Patent US4638981A successfully refreshed from Google Patents.
US4638981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine mount
Assignee: Carl Freudenberg KG
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Filing: 1985-10-17
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Granted: 1987-01-27
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Expires: 2005-10-17
Abstract
Abstract A hydraulically damped engine mount comprising a working space bounded by a mounting bracket, a supporting spring and a partition wall, and an equalizing space bounded by the partition wall and by a resilient buffer wall, which are interconnected through a throttle opening and are filled with a liquid, as well as a gas-filled chamber which is disposed within the partition wall and is closed relative to the working space by means of a circular disk suspended from an elastic annular diaphragm thereof, the disk being a chain vibrator which comprises at least two successive, radially interposed neutralizing masses that are elastically secured to each other and to the partition wall by means of annular diaphragms.
Inventors
- 👤 Giacomo Sciortino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:57
CPC Classifications
F; F16; F16F; F16F13/00; F16F13/04; F16F13/06; F16F13/20; F16F13/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
113 words
A hydraulically damped engine mount comprising: a mounting bracket; a supporting spring and a partition wall bounding a working space; a resilient buffer wall, the resilient buffer wall and the partition wall bounding an equalizing space, the working space and the equalizing space being interconnected through a throttle opening; a liquid filling the working space and the equalizing space; a gas-filled chamber which is disposed within the partition wall; and a disk suspended from the partition wall and closing the chamber, said disk being a chain vibrator comprising at least two successive, radially interposed neutralizing masses and annular diaphragms for elastically securing said neutralizing masses to each other and to the partition wall.
Claim 2
Dependent Claim
113 words
A hydraulically damped engine mount comprising: a mounting bracket; a supporting spring and a partition wall bounding a working space; a resilient buffer wall, the resilient buffer wall and the partition wall bounding an equalizing space, the working space and the equalizing space being interconnected through a throttle opening; a liquid filling the working space and the equalizing space; a gas-filled chamber which is disposed within the partition wall; and a disk suspended from the partition wall and closing the chamber, said disk being a chain vibrator comprising at least two successive, radially interposed neutralizing masses and annular diaphragms for elastically securing said neutralizing masses to each other and to the partition wall.
Claim 3
Dependent Claim
22 words
An engine mount according to claim 1, in which the neutralizing masses have a combined weight of from 10 to 200 grams.
Claim 4
Dependent Claim
62 words
An engine mount according to claim 2, in which the radially interposed annular diaphragms are each provided with two axial annular projections which have a mirror-image relationship with each other, and in which there are associated with and spaced from the radial boundary surfaces of said annular projections abutments which have a mirror-image relationship with each other and with said annular projections.
Claim 5
Dependent Claim
15 words
An engine mount according to claim 1, in which said disk is a circular disk.
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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) | 1990-01-26 | 1990-07-28 | 1991-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-01-26 | 1994-07-28 | 1995-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-01-26 | 1998-07-28 | 1999-01-27 | $7700.00 | Window Closed / Lapsed |