Patent US4787611A successfully refreshed from Google Patents.
US4787611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically damped engine mount having improved throttle ports
Assignee: Carl Freudenberg KG
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Filing: 1987-04-08
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Granted: 1988-11-29
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Expires: 2007-04-08
Abstract
Abstract An engine mount with hydraulic damping has a partition wall located between a working chamber and a compensating chamber and the partition wall is penetrated by a throttle port means. The throttle port means comprises several channel-shaped individual ports of different lengths and/or different cross sections.
Inventors
- 👤 Giacomo Sciortino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:54
CPC Classifications
F; F16; F16F; F16F13/00; F16F13/04; F16F13/06; F16F13/22
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
120 words
An engine mount having hydraulic damping comprising: a bearing member, a bearing wall, and an annular bearing spring connecting said bearing member to said bearing wall, together defining a working chamber; means comprising a resilient buffer wall defining a compensating chamber; a partition wall disposed between said working chamber and said compensating chamber; a plurality of channels arranged in parallel and having different lengths, said channels further having a common inlet connected to said working chamber and a common outlet connected to said compensating chamber, said channels forming throttle port means for connecting said working chamber and said compensating chamber in fluid communication, with said throttle port means, said working chamber, and said compensating chamber filled with an incompressible fluid.
Claim 2
Dependent Claim
120 words
An engine mount having hydraulic damping comprising: a bearing member, a bearing wall, and an annular bearing spring connecting said bearing member to said bearing wall, together defining a working chamber; means comprising a resilient buffer wall defining a compensating chamber; a partition wall disposed between said working chamber and said compensating chamber; a plurality of channels arranged in parallel and having different lengths, said channels further having a common inlet connected to said working chamber and a common outlet connected to said compensating chamber, said channels forming throttle port means for connecting said working chamber and said compensating chamber in fluid communication, with said throttle port means, said working chamber, and said compensating chamber filled with an incompressible fluid.
Claim 3
Dependent Claim
14 words
An engine mount according to claim 1 wherein each channel has a different crosssection.
Claim 4
Dependent Claim
27 words
An engine mount according to claim 1 further comprising a transverse port connecting said channels in fluid communication at a location between both ends of each channel.
Claim 5
Dependent Claim
26 words
An engine according to claim 2 further comprising a transverse port connecting said channels in fluid comunication at a location between both ends of each channel.
Claim 6
Dependent Claim
30 words
An engine mount according to claim 3 wherein the ratio of the cross-section of the transverse port and the cross-section of each of the channels is between 1 and 3.
Claim 7
Dependent Claim
30 words
An engine mount according to claim 4 wherein the ratio of the cross-section of the transverse port and the cross-section of each of the channels is between 1 and 3.
Claim 8
Dependent Claim
36 words
An engine mount according to claim 1 wherein said partition wall has an outer portion rigidly connected to said bearing wall of said engine mount and said throttle port channels are located in said outer portion.
Claim 9
Dependent Claim
36 words
An engine mount according to claim 2 wherein said partition wall has an outer portion rigidly connected to said bearing wall of said engine mount and said throttle port channels are located in said outer portion.
Claim 10
Dependent Claim
36 words
An engine mount according to claim 3 wherein said partition wall has an outer portion rigidly connected to said bearing wall of said engine mount and said throttle port channels are located in said outer portion.
Claim 11
Dependent Claim
36 words
An engine mount according to claim 4 wherein said partition wall has an outer portion rigidly connected to said bearing wall of said engine mount and said throttle port channels are located in said outer portion.
Claim 12
Dependent Claim
36 words
An engine mount according to claim 5 wherein said partition wall has an outer portion rigidly connected to said bearing wall of said engine mount and said throttle port channels are located in said outer portion.
Claim 13
Dependent Claim
36 words
An engine mount according to claim 6 wherein said partition wall has an outer portion rigidly connected to said bearing wall of said engine mount and said throttle port channels are located in said outer portion.
Claim 14
Dependent Claim
17 words
An engine mount according to claim 1 wherein said plurality of channels comprises at least three channels.
Claim 15
Dependent Claim
17 words
An engine mount according to claim 7 wherein said plurality of channels comprises at least three channels
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-11-29 | 1992-05-30 | 1992-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-11-29 | 1996-05-30 | 1996-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-11-29 | 2000-05-30 | 2000-11-29 | $7700.00 | Window Closed / Lapsed |