GB2055172A - Elastomeric mounting with fluid damping of high amplitude oscillations - Google Patents
Elastomeric mounting with fluid damping of high amplitude oscillations Download PDFInfo
- Publication number
- GB2055172A GB2055172A GB8018465A GB8018465A GB2055172A GB 2055172 A GB2055172 A GB 2055172A GB 8018465 A GB8018465 A GB 8018465A GB 8018465 A GB8018465 A GB 8018465A GB 2055172 A GB2055172 A GB 2055172A
- Authority
- GB
- United Kingdom
- Prior art keywords
- shock
- chamber
- supporting body
- tubular supporting
- absorbing mounting
- 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.)
- Granted
Links
- 238000013016 damping Methods 0.000 title claims abstract description 22
- 230000010355 oscillation Effects 0.000 title claims abstract description 19
- 239000012530 fluid Substances 0.000 title claims abstract description 10
- 230000008878 coupling Effects 0.000 claims abstract description 20
- 238000010168 coupling process Methods 0.000 claims abstract description 20
- 238000005859 coupling reaction Methods 0.000 claims abstract description 20
- 229920001971 elastomer Polymers 0.000 claims abstract description 14
- 239000000806 elastomer Substances 0.000 claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 claims abstract description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000013459 approach Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/04—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper
- F16F13/06—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper
- F16F13/08—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a plastics spring and a damper, e.g. a friction damper the damper being a fluid damper, e.g. the plastics spring not forming a part of the wall of the fluid chamber of the damper the plastics spring forming at least a part of the wall of the fluid chamber of the damper
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Combined Devices Of Dampers And Springs (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
A shock-absorbing mounting (for example, for supporting a vehicle engine on the vehicle chassis), comprises a tubular supporting body 10 which is connected by an annular element 16 of elastomer material to a coupling member 22. The tubular body 10 is closed off by a transverse wall 34 to define a liquid filled chamber 40. A piston-like plate element 32 connected to the coupling member 22 divides the chamber 40 into two-subchambers 40a, 40b which communicate around the periphery of the plate element 32. Large amplitude low frequency oscillations of tie coupling member 22 cause fluid to be forced between the sub-chambers (40a, 40b) to produce a fluid damping effect. At least a part of the chamber wall is resiliently yieldable to enable the absorption of small amplitude high frequency oscillations without any fluid damping being produced. Instead of the transverse wall 34 being made resilient, the elastomeric element may be made with thinner portions so that it can yield. <IMAGE>
Description
SPECIFICATION
Shock absorbing mounting
The present invention relates to a shockabsorbing mounting for supporting an oscillating body on a support structure, and in particular, but not exclusively to such mountings for supporting the engine of a motor vehicle on the vehicle chassis.
Shock-absorbing mountings are known of the type comprising a tubular supporting body arranged for secural to the support structure; a coupling member arranged coaxially with respect to said tubular supporting body and serving to couple the mounting with the oscillating body; an annular element of elastomer material secured by its outer and inner peripheral portions respectively to one end of the tubular supporting body and to said coupling member; and a fluid-flow damper for damping oscillations of the coupling member relative to the tubular supporting body.
Shock-absorbing mountings of this type serve to dissipate some of the energy of the oscillating body and thereby provide sufficient absorption of the vibrations of this body to prevent oscillations of excessive amplitude such as otherwise might occur, for example, when the frequency of vibrations of the oscillating body approaches the resonant frequency of the body. In certain applications it is desirable to have a strong damping action when the oscillations of the oscillating body are of large amplitude (that is, of low frequency), and an extremely low damping action when the oscillations are of small amplitude (high frequency).In particular, the mounting supporting an engine on the chassis of a motor vehicle should provide for efficient damping of the engines oscillations when it is running at low speed or when the vehicle is subjected to sudden jolts produced by uneven ground, whilst when the engine is running at high speed the damping provided by the mountings should be as small as possible so that the engine is insulated from the chassis and comfortable running conditions are ensured.
It is an object of the present invention to provide a shock-absorbing mounting of the abovementioned type which while being simple, robust and efficient, is so arranged that the fluid damper becomes effective only when the amplitude of vibration of the oscillating body exceeds a given value.
With a view to achieving this object, the present invention provides a shock-absorbing mounting of the type specified above, wherein -the tubular supporting body is provided at its end remote from said annular element of elastomer material with a transverse wall which together with said annular element delimits a chamber within said tubular supporting body, said chamber containing a damping liquid, -the coupling member is provided with a stem which extends coaxially within said chamber and carries a transverse plate element which divides the chamber into two sub-chambers, said sub
chambers communicating with each other via an
annular passage comprised between the internal
wall of the tubular supporting body and the
periphery of the said plate element, and -at least one part of the walls of said internal
chamber yields resiliently so as to absorb latent
volume variations in said chamber due to
oscillations of the coupling member relative to the
tubular supporting body of an amplitude less than
a predetermined value.
A shock-absorbing mounting embodying the
invention and suitable for use in mounting the
engine of a motor vehicle on the vehicle chassis,
will now be particularly described, by way of
example, with reference to the accompanying
diagrammatic drawings, in which:
Figure 1 is an axial section of the shock
absorbing mounting;
Figure 2 is an axial section of a first variant of
the Figure 1 mounting;
Figure 3 is a section on line Ill-Ill of Figure 2;
Figure 4 is an axial section of a second variant
of the Figure 1 mounting; and
Figure 5 is a plan view in the direction of arrow
V in Figure 4.
As shown in Figure 1, the shock-absorbing
mounting comprises a tubular metal supporting
body 10 intended to be fixed to the chassis of a
motor vehicle. The tubular body 10 is provided at
one end with an annular flange 12 and at the
opposite end it coaxially supports a metal ring 14.
The internal surface of the ring 14 is of frusto
conical form, diverging upwardly. Fixed to the
internal surface of the ring 14 is a correspondingly
formed portion of the external surface 18 of an
annular element 1 6. The element 1 6 is composed
of an elastomer material and is substantially bell
shaped with a central upwardly-divergent frusto
conical aperture. The upper portion of the external
surface 18 of the element 1 6 is a convex in form
and the lower portion of the internal surface 20 of
the element 1 6 is of concave-convex form.
A metal coupling member 22 constituted by a
double-ended socket of frusto-conica I external
form is bonded in position within the central
frusto-conical aperture of the annular element 1 6 with its wider end uppermost. The coupling member 22 is provided with two blind threaded
axial holes 24 and 30 which respectively open into
the upper and lower end faces of the member 22.
The upper axial hoie 24 serves to engage a
correspondingly threaded coupling element, not
illustrated, which is fixed to the engine of the
vehicle. Engaged in the lower axial hole 30 of the
coupling member 22 is the threaded end portion
28 of a stem 26 which extends coaxially inside the
tubular supporting body 10. The end of the stem
26 opposite the threaded portion 28 supports a
transverse plate element in the form of a washer
32.
At its end remote from the elastomer element
16, the tubular supporting body 10 is closed by a
transverse wall 34 in the form of an annular
diaphragm of elastomer material 36 whose
periphery is fixed to an annular flange 38. The flange 38 is connected to the annular flange 12 of the tubular supporting body 10. In the cross section, the diaphragm 36 has a serrated profile due to the provision a number of concentric annular grooves 36a, 36b respectively formed in the internal surface and external surface of diaphragm 36.
The tubular supporting body 10, together with the annular elastomer element 16 and the transverse wall 34, define a chamber 40 which contains a damping liquid. The washer 32 subdivides the chamber 40 into a first variablevolume chamber 40a and a second variablevolume chamber 40b which communicate with each other via an annular passage 42 comprised between the internal wall of the tubular supporting body 10 and the peripheral edge of the transverse washer 32.
When in use, the tubular supporting body 10 is fixed to the chassis of a motor vehicle and the coupling member 22 is connected to part of the vehicle engine.
Whilst the engine is in operation and/or whilst the vehicle is in motion, the shock absorbing mounting is capable of absorbing both oscillations of the engine which are directed along the axis of the tubular body 10, and oscillations which are perpendicular to this axis. The shock-absorbing mounting exhibits a strong damping action in the presence of high-amplitude displacement oscillations of the engine (such as are produced, for example, when the engine is running at low speed or when the vehicle is passing over uneven ground), and a very slight damping action in the presence of oscillations of small amplitude (such as produced when the engine is running at a high speed).In general, any elastic deformation of the annular elastomer element 16 tends to produce a variation in volume of the chamber 40 and where this variation is below a certain size it is compensated for by elastic deformation of the diaphragm 36. Once the diaphragm 36 has become fully distended it subsequently acts as a rigid element so that further deformation of the elastomer element 1 6 causes damping fluid to be forced to flow via the annular passage 42 between the chambers 40a and 40b, to produce a viscous damping effect, the direction of this flow being dependent on whether the deformation of the element 16 is such as to decrease or increase the volume of chamber 40a.
It will be appreciated that small-amplitude oscillations produce latent volume variations in the chamber 40 which are completely absorbed by elastic deformation of the diaphragm 36. As a result, there is no substantial passage of fluid between chambers 40a and 40b so that no viscous damping is produced.
The variants of the shock-absorbing mounting which are illustrated in Figures 2 to 5 are general similar to the embodiment illustrated in Figure 1, so that in the following only the differences will be described in detail, the same reference numerals being used for identical or similar components.
In the first variant illustrated in Figures 2 and 3, the transverse wall 34 is formed by a metal disc 44. The concave-convex inner surface 20 of the annular element 1 6 is formed with a pair of impressions or hollows 46 positioned diametrically opposite each other. The annular element 1 6 therefore has two opposing areas 1 6a of reduced axial thickness which give the element 1 6 differential radial flexibility along two mutuallyperpendicular axes A and B (see Figure 3).
In this variant the transverse washer 32 is provided with a buffer 48 of elastomer material 48 which faces the disc 44.
In use, the areas 1 6a of the annular element 1 6 deform elastically in the presence of small amplitude oscillations of the coupling member 22 relative to the supporting tubular body 10 so that the latent volume variations of the chamber 40 are absorbed without any viscous damping being thereby produced.
However, in the presence of large amplitude oscillations, the areas 1 6a are quickly fully distended so that the annular element 1 6 acts for the most part as a rigid element. As a result, damping fluid flows alternatively between the two chambers 40a and 40b via the annular passage 42, giving rise to a viscous type damping. The elastomer buffer 48 serves as a stop to limit the axial displacement of the coupling member 22 towards the disc 44.
The second variant of the shock-absorbing mounting illustrated in Figures 4 and 5 differs from the embodiment of Figure 1 only in that the convex outer surface 1 8 of the annular element 1 6 is formed with a pair of hollows or impressions 50 positioned diametrically opposite each other. The surface of the hollows 50 corresponds to that of a cylinder with its axis horizontal. As for the hollows 46 of the shock-absorbing mounting illustrated in
Figures 2 and 3, the hollows 50 give the element 16 a differential radial flexibility along two mutually-perpendicular axes C and D (see Figure 5). In correspondence with the hollows 50, the element 1 6 has two areas 1 6b which are of reduced axial thickness.
In use of the second mounting variant, the parts of reduced thickness 1 6b will deform elastically, jointly with the diaphragm 36, to absorb latent volume variations in chamber 40 arising from small amplitude oscillations of the coupling member 22 relative to the tubular supporting body
10 without the production of any viscous damping.
The number and form of the hollows 46 of the shock-absorbing mounting illustrated in Figures 2 and 3 and of the hollows 50 of the shockabsorbing mounting illustrated in Figures 4 and 5 can be varied; thus, for example more than two hollows can be provided circumferentially spaced from each other around the element 16, or the hollows may take the form of concentric annular grooves spaced radially from one another.
Claims (10)
1. A shock-absorbing mounting for supporting an oscillating body on a support structure, said mounting comprising a tubular supporting body arranged for secural to the support structure; a coupling member arranged coaxially with respect to said tubular supporting body and serving to couple the mounting with the oscillating body; an annular element of elastomer material secured by its outer and inner peripheral portions respectively to one end of the tubular supporting body and to said coupling member; a transverse wall closing off the tubular supporting body at a location remote from the said annular element whereby to delimit together with said annular element a chamber within said tubular supporting body, said chamber containing a damping liquid; and a transverse plate element supported within the chamber on a stem which extends coaxially from the coupling member, said transverse plate element serving to divide the chamber into two sub-chambers which communicate with each other via an annular passage comprised between the internal wall of the tubular supporting body and the periphery of the said plate element, at least one part of the walls of said internal chamber being resiiiently yieldable so as to absorb latent volume variations in said chamber due to oscillations of the coupling member relative to the tubular supporting body which are of an amplitude less than a predetermined value, oscillations of an amplitude greater than said predetermined value causing damping fluid to be forced between said sub-chambers whereby to produce a fluid damping effect.
2. A shock-absorbing mounting according to
Claim 1, in which the said transverse wall closing off the tubular supporting body is in the form of an elastic diaphragm and constitutes the said yieldable chamber wall part.
3. A shock-absorbing mounting according to
Claim 2, in which the said annular element of elastomer material has areas of a reduced axial thickness which form further elastically yieldable wall parts of said chamber.
4. A shock-absorbing mounting according to
Claim 3, in which the said areas of reduced axial thickness of the annular element are formed by circumferentially spaced impressions in the external surface of the annular element.
5. A shock-absorbing mounting according to
Claim 4, in which the said impressions are two in number and are positioned diametrically opposite each other.
6. A shock-absorbing mounting according to
Claim 1, in which the said transverse wall closing off the tubular supporting body is rigid, the said annular element being provided with areas of a reduced axial thickness which constitute the said yieldable wall-part of the chamber.
7. A shock-absorbing mounting according to
Claim 6, in which the said areas of reduced axial thickness of the annular element are formed by circumferentially spaced impressions provided in the internal surface of the annular element.
8. A shock-absorbing mounting according to
Claim 7, in which the said impressions are two in number and are positioned diametrically opposite each other.
9. A shock-absorbing mounting according to
Claim 6, in which the said transverse plate element is provided with a buffer of elastomer material facing the transverse wall closing off the tubular supporting body.
10. A shock-absorbing mounting substantially as hereinbefore described with reference to Figure 1, Figure 2 and 3, or Figures 4 and 5 of the accompanying drawings.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT23967/79A IT1165137B (en) | 1979-06-29 | 1979-06-29 | CUSHIONING SUPPORT FOR THE SUSPENSION OF A SWINGING BODY TO A SUPPORT STRUCTURE, IN PARTICULAR FOR THE SUSPENSION OF THE ENGINE TO THE FRAME OF A VEHICLE |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2055172A true GB2055172A (en) | 1981-02-25 |
| GB2055172B GB2055172B (en) | 1983-07-06 |
Family
ID=11211200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8018465A Expired GB2055172B (en) | 1979-06-29 | 1980-06-05 | Oscillation |
Country Status (6)
| Country | Link |
|---|---|
| JP (1) | JPS566934A (en) |
| DE (1) | DE3023544A1 (en) |
| ES (1) | ES8101739A1 (en) |
| FR (1) | FR2461165B1 (en) |
| GB (1) | GB2055172B (en) |
| IT (1) | IT1165137B (en) |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2524951A1 (en) * | 1982-04-09 | 1983-10-14 | Gomma Antivibranti Applic | AMORTIZING STAND |
| EP0101072A1 (en) * | 1982-08-17 | 1984-02-22 | Firma Carl Freudenberg | Rubber support with hydraulic damping |
| FR2533506A1 (en) * | 1982-09-28 | 1984-03-30 | Ouest Cie | ANTI-VIBRATION ELASTIC SUPPORT |
| GB2129910A (en) * | 1982-09-09 | 1984-05-23 | Continental Gummi Werke Ag | Hydraulically damped elastomeric mounting |
| FR2537233A2 (en) * | 1982-10-28 | 1984-06-08 | Continental Gummi Werke Ag | HYDRAULICALLY DAMPED ELASTIC SUPPORT |
| EP0133122A1 (en) * | 1983-07-21 | 1985-02-13 | Hutchinson | Vibration-damping device |
| GB2150257A (en) * | 1983-11-25 | 1985-06-26 | Imp Clevite Inc | Spring strut with elastomeric particles |
| EP0187459A2 (en) * | 1984-12-24 | 1986-07-16 | Ford Motor Company Limited | Assembly for mounting a vibrating body |
| EP0240028A2 (en) * | 1986-04-04 | 1987-10-07 | Adolf Fähnle GmbH & Co. KG | Device for spring mounted support of machines on floor |
| FR2600738A1 (en) * | 1986-06-30 | 1987-12-31 | Tokai Rubber Ind Ltd | ELASTIC FLUID-FILLING SLEEVE WITH DAMPING MEANS IN FLUID CHAMBERS. |
| FR2600736A1 (en) * | 1986-06-30 | 1987-12-31 | Tokai Rubber Ind Ltd | ELASTIC SLEEVE WITH FLUID FILLING COMPRISING DAMPING MEANS IN THE FLUID CHAMBERS. |
| GB2195166A (en) * | 1986-09-19 | 1988-03-30 | Dunlop Ltd | Elastomeric mounting |
| EP0410896A1 (en) * | 1989-07-28 | 1991-01-30 | Paulstra Gmbh | Improvements on hydraulic vibration dampers |
| US6131894A (en) * | 1998-08-10 | 2000-10-17 | Yamashita Rubber Kabushiki Kaisha | Liquid sealed type rubber mount device |
| US6267362B1 (en) | 1999-02-10 | 2001-07-31 | Yamashita Rubber Kabushiki Kaisha | Liquid sealed type elastic mount |
| US6311963B1 (en) | 1998-12-22 | 2001-11-06 | Tokai Rubber Industries, Ltd. | Fluid-filled vibration damping device |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60104824A (en) * | 1983-11-09 | 1985-06-10 | Honda Motor Co Ltd | Fluid-contained engine mount |
| IT1173046B (en) * | 1984-01-17 | 1987-06-18 | Gomma Antivibranti Applic | ENGINE SUPPORT |
| DE3410669A1 (en) * | 1984-03-23 | 1985-10-24 | Metabowerke GmbH & Co, 7440 Nürtingen | DAMPING ELEMENT AND ITS INSTALLATION IN A MOTOR-DRIVEN HAND TOOL |
| JPS60249749A (en) * | 1984-05-24 | 1985-12-10 | Bridgestone Corp | Vibro-isolator |
| DE3745115C2 (en) * | 1986-06-30 | 1999-02-04 | Tokai Rubber Ind Ltd | Sprung support with fluid damping |
| JPH0681974B2 (en) * | 1987-02-20 | 1994-10-19 | 東海ゴム工業株式会社 | Fluid filled anti-vibration bush |
| JPS6412153A (en) * | 1987-07-02 | 1989-01-17 | Tokai Rubber Ind Ltd | Fluid encapsulated mount |
| DE3737252A1 (en) * | 1987-11-03 | 1989-05-24 | Wolf Woco & Co Franz J | HYDRAULIC DAMPED ELASTOMER METAL BEARING |
| JPS63289349A (en) * | 1988-04-26 | 1988-11-25 | Tokai Rubber Ind Ltd | Fluid sealing type vibrationproof bush |
| DE3834585A1 (en) * | 1988-10-11 | 1990-04-12 | Opel Adam Ag | ENGINE MOUNT |
| DE4106838A1 (en) * | 1991-03-04 | 1992-09-10 | Metzeler Gimetall Ag | DAMPING AGGREGATE BEARING |
| DE19522640C2 (en) * | 1995-06-22 | 1998-04-09 | Metzeler Gimetall Ag | Hydraulically damping bearing |
| DE10334901A1 (en) * | 2003-07-29 | 2005-02-17 | Volkswagen Ag | Carrying unit for engine and gearbox of vehicle, comprising additional absorbing device for longitudinal vibrations |
| JP2014066366A (en) * | 2014-01-15 | 2014-04-17 | Bridgestone Corp | Vibration control device |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR887567A (en) * | 1941-11-18 | 1943-11-17 | Rheinische Gummi & Celluloid | Improvements to vibration dampers |
| DE1114062B (en) * | 1959-12-09 | 1961-09-21 | Phoenix Gummiwerke Ag | Elastic bearing |
| US3368807A (en) * | 1966-01-19 | 1968-02-13 | Litton Systems Inc | Vibration isolator |
| US3658314A (en) * | 1969-08-18 | 1972-04-25 | Clevite Corp | Elastomeric fluid shock absorber |
| FR2212012A5 (en) * | 1972-12-21 | 1974-07-19 | Arfina | |
| FR2218508B1 (en) * | 1973-02-19 | 1978-03-10 | Pineau Andre | |
| FR2255508B1 (en) * | 1973-12-21 | 1976-10-08 | Vibrachoc Sa | |
| DE2621725C3 (en) * | 1976-04-13 | 1979-05-03 | Audi Nsu Auto Union Ag, 7107 Neckarsulm | Rubber mount with hydraulic damping |
| DE7613130U1 (en) * | 1976-04-27 | 1977-02-10 | Boge Gmbh, 5208 Eitorf | Rubber-elastic engine mount with hydraulic damping, especially for motor vehicles Böge GmbH, 5208 Eitorf |
| DE2652501A1 (en) * | 1976-11-18 | 1978-05-24 | Phoenix Gummiwerke Ag | Automotive engine resilient mounting - has rubber body supported by bonded ring on throttle chamber partition |
-
1979
- 1979-06-29 IT IT23967/79A patent/IT1165137B/en active
-
1980
- 1980-06-05 GB GB8018465A patent/GB2055172B/en not_active Expired
- 1980-06-24 DE DE19803023544 patent/DE3023544A1/en active Granted
- 1980-06-25 FR FR8014475A patent/FR2461165B1/en not_active Expired
- 1980-06-25 ES ES492728A patent/ES8101739A1/en not_active Expired
- 1980-06-27 JP JP8673180A patent/JPS566934A/en active Granted
Cited By (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2524951A1 (en) * | 1982-04-09 | 1983-10-14 | Gomma Antivibranti Applic | AMORTIZING STAND |
| GB2119474A (en) * | 1982-04-09 | 1983-11-16 | Saga Spa Soc Applic Gomma Anti | Fluid damped elastomeric mounting |
| EP0101072A1 (en) * | 1982-08-17 | 1984-02-22 | Firma Carl Freudenberg | Rubber support with hydraulic damping |
| GB2129910A (en) * | 1982-09-09 | 1984-05-23 | Continental Gummi Werke Ag | Hydraulically damped elastomeric mounting |
| FR2533506A1 (en) * | 1982-09-28 | 1984-03-30 | Ouest Cie | ANTI-VIBRATION ELASTIC SUPPORT |
| EP0105794A1 (en) * | 1982-09-28 | 1984-04-18 | Compagnie Des Produits Industriels De L'ouest (C.P.I.O.) | Elastic antivibration mount |
| FR2537233A2 (en) * | 1982-10-28 | 1984-06-08 | Continental Gummi Werke Ag | HYDRAULICALLY DAMPED ELASTIC SUPPORT |
| EP0133122A1 (en) * | 1983-07-21 | 1985-02-13 | Hutchinson | Vibration-damping device |
| GB2150257A (en) * | 1983-11-25 | 1985-06-26 | Imp Clevite Inc | Spring strut with elastomeric particles |
| US4560150A (en) * | 1983-11-25 | 1985-12-24 | Imperial Clevite Inc. | Dry viscous spring strut |
| EP0187459A3 (en) * | 1984-12-24 | 1987-11-11 | Ford Motor Company Limited | Assembly for mounting a vibrating body |
| EP0187459A2 (en) * | 1984-12-24 | 1986-07-16 | Ford Motor Company Limited | Assembly for mounting a vibrating body |
| EP0240028A3 (en) * | 1986-04-04 | 1989-02-22 | Adolf Fahnle Gmbh & Co. Kg | Combined air and rubber spring |
| EP0240028A2 (en) * | 1986-04-04 | 1987-10-07 | Adolf Fähnle GmbH & Co. KG | Device for spring mounted support of machines on floor |
| US4856764A (en) * | 1986-06-30 | 1989-08-15 | Tokai Rubber Industries, Ltd. | Fluid-filled resilient bushing having damping means within fluid chambers |
| FR2600736A1 (en) * | 1986-06-30 | 1987-12-31 | Tokai Rubber Ind Ltd | ELASTIC SLEEVE WITH FLUID FILLING COMPRISING DAMPING MEANS IN THE FLUID CHAMBERS. |
| FR2600738A1 (en) * | 1986-06-30 | 1987-12-31 | Tokai Rubber Ind Ltd | ELASTIC FLUID-FILLING SLEEVE WITH DAMPING MEANS IN FLUID CHAMBERS. |
| US4871151A (en) * | 1986-06-30 | 1989-10-03 | Tokai Rubber Industries, Ltd. | Fluid-filled resilient bushing |
| GB2195166A (en) * | 1986-09-19 | 1988-03-30 | Dunlop Ltd | Elastomeric mounting |
| GB2195166B (en) * | 1986-09-19 | 1990-06-06 | Dunlop Ltd | Elastomeric mounting |
| EP0410896A1 (en) * | 1989-07-28 | 1991-01-30 | Paulstra Gmbh | Improvements on hydraulic vibration dampers |
| FR2650355A1 (en) * | 1989-07-28 | 1991-02-01 | Paulstra Gmbh | IMPROVEMENTS ON VIBRATION DAMPING DEVICES |
| US6131894A (en) * | 1998-08-10 | 2000-10-17 | Yamashita Rubber Kabushiki Kaisha | Liquid sealed type rubber mount device |
| US6311963B1 (en) | 1998-12-22 | 2001-11-06 | Tokai Rubber Industries, Ltd. | Fluid-filled vibration damping device |
| US6267362B1 (en) | 1999-02-10 | 2001-07-31 | Yamashita Rubber Kabushiki Kaisha | Liquid sealed type elastic mount |
Also Published As
| Publication number | Publication date |
|---|---|
| IT7923967A0 (en) | 1979-06-29 |
| DE3023544A1 (en) | 1981-01-22 |
| JPS6223178B2 (en) | 1987-05-21 |
| ES492728A0 (en) | 1980-12-16 |
| DE3023544C2 (en) | 1990-07-12 |
| ES8101739A1 (en) | 1980-12-16 |
| IT1165137B (en) | 1987-04-22 |
| FR2461165A1 (en) | 1981-01-30 |
| GB2055172B (en) | 1983-07-06 |
| JPS566934A (en) | 1981-01-24 |
| FR2461165B1 (en) | 1986-03-21 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19950605 |