US5628499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Counter vibration generating power unit mounting device
Assignee: Mazda Motor Corp
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Filing: 1994-01-25
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Granted: 1997-05-13
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Expires: 2014-01-25
Abstract
Abstract An active type of mounting device for mounting a power unit to a vehicle body includes a vibratory member which generates vibrations so as to damp external vibrations applied to the mounting device from the power unit. The resonance frequency of the vibratory member is regulated by varying of the supporting stiffness or flexibility of the vibratory member or by varying of a variable mass attached to the vibratory member to obtain a specific frequency within a frequency band of external vibrations according to engine speed and/or vehicle speed.
Inventors
- 👤 Naoki Ikeda
- 👤 Shin Takehara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:41
CPC Classifications
F; F16; F16F; F16F13/00; F16F13/04; F16F13/26; F16F13/264; F16F15/00; F16F15/02; G; G05; G05D; G05D19/00; G05D19/02
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
113 words
A power unit mounting device for mounting a power unit to a vehicle body and canceling vibrations applied thereto from the power unit, comprising: vibratory means, flexibly supported by a portion of said power unit mounting device, for generating vibrations in the power unit mounting device; exciting means for causing said vibratory means to generate said vibrations in the power unit mounting device so as to reduce vibrations transmitted to said power unit mounting device from said power unit; and frequency regulating means for adjusting a natural resonance frequency of said vibratory means to a predetermined frequency within a frequency band of vibrations which may be transmitted to the power unit mounting device.
Claim 2
Dependent Claim
113 words
A power unit mounting device for mounting a power unit to a vehicle body and canceling vibrations applied thereto from the power unit, comprising: vibratory means, flexibly supported by a portion of said power unit mounting device, for generating vibrations in the power unit mounting device; exciting means for causing said vibratory means to generate said vibrations in the power unit mounting device so as to reduce vibrations transmitted to said power unit mounting device from said power unit; and frequency regulating means for adjusting a natural resonance frequency of said vibratory means to a predetermined frequency within a frequency band of vibrations which may be transmitted to the power unit mounting device.
Claim 3
Dependent Claim
39 words
A power unit mounting device as defined in claim 1, wherein said frequency regulating means sets the natural resonance frequency of said vibratory means to a frequency of a vibration having the largest amplitude generated by the power unit.
Claim 4
Dependent Claim
30 words
A power unit mounting device as defined in claim 1, wherein said frequency regulating means includes resonance frequency regulating means for changing the natural resonance frequency of said vibratory means.
Claim 5
Dependent Claim
24 words
A power unit mounting device as defined in claim 3, wherein said resonance frequency regulating means changes a supporting flexibility of said vibratory means.
Claim 6
Dependent Claim
36 words
A power unit mounting device as defined in claim 3, wherein said resonance frequency regulating means includes a variable mass fixed to said vibratory means and changes the natural resonance frequency by changing said variable mass.
Claim 7
Dependent Claim
27 words
A power unit mounting device as defined in claim 3, and further comprising control means for simultaneously controlling said exciting means and said resonance frequency regulating means.
Claim 8
Dependent Claim
40 words
A power unit mounting device as defined in claim 6, wherein said control means detects an engine speed and causes said frequency regulating means to change said natural resonance frequency of said vibratory means in accordance with said engine speed.
Claim 9
Dependent Claim
40 words
A power unit mounting device as defined in claim 6, wherein said control means detects a vehicle speed and causes said frequency regulating means to change said natural resonance frequency of said vibratory means in accordance with said vehicle speed.
Claim 10
Dependent Claim
27 words
A power unit mounting device as defined in claim 3, and further comprising control means for selectively controlling said exciting means and said resonance frequency regulating means.
Claim 11
Dependent Claim
55 words
A power unit mounting device as defined in claim 9, wherein said control means detects an engine speed, actuates said exciting means when detecting that said engine speed within a predetermined high engine speed range, and actuates said resonance frequency regulating means when detecting that said engine speed within a predetermined low engine speed range.
Claim 12
Dependent Claim
57 words
A power unit mounting device as defined in claim 9, wherein said control means detects a vehicle speed, actuates said exciting means when detecting that said vehicle speed is within a predetermined high vehicle speed range, and actuates said resonance frequency changing means when detecting that said vehicle speed is within a predetermined low vehicle speed range.
Claim 13
Dependent Claim
91 words
A power unit mounting device for mounting a power unit to a vehicle body and canceling vibrations applied thereto from the power unit comprising: vibratory means, flexibly supported by a portion of said power unit mounting device, for generating vibrations in the power unit mounting device; and frequency regulating means for adjusting a natural resonance frequency of said vibratory means to a predetermined frequency within a frequency band of vibrations transmitted to the mounting device so as to reduce vibrations transmitted to said power unit mounting device from said power unit.
Claim 14
Dependent Claim
91 words
A power unit mounting device for mounting a power unit to a vehicle body and canceling vibrations applied thereto from the power unit comprising: vibratory means, flexibly supported by a portion of said power unit mounting device, for generating vibrations in the power unit mounting device; and frequency regulating means for adjusting a natural resonance frequency of said vibratory means to a predetermined frequency within a frequency band of vibrations transmitted to the mounting device so as to reduce vibrations transmitted to said power unit mounting device from said power unit.
Claim 15
Dependent Claim
39 words
A power unit mounting device as defined in claim 12, wherein said frequency regulating means sets the natural resonance frequency of said vibratory means to a frequency of a vibration having the largest amplitude generated by said power unit.
Claim 16
Dependent Claim
30 words
A power unit mounting device as defined in claim 12, wherein said frequency regulating means includes natural frequency changing means for changing the natural resonance frequency of said vibratory means.
Claim 17
Dependent Claim
24 words
A power unit mounting device as defined in claim 14, wherein said natural frequency changing means changes a supporting flexibility of said vibratory means.
Claim 18
Dependent Claim
36 words
A power unit mounting device as defined in claim 14, wherein said natural frequency changing means includes a variable mass fixed to said vibratory means and changes the natural resonance frequency by changing said variable mass.
Claim 19
Dependent Claim
42 words
A power unit mounting device as defined in claim 14, and further comprising control means for detecting an engine speed and causing said frequency regulating means to change said natural resonance frequency of said vibratory means in accordance with said engine speed.
Claim 20
Dependent Claim
42 words
A power unit mounting device as defined in claim 14, and further comprising control means for detecting a vehicle speed and causing said frequency regulating means to change said natural resonance frequency of said vibratory means in accordance with said vehicle speed.
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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) | 2000-05-12 | 2000-11-11 | 2001-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-05-12 | 2004-11-11 | 2005-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-05-12 | 2008-11-11 | 2009-05-13 | $7700.00 | Window Closed / Lapsed |