US4666016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power unit mounting device
Assignee: Nissan Motor Co Ltd
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Filing: 1985-03-12
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Granted: 1987-05-19
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Expires: 2005-03-12
Abstract
Abstract An improved power unit mounting device capable of dumping in a wide range of frequency of vibration. The device having an inner liquid chamber comprises an auxiliary chamber provided on a chassis separately from the mounting device proper. The mounting device proper is formed with the inner chamber communicating with the auxiliary chamber through a plurality of fluid channels.
Inventors
- 👤 Eiichi Abe
- 👤 Shin Takehara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:24
CPC Classifications
B; B60; B60K; B60K5/00; B60K5/12; B60K5/1283; F; F16; F16F; F16F13/00; F16F13/04; F16F13/06; F16F13/08; F16F13/26
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
169 words
A power unit mounting device comprising: a power unit side base plate; a chassis side base plate; a mounting rubber provided between and secured to both the plates to elastically connect the plates with each other, and being formed with an internal space confined by both base plates and the mounting rubber: an auxiliary chamber fixed to the chassis of a vehicle, said internal space and said auxiliary chamber being filled with a fluid; a plurality of fluid channels communicating the internal space to the inside of the auxiliary chamber, the fluid masses in the channels being different from each other; and a selector valve for selectively opening and closing the fluid channels; said plurality of fluid channels consisting of a main channel communicating with the internal space at one end, and a plurality of auxiliary channels connected to the main channel through the selector valve at the other end of the main channel, each auxiliary channel communicating with the auxiliary chamber to establish one of the fluid channels.
Claim 2
Dependent Claim
169 words
A power unit mounting device comprising: a power unit side base plate; a chassis side base plate; a mounting rubber provided between and secured to both the plates to elastically connect the plates with each other, and being formed with an internal space confined by both base plates and the mounting rubber: an auxiliary chamber fixed to the chassis of a vehicle, said internal space and said auxiliary chamber being filled with a fluid; a plurality of fluid channels communicating the internal space to the inside of the auxiliary chamber, the fluid masses in the channels being different from each other; and a selector valve for selectively opening and closing the fluid channels; said plurality of fluid channels consisting of a main channel communicating with the internal space at one end, and a plurality of auxiliary channels connected to the main channel through the selector valve at the other end of the main channel, each auxiliary channel communicating with the auxiliary chamber to establish one of the fluid channels.
Claim 3
Dependent Claim
22 words
A power unit mounting device of claim 1, wherein, said fluid channels are constituted by a combination of a plurality of pipes.
Claim 4
Dependent Claim
19 words
A power unit mounting device of claim 1, wherein said auxiliary channels are different from each other in length.
Claim 5
Dependent Claim
19 words
A power unit mounting device of claim 1, wherein, said auxiliary channels are different from each other in diameter.
Claim 6
Dependent Claim
25 words
A power unit mounting device of claim 1, wherein, the resonance frequencies of the fluid masses inside the fluid channels are different from each other.
Claim 7
Dependent Claim
14 words
A power unit mounting device of claim 1, wherein, said fluid is gaseous substance.
Claim 8
Dependent Claim
13 words
A power unit mounting device of claim 6, wherein, said fluid is air.
Claim 9
Dependent Claim
13 words
A power unit mounting device of claim 1, wherein, said fluid is liquid.
Claim 10
Dependent Claim
17 words
A power unit mounting device of claim 8, wherein, said auxiliary chamber is provided with a diaphragm.
Claim 11
Dependent Claim
39 words
A power unit mounting device of claim 6, wherein, said auxiliary chamber is provided with a fluid chamber communicating with the internal space through the fluid channel and an air chamber partitioned by the diaphragm from the fluid chamber.
Claim 12
Dependent Claim
16 words
A power unit mounting device of claim 6, wherein, said selector valve is a solenoid valve.
References Cited (Backward Citations)
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Cited
US4265136A
Cited
JPS5682633A
Cited
JPS5777223A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |