US4418897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-chamber motor mount with hydraulic damping
Assignee: Metzeler Kautschuk GmbH
•
Filing: 1981-03-17
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Granted: 1983-12-06
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Expires: 2001-03-17
Abstract
Abstract Two-chamber motor mount with hydraulic damping, especially for vehicles, including an upper and lower chamber having rubber-elastic walls and being filled with liquid, the upper chamber being of hollow conical construction, a holding flange disposed between the walls of the upper and lower chambers, an intermediate plate formed with a throttle orifice located in vicinity of the holding flange, the upper and the lower chambers being connected to one another through the intermediate plate with the throttle orifice for preventing an hydraulic response for high frequency vibrations of small amplitude, the intermediate plate being responsive to high frequency vibrations of small amplitude and the throttle orifice being automatically closeable at high pressures.
Inventors
- 👤 Volker Hartel
- 👤 Manfred Hofmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:48
CPC Classifications
F; F16; F16F; F16F13/00; F16F13/04; F16F13/06; F16F13/22; F16F13/08; F16F13/10; F16F13/105
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
146 words
Two-chamber motor mount with hydraulic damping, especially for motor vehicles, comprising an upper and a lower chamber having rubber-elastic walls and being filled with liquid, said upper chamber being of hollow conical construction, a holding flange disposed between said walls of said upper and lower chambers, an intermediate plate with a throttle orifice located in vicinity of and sealingly secured at the outer edge thereof to said holding flange, said throttle orifice being defined by a tube-shaped rubber insert extending substantially perpendicularly through said intermediate plate and having a substantially oval inner cross section said upper and said lower chambers being connected to one another through said intermediate plate solely via said throttle orifice for preventing an hydraulic response for high frequency vibrations of small amplitude, said intermediate plate being responsive to high frequency vibrations of small amplitude for closing said throttle orifice at high pressures.
Claim 2
Dependent Claim
146 words
Two-chamber motor mount with hydraulic damping, especially for motor vehicles, comprising an upper and a lower chamber having rubber-elastic walls and being filled with liquid, said upper chamber being of hollow conical construction, a holding flange disposed between said walls of said upper and lower chambers, an intermediate plate with a throttle orifice located in vicinity of and sealingly secured at the outer edge thereof to said holding flange, said throttle orifice being defined by a tube-shaped rubber insert extending substantially perpendicularly through said intermediate plate and having a substantially oval inner cross section said upper and said lower chambers being connected to one another through said intermediate plate solely via said throttle orifice for preventing an hydraulic response for high frequency vibrations of small amplitude, said intermediate plate being responsive to high frequency vibrations of small amplitude for closing said throttle orifice at high pressures.
Claim 3
Dependent Claim
42 words
Two-chamber motor mount according to claim 1 wherein said tube-shaped rubber insert is automatically compressible by a chamber pressure of at least approximately 2 bar and of maximally from 3 to 4 bar so as to close the flow-through cross section thereof.
Claim 4
Dependent Claim
16 words
Two-chamber motor mount according to claim 1 wherein said lower chamber is of substantially hemispherical construction.
Claim 5
Dependent Claim
95 words
Two-chamber motor mount according to claim 1 wherein said holding flange is of bipartite construction having an upper flange part whereon said hollow conical chamber wall of rubber-elastic material is seated, a face plate with a threaded bolt extending therefrom being disposed at the upper end face of said hollow conical chamber wall, said rubber-elastic wall of said lower chamber being in engagement with the lower flange part of said bipartite holding flange, said bipartite holding flange being formed with an inner peripheral groove wherein said intermediate plate formed with said throttle orifice is supported.
Claim 6
Dependent Claim
59 words
Two-chamber motor mount according to claim 4 including an additional, markedly progressive and low damping rubber bearing mounted on a support plate and supporting two heretofore defined features of the two-chamber motor mount, said heretofore defined features having a mass acting as intermediate mass of a series connection of the hydraulically damped heretofore defined features and said rubber bearing.
Claim 7
Dependent Claim
17 words
Two-chamber motor mount according to claim 1 wherein said intermediate plate is formed of elastically bendable material.
Claim 8
Dependent Claim
17 words
Two-chamber motor mount according to claim 1 wherein said intermediate plate is supported so as to vibrate.
Claim 9
Dependent Claim
25 words
Two-chamber motor mount according to claim 7, including two soft rubber bearings having markedly progressive characteristic curves forming the vibrational support for said intermediate plate.
References Cited (Backward Citations)
DE1805392A1
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US3658314A
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US3837363A
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DE2503581A1
Cited
US4159091A
Cited
US4054312A
Cited
DE2718121A1
Cited
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 |