US4757982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine mount with hydraulic damping
Assignee: Metzeler Automotive Profiles GmbH
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Filing: 1985-11-29
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Granted: 1988-07-19
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Expires: 2005-11-29
Abstract
Abstract An engine mount with hydraulic damping, includes at least one fluid-filled working chamber having a substantially conical shell-shaped rubber-elastic peripheral wall serving as a support spring, a support ring being connected to the peripheral wall and having an upper surface, a thrust element with adjustable radial stiffness in the form of a holding plate vulcanized to the upper surface of the support ring and closing the working chamber along with the support ring, the holding plate having a central cylindrical portion projecting freely into the working chamber and having an inner surface, a bell-shaped expanded ring projecting from the inner surface on the cylindrical portion toward the peripheral wall and having a free end, and a rubber-elastic membrane closing the free end of the expanded ring enclosing a volume of air.
Inventors
- 👤 Rainer Andra
- 👤 Manfred Hofmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:48
CPC Classifications
F; F16; F16F; F16F13/00; F16F13/04; F16F13/06; F16F13/08; F16F13/10; F16F13/20; F16F13/22
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
175 words
Engine mount with hydraulic damping, comprising a working chamber, a compensating chamber, an intermediate plate being disposed between said chambers and having a channel formed therein interconnecting said chambers, hydraulic fluid filling said chambers, rubber-elastic peripheral walls surrounding said chambers, one of said peripheral walls serving as a support spring and being substantially conical defining an open end of one of said chambers, a support ring at said open end of said one chamber, said support ring having an open recess formed therein with a given diameter, a thrust element vulcanized to said support ring, said thrust element including a cylindrical mounting plate having a cylindrical portion with a diameter smaller than said given diameter projecting into said recess and into said one chamber, said cylindrical portion having an inner surface, a bell-shaped ring fastened to and extending radially outwardly from said inner surface of said cylindrical portion defining a cross section inside said bell-shaped ring, and a rubber membrane disposed inside said bell-shaped ring covering said cross section and enclosing an air-filled membrane chamber.
Claim 2
Dependent Claim
175 words
Engine mount with hydraulic damping, comprising a working chamber, a compensating chamber, an intermediate plate being disposed between said chambers and having a channel formed therein interconnecting said chambers, hydraulic fluid filling said chambers, rubber-elastic peripheral walls surrounding said chambers, one of said peripheral walls serving as a support spring and being substantially conical defining an open end of one of said chambers, a support ring at said open end of said one chamber, said support ring having an open recess formed therein with a given diameter, a thrust element vulcanized to said support ring, said thrust element including a cylindrical mounting plate having a cylindrical portion with a diameter smaller than said given diameter projecting into said recess and into said one chamber, said cylindrical portion having an inner surface, a bell-shaped ring fastened to and extending radially outwardly from said inner surface of said cylindrical portion defining a cross section inside said bell-shaped ring, and a rubber membrane disposed inside said bell-shaped ring covering said cross section and enclosing an air-filled membrane chamber.
Claim 3
Dependent Claim
25 words
Engine mount according to claim 1, wherein said bell-shaped ring has an outer surface substantially parallel to the inner contour of said one peripheral wall.
Claim 4
Dependent Claim
65 words
Engine mount according to claim 1, wherein said bell-shaped ring is retained by said membrane at a retaining location, said ring has a toric recess formed therein in the vicinity of said retaining location, and said membrane having a thickened rubber layer in the vicinity of said retaining location forming a stop striking said intermediate plate when said membrane moves in a given pressure direction.
Claim 5
Dependent Claim
50 words
Engine mount according to claim 1, wherein said expanded bell-shaped ring has an outer rim, and said one peripheral wall has a metallic ring vulcanized therein in the vicinity of said rim extending through the entire thickness of said one peripheral wall and serving as a stop for tension loads.
Claim 6
Dependent Claim
28 words
Engine mount according to claim 4, including another ring at least partially enclosing the engine mount having a pulled-in rim covering the outer surface of said metallic ring.
Claim 7
Dependent Claim
16 words
Engine mount according to claim 1, including a circular disc-shaped quenching mass enclosed by said membrane.
References Cited (Backward Citations)
US2610017A
Cited
US2610016A
Cited
FR1047112A
Cited
US2655005A
Cited
DE2652501A1
Cited
US4199128A
Cited
US4469316A
Cited
JPS5666539A
Cited
US4342446A
Cited
JPS57161331A
Cited
DE3142673A1
Cited
DE3207889A1
Cited
FR2524951A1
Cited
JPS58196341A
Cited
GB2122718A
Cited
US4643405A
Cited
DE3245653A1
Cited
EP0115417A2
Cited
US4632370A
Cited
DE3336204A1
Cited
DE3347273A1
Cited
DE3505632A1
Cited
EP0183267A2
Cited
US4650168A
Cited
EP0191703A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-07-19 | 1992-01-18 | 1992-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-19 | 1996-01-18 | 1996-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-19 | 2000-01-18 | 2000-07-19 | $7700.00 | Window Closed / Lapsed |