Patent US4418895A successfully refreshed from Google Patents.
US4418895A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic supports, notably for vehicle engine suspension
Assignee: Hutchinson Mapa SA
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Filing: 1981-09-28
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Granted: 1983-12-06
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Expires: 2001-09-28
Abstract
Abstract The invention relates to damped elastic supports, comprising essentially, between two bases fixable to assemblies to be supported on one another, on the one hand a flexible wall defining one chamber designed to cooperate with another chamber and, on the other hand, at least one fluid-flow restricting orifice. This assembly is also completed outwardly by two elastic domes of elastomer combined with one mass. The assembly of this mass with another mass and with the damper device and the elastic membranes is calculated so as to permit a certain flexibility to be maintained, both for low frequencies and high frequencies. The invention is particularly applicable to automobile engine supports.
Inventors
- 👤 Jacques Bertin
- 👤 Michel Pompei
- 👤 Jean-Pierre Valjent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:38
CPC Classifications
F; F16; F16F; F16F13/00; F16F13/04; F16F13/06; F16F13/22
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
243 words
A damped elastic support, for insertion between two bases to be supported on one another, comprising: a damper device formed by first and second chambers connected by a restriction means for providing restricted flow therebetween, one of said first and second chambers comprising a rigid member affixed to one of said bases, a first spring means formed at least partially of elastomer, and being arranged in a path in series with the damper device between said bases so as to form a damper device-first spring means assembly, a second spring means arranged between said bases in a path in parallel with the path containing the damper device and first spring means, said second spring means comprising an annular shaped elastomer member which totally surrounds the assembly formed by said damper device and said first spring means and defining with said assembly, between said bases, a third chamber which is independent of said first and second chambers, at least one of the first and second chambers being bounded by a flexible wall having a shape of revolution such that deformation of said flexible wall, due to deformation of the said first and second spring means, causes a damper fluid to flow between the first and second chambers through the restriction means, said flexible wall being directly joined to the abovementioned rigid member and to a further rigid member and said first spring means joining said further rigid member to the other of said bases.
Claim 2
Dependent Claim
243 words
A damped elastic support, for insertion between two bases to be supported on one another, comprising: a damper device formed by first and second chambers connected by a restriction means for providing restricted flow therebetween, one of said first and second chambers comprising a rigid member affixed to one of said bases, a first spring means formed at least partially of elastomer, and being arranged in a path in series with the damper device between said bases so as to form a damper device-first spring means assembly, a second spring means arranged between said bases in a path in parallel with the path containing the damper device and first spring means, said second spring means comprising an annular shaped elastomer member which totally surrounds the assembly formed by said damper device and said first spring means and defining with said assembly, between said bases, a third chamber which is independent of said first and second chambers, at least one of the first and second chambers being bounded by a flexible wall having a shape of revolution such that deformation of said flexible wall, due to deformation of the said first and second spring means, causes a damper fluid to flow between the first and second chambers through the restriction means, said flexible wall being directly joined to the abovementioned rigid member and to a further rigid member and said first spring means joining said further rigid member to the other of said bases.
Claim 3
Dependent Claim
60 words
An elastic support according to claim 1, wherein the chamber enclosed by said flexible wall is located at the center of the support such that the mutual approach or separation of the two bases, under the effect of an oscillation, causes the variation of the volume of said chamber and forces the damper fluid to flow through the restriction means.
Claim 4
Dependent Claim
15 words
An elastic support according to claim 1, wherein said flexible wall is of conical shape.
Claim 5
Dependent Claim
57 words
An elastic support according to claim 1, wherein said flexible wall includes a reinforcement means tending to oppose radial deformation and thus encouraging, when the two bases approach one another, the reduction in volume of the said enclosed chamber and tending to expel the liquid to the other chamber, and inversely when the two bases mutually separate.
Claim 6
Dependent Claim
23 words
An elastic support according to claim 1, wherein at least one of the said paths includes a mass designed to modify the impedance.
Claim 7
Dependent Claim
34 words
An elastic support according to claim 1, wherein the second spring means comprises an elastomer member which, viewed in section is outwardly dome-shaped, and which is made up of at least one elastomer element.
Claim 8
Dependent Claim
26 words
An elastic support according to claim 6, including an annular shaped mass connected to and surrounding the dome-shaped member at the outer portion of said dome.
Claim 9
Dependent Claim
27 words
An elastic support according to claim 6 or claim 7, wherein the dome-shaped member is located outwardly from the flexible wall and forms therewith a deformable chamber.
Claim 10
Dependent Claim
51 words
An elastic support according to claim 8, wherein the deformable chamber is completely closed, so that when the two bases of the support approach one another, compression is generated in this chamber which tends to resist outward movement of the flexible wall and encourage inward movement thereof when the bases separate.
Claim 11
Dependent Claim
16 words
An elastic support according to claim 8, wherein the deformable chamber is opened to the atmosphere.
Claim 12
Dependent Claim
22 words
An elastic support according to claim 10, wherein the flexible wall includes reinforcement means so as to limit the outward movement thereof.
Claim 13
Dependent Claim
62 words
An elastic support according to claim 1, including an inertia mass in each of said paths, the assembly of these masses, spring means and the damper device being calculated so as to provide two dynamic dampers capable of being adjusted to different frequencies and the inertia mass of the path containing said first spring means being constituted by said further rigid member.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-12-05 | 1987-06-06 | 1987-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-12-05 | 1991-06-06 | 1991-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-12-05 | 1995-06-06 | 1995-12-06 | $7700.00 | Window Closed / Lapsed |