valve of the damper system according to the invention
- - Figure 1 1 shows a sectional view of the inflation valve of the shock absorber system according to the invention
- - Figure 12 shows a front view of the stop body
- - Figure 13 shows a front view of the stop body
- the damper system of the present invention comprises a substantially vertical cylindrical body (1). It is screwed at its upper end to a head (2), and at its lower end to a plug (6).
- the head (2) visible in particular in FIGS. 3 and 6, comprises a hook (21) making it possible to fix the shock absorber system according to the invention to the vehicle which it is desired to equip with the shock absorber system according to invention.
- the head (2) also comprises a reservoir (22), visible in particular in FIGS. 3, 6 and 7, comprising an opening (23) connected to the body (1) of the damper system by a channel (24). This opening (23) is provided for the insertion of adjustment screws, low speed (4) or high speed (5), of compression, embodiments of which are shown respectively in FIGS.
- abutment body (120) comprising an internal housing (12) is fixed in the top of the body (1) of the shock absorber.
- This abutment body visible in particular in FIGS. 13, 14 and 15, is a cylinder of revolution with a vertical axis, an upper end of which forms a collar (121) intended to be clamped between the head (2) and the body ( 1) of the damper to allow positioning and maintenance of said abutment body (120).
- a radial bore (122) which communicates with a vertical bore (123) located in the center of the upper surface of the abutment body (120).
- the assembly of these two holes forms a channel which allows the oil contained in the body (1) to flow back towards the head (2) of the damper, the latter being traversed by a channel (24).
- a flat (124) is produced on the outer surface of the abutment body, this flat (124) covering the height between the collar (121) and the lower end of the abutment body (120).
- the flat (124) is arranged in such a way that the bore (122) is pierced on the surface thereof, in an orthogonal direction.
- a space is thus created between the internal surface of the body (1) of the damper and the flat (124), which materializes a free passage for the oil from the channel (24) of the head (2) of the damper towards the upper chamber (S) of the body (1), via the holes (122, 123), so that the adjustment screw (4, 5) for compressing the head is connected to said upper chamber (S).
- a tube (71) slides in the body (1) using guides, not shown.
- the outside diameter of the tube (71) is smaller than the inside diameter of the body (1) of the damper system so that it can slide freely inside said body (1).
- a substantially cylindrical rod (7) slides freely in the tube (71).
- the rod (7) ends at its upper end with a portion of substantially rectangular section (75), open at the top.
- the rectangular section of the rod (7) is less than its cylindrical section.
- the tube (71) is screwed, at its upper end, to an annular piece (11) of outside diameter substantially equal to the inside diameter of the body (1) of the damper system.
- a projection (112) is formed on this annular part (11), in the axis of the tube (71). Said projection (112) is screwed into the lower part of an extension (8), itself screwed, in its upper part, into a stop piston (10) which is provided with a tapped portion (106).
- the stop piston (10) in its lower part (105) is provided with an enlarged annular portion (105).
- the outside diameter of this enlarged portion (105) of the stop piston (10) is substantially equal to the inside diameter of the body (1) of the shock absorber system.
- the annular part (11) is crossed in the axis of the tube by a hole receiving, in its lower part, the upper end of the tube (71) and, in its projecting part (112), the upper end of the rod (7).
- the upper end of the rod (7), of rectangular section separates the hole passing through the annular part (11), in its projecting part (112), into two vertical channels (113), included on each side of the part of rectangular section (75) of the rod (7).
- a non-return valve (9) is inserted between the top of the extension (8) and the housing (104) of the stop piston (10), located at its widened part (105).
- This non-return valve (9) comprises a projection (92) around which is inserted a foil washer, not shown, held pressed against the valve (9) by a spring, not shown, which is held between the non-return valve. return (9) and the upper surface of said housing (104).
- the outside diameters of the extension (8) and of the main body of the stop piston (10) are smaller than the inside diameter of the body (1) of the damper system so that it can slide freely inside said body (1).
- the upper chamber (S) of the body (1) of the damper system is delimited, at the top, by the stop body (12), and at the bottom by the upper surface of the widened part (105) of the stop piston ( 10).
- the lower surface of the enlarged part (105) of the stop piston (10) and the upper surface of the annular part (11) delimit the intermediate chamber (M) of the body (1).
- the lower surface of the annular part (11) and the upper surface of the plug (6) define the lower chamber (I) of the body (1). All the chambers (S, M, I), as well as the space between the tube (71) and the rod (7), are filled with oil.
- the enlarged part (105) of the stop piston (10) comprises a plurality of vertical channels (101) which allow the passage of oil between the upper chamber (S) and the intermediate chamber (M).
- the non-return valve (9) also comprises a plurality of vertical channels (91) which make the connection between the extension (8) and the recess (104) of the stop piston (10).
- the stop piston (10) has channels (102, 108) which connect the housing (104) and the upper chamber (S).
- the annular part (11) comprises a plurality of vertical channels (111) located between the intermediate chamber (M) and the lower chamber (I), and closed by a preloading washer (115) defining the compression characteristics of the system. damper. Indeed, this washer (115) exerts a determined closing force that the oil pressure in the intermediate chamber (M) must overcome so that the oil is expelled towards the lower chamber (I), for the displacement of the piston of stop (10) in the direction of compression.
- a plurality of radial channels (72) are formed on the tube (71), at the level of the lower chamber (I). These radial channels (72) lead to a cavity (73) formed between the tube (71) and the rod (7), thanks to a hole made in the upper end of the tube (71). This bore is slightly larger in diameter than the diameter of the rod (7).
- This hole forming a cavity (73) between the rod (7) and the tube (71) can be replaced by flats made inside the tube (71), facing the radial channels (72), to form channels vertical oil passage between the tube (71) and the rod (7).
- This passage (73) opens, at its upper end, on the channels (1 13) between the rectangular section (75) of the rod (7) and the projecting part (112) of the annular part (11).
- the upper part of the tail (3) is integral with a cup (not shown) serving as a support for a spring (not shown) which reflects the weight of the vehicle supported by the head (2) on the lower end of the tube ( 71), integral with the tail (3) of the shock absorber.
- the tube (71) is screwed at its lower end into a thread (325) in the body (32, 32a) of the shank (3) of the shock absorber system.
- a hook (31) making it possible to fix the shock absorber system to the wheel of the vehicle to be equipped with said system, is integral with a tail piston (33, 33a) which slides in a housing (321) of the tail body ( 32, 32a).
- the tail piston (33, 33a) is integral with the rod (7) which slides in the tube (71).
- the damper relaxes and, for example, in the variant incorporating washers (39) springs in the tail of the damper, the washers (39) push back a tail piston (33a) and move it away from the tail body (32a).
- the tail piston (33a) then drives the rod (7) downward, relative to the tube (71), which enlarges the oil passage space at the other end of the rod (7) , between the cavity (73) and the vertical channels (113) of the annular part.
- the oil from the lower chamber (I) rises to the upper chamber through the radial channels (72) of the tube (71) and then through the cavity (73) formed between the tube (71) and the rod (7).
- the oil then flows through the vertical channels (1 13) included on each side of the rectangular section (75) of the rod (7), then, through the extension (8), the vertical channels (91 ) of the non-return valve (9), the housing (104) of the stop piston (10), and finally the channels (102, 108) of the stop piston (10).
- the tail (3) consists of a tail body (32) in which a pneumatic piston (33) slides guided by a tail guide (34).
- the fixing hook (31) is screwed into the pneumatic piston (33).
- Two cavities (35, 37) are respectively included between the tail body (32) and the tail piston (33), and between the tail piston (33) and the tail guide (34).
- Each of the inflation valves (15) makes it possible to introduce air under several bars and thus makes it possible to vary the pressure in the cavities (35, 37), which allows, by displacement of the piston (33) between the respective abutment surfaces (320, 340) of the tail body (32) and of the tail guide (34), acting on the height of the rod (7) relative to the annular part ( 11), by sliding, in the tube (71) integral with the tail body (32), the rod (7) whose lower end is integral with the tail piston (33).
- This system thus makes it possible to adjust the flow rate of oil passing from the cavity (73) formed between the tube (71) and the rod (7), to the vertical channels (113) included on each side of the part of rectangular section ( 75) of the rod (7), and therefore to modify the speed of the relaxation.
- a second variant of the rapid expansion damper system consists in using washers (39) with conical springs in the tail (3) of the damper.
- the thread (325), into which the tube (71) is screwed opens into a housing (321) substantially cylindrical with a diameter greater than that of the thread (325).
- the housing (321) accommodates a piston (33a) of the tail provided with a thread (330) intended for fixing the rod (7).
- the end of the piston (33a) opposite the internal thread (330) is screwed on the hook (31).
- a secondary piston (33b) which slides in a guide (34a) screwed on the tail body (32a).
- the secondary piston (33b) closes the housing (321) of the tail body (32a). Between the piston (33a) and the upper (320) or lower (340) surface of the housing (321) is interposed a plurality of washers (39) conical springs. These washers (39) conical springs, called “Belleville”, are mounted in opposition two by two and are all identical. This assembly allows the addition of the elementary deflections of the washers (39). These spring washers (39) ensure an operation identical to that of the shock absorber system using the pneumatic piston (33), visible in FIG. 5.
- the washers (39) conical springs are mounted between the piston (33a) and the upper surface (320) of the housing (321), they are compressed when a compressive force is applied to the damper and relax when the reaction force on the ground tends to cancel out.
- the washers (39) push the piston (33a).
- the latter being integral with the rod (7), it causes a displacement of the rod (7) relative to the tube (71).
- This movement allows the rapid expansion system to operate, which is therefore facilitated by the presence of the washers (39) between the piston (33a) and the upper surface (320) of the housing (321).
- the trigger of the rapid expansion system is done later, that is to say for very low ground reaction forces.
- the washers (39) will be interposed between the piston (33a) and the lower surface (340) of the housing (321), so as to push the piston (33a) upwards.
- the triggering of the rapid expansion system that is to say the opening of a larger oil passage section through the vertical channels (113), will take place when the weight of the vehicle wheel exerts sufficient force on the hook (31), towards the ground, to compress the washers (39).
- the location, number and dimensions of the washers (39) are variable and depend on many factors (position of the shock absorber, weight and type of vehicle, behavior of the desired shock absorber, etc.)
- the thickness of the washers ( 39) conical springs used is a function of the admissible force; the number of washers (39) will depend, among other factors, on their thickness and the desired travel.
- the number of washers (39) conical springs used will be for example eight.
- the outside diameter of the washers (39) will be slightly smaller than the inside diameter of the housing (321).
- the first alternative embodiment of the rapid expansion damper system consisting in using an air pressure disposed between the two cavities (35, 37), as shown in FIG. 12, makes it possible to adjust the force at which the trigger will be triggered.
- This variant makes it possible to adjust the preload applied to the tail piston (33, 33a) and therefore to adjust the threshold for triggering rapid expansion.
- This variant will generally be used, for example, in the testing and adaptation phases of the characteristics of the shock absorber to the vehicle and to the path encountered by the vehicle.
- the hydraulic stop piston (10a, 10b) is a piston of which an upper part (103) is of cylindrical external shape surmounted by a portion (107) of frustoconical shape.
- the stop piston (10a, 10b) is intended to cooperate with the stop body (120).
- the abutment body (120) has at its lower end a housing (12) opening at the lower end of the abutment body (120) and closed at the opposite end.
- the internal surface of the housing (12) is a surface of continuous revolution composed of several sections (12a, 12b, 12c, 12d).
- the section (12d) furthest from the opening of the housing (12) is cylindrical in shape.
- the other three sections (12a, 12b, 12c) are of frustoconical shape, and the conicity of these three sections is different, this being all the greater the closer the section concerned is to the opening of the housing (12 ).
- the cylindrical section (12d) constitutes the smallest diameter of the housing (12). This diameter is very close to the outside diameter of the stop piston (10a, 10b), but slightly greater than the latter.
- the stop piston (10a, 10b) when the tube (71) sinks at high speed into the body (1), for example when the vehicle approaches the reception of a bump or a hole, the stop piston (10a, 10b) will penetrate inside the housing and trap a volume (V) of oil contained in the housing (12). As it progresses inside the housing (12), the stop piston (10a, 10b) will gradually compress the volume (V) of oil contained in the housing (12), thereby creating resistance to the progressive depression of the stop piston (10a, 10b). The progressiveness of the resistance to depression of the stop piston (10a, 10b) is ensured by virtue of the profile of the housing (12), as visible in FIG. 12.
- the conical sections (12a, 12b, 12c) close of the housing opening (12) create sufficient space between the outer surface of the stop piston (10a, 10b) and the surface interior of the housing (12) so that a part of the oil contained in the housing (12) can flow back towards the outside thereof.
- the volume of refluxing oil becomes smaller and smaller, thus gradually increasing the resistance to depression of the stop piston (10a, 10b).
- the space remaining between these two parts resulting from a difference between the internal diameter of the housing (12) and the external diameter of the stop piston (10a, 10b), allows the formation of an oil film (F) refluxing at very high pressure.
- This oil film (F) then plays the role of lubricant and makes it possible to avoid metal against metal friction during repeated movements of the stop piston (10a, 10b) inside the housing (12) of the stop body. (120).
- the very low compressibility of the oil allows very high resistance to be obtained at the end of the stroke.
- the first variant (10a) of the stop piston is more particularly adapted to a shock absorber intended for a wheel located at the rear of the vehicle.
- the second variant (10b) is more particularly adapted to a shock absorber intended for a wheel located at the front of the vehicle.
- the two stop pistons (10a, 10b) have many common characteristics, including the cylindrical upper part (103), surmounted by a frustoconical portion (107).
- the lower part of the stop piston (10a, 10b) is a substantially cylindrical portion (105), of diameter slightly smaller than the inside diameter of the body (1) of the shock absorber. This cylindrical portion (105) is crossed by a plurality of vertical channels (101) allowing the passage of the oil.
- the open cylindrical housing (104) At the lower end of the stop piston (10a, 10b) is the open cylindrical housing (104).
- a portion close to the opening of the housing (104) has a thread (106) which allows the extension of the extension (8).
- a portion close to the bottom of the housing, of diameter adapted to the non-return valve (9), is visible in FIGS. 11, 23 and 24.
- the first variant of the stop piston (10a) comprises above the lower cylindrical portion (105) four radial holes which materialize four channels (102) connecting the housing (104) outside of the stop piston.
- the second variant of the stop piston (10b) comprises four vertical bores (108) arranged on the same diameter of the upper surface of the frustoconical portion (107). These four holes (108) are equidistant and open into the housing (104).
- the channels are used for the transit of the oil during the expansion phase of the damper.
- the channels (102) are horizontal and the oil is discharged at the periphery of the stop piston (10a) during the expansion phase.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
- Vehicle Body Suspensions (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/599,956 US8172052B2 (en) | 2004-04-26 | 2004-04-26 | Rapid recovery shock absorber system with hydraulic end stop and method for use thereof |
CA002563794A CA2563794A1 (fr) | 2004-04-26 | 2004-04-26 | Systeme amortisseur a detente rapide et butee hydraulique de fin de course et procede d'utilisation |
JP2007508926A JP4633112B2 (ja) | 2004-04-26 | 2004-04-26 | 急速回復式および油圧式端部停止を備えた衝撃吸収装置および利用方法 |
PCT/FR2004/001005 WO2005111459A1 (fr) | 2004-04-26 | 2004-04-26 | Systeme amortisseur a detente rapide et butee hydraulique de fin de course et procede d’utilisation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/FR2004/001005 WO2005111459A1 (fr) | 2004-04-26 | 2004-04-26 | Systeme amortisseur a detente rapide et butee hydraulique de fin de course et procede d’utilisation |
Publications (1)
Publication Number | Publication Date |
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WO2005111459A1 true WO2005111459A1 (fr) | 2005-11-24 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/FR2004/001005 WO2005111459A1 (fr) | 2004-04-26 | 2004-04-26 | Systeme amortisseur a detente rapide et butee hydraulique de fin de course et procede d’utilisation |
Country Status (4)
Country | Link |
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US (1) | US8172052B2 (fr) |
JP (1) | JP4633112B2 (fr) |
CA (1) | CA2563794A1 (fr) |
WO (1) | WO2005111459A1 (fr) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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US8613667B2 (en) | 2009-12-21 | 2013-12-24 | Wms Gaming, Inc. | Position-based lighting coordination in wagering game systems |
RU2597051C1 (ru) * | 2015-06-05 | 2016-09-10 | Владислав Сергеевич Бакташев | Способ восстановления работоспособности амортизатора транспортного средства |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2011080795A1 (fr) * | 2009-12-28 | 2011-07-07 | 株式会社テイン | Dispositif de suspension |
GB201318522D0 (en) * | 2013-10-21 | 2013-12-04 | Capital Safety Group Northern Europ Ltd | Fall arrest apparatus |
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US6161662A (en) * | 1999-03-16 | 2000-12-19 | Delphi Technologies, Inc. | Suspension damper for motor vehicle |
FR2796431A1 (fr) | 1999-07-16 | 2001-01-19 | Nicolas Carlier | Systeme d'amortisseur a huile |
US20020175035A1 (en) * | 2001-05-10 | 2002-11-28 | Dt Swiss Ag | Suspension system for bicycles |
WO2004040164A2 (fr) * | 2002-10-25 | 2004-05-13 | Amortisseur Donerre | Butee hydraulique d’amortisseur pour vehicule system armortisseur et procede d’utilisation |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
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DE2619176C2 (de) * | 1976-04-30 | 1982-10-21 | Stabilus Gmbh, 5400 Koblenz | Gasfeder mit aufgehobener Ausschubkraft bei eingefahrener Kolbenstange |
DE2942455A1 (de) * | 1979-10-20 | 1981-04-30 | Fritz Bauer + Söhne oHG, 8503 Altdorf | Laengenverstellbare gasfeder |
FR2664210B1 (fr) * | 1990-07-06 | 1994-10-21 | Bianchi Mauro Sa | Procede de suspension du type utilisant une raideur plus grande dans la course de "rebond" que dans la course de "choc" comportant un moyen pour adoucir le passage d'une raideur a l'autre et son dispositif de mise en óoeuvre. |
US5339930A (en) * | 1992-05-26 | 1994-08-23 | Westinghouse Air Brake Company | Constant tension device for railway car handbrake |
JPH06346937A (ja) * | 1993-06-08 | 1994-12-20 | Ckd Corp | 緩衝器 |
US6189663B1 (en) * | 1998-06-08 | 2001-02-20 | General Motors Corporation | Spray coatings for suspension damper rods |
US6659239B2 (en) * | 2001-09-10 | 2003-12-09 | Meritor Heavy Vehicle Technology, Llc | Shock absorber through the rod damping adjustment |
-
2004
- 2004-04-26 WO PCT/FR2004/001005 patent/WO2005111459A1/fr active Application Filing
- 2004-04-26 JP JP2007508926A patent/JP4633112B2/ja not_active Expired - Fee Related
- 2004-04-26 US US10/599,956 patent/US8172052B2/en active Active
- 2004-04-26 CA CA002563794A patent/CA2563794A1/fr not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US6161662A (en) * | 1999-03-16 | 2000-12-19 | Delphi Technologies, Inc. | Suspension damper for motor vehicle |
FR2796431A1 (fr) | 1999-07-16 | 2001-01-19 | Nicolas Carlier | Systeme d'amortisseur a huile |
US20020175035A1 (en) * | 2001-05-10 | 2002-11-28 | Dt Swiss Ag | Suspension system for bicycles |
WO2004040164A2 (fr) * | 2002-10-25 | 2004-05-13 | Amortisseur Donerre | Butee hydraulique d’amortisseur pour vehicule system armortisseur et procede d’utilisation |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8613667B2 (en) | 2009-12-21 | 2013-12-24 | Wms Gaming, Inc. | Position-based lighting coordination in wagering game systems |
RU2597051C1 (ru) * | 2015-06-05 | 2016-09-10 | Владислав Сергеевич Бакташев | Способ восстановления работоспособности амортизатора транспортного средства |
Also Published As
Publication number | Publication date |
---|---|
JP2007534901A (ja) | 2007-11-29 |
CA2563794A1 (fr) | 2005-11-24 |
JP4633112B2 (ja) | 2011-02-16 |
US8172052B2 (en) | 2012-05-08 |
US20070205063A1 (en) | 2007-09-06 |
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