US4687171A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mount
Assignee: Carl Freudenberg KG
•
Filing: 1985-01-02
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Granted: 1987-08-18
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Expires: 2005-01-02
Abstract
Abstract A mount for connecting two relative-vibratable objects has two resilient elements and a signal actuated clutch for connecting the objects. The clutch is in parallel with one of the resilient elements and in parallel with the other. A sensor senses the vibrations applied across the mount and actuates the clutch in response thereto to change the transfer function of the mount. Appropriately controlling the engagement/disengagement actuation of the clutch in this way makes it possible to avoid the resonant frequencies of the mount and thus both isolate and damp the vibrations as desired without structural changes to the mount.
Inventors
- 👤 Tillmann Freudenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:33
CPC Classifications
F; F16; F16F; F16F13/00; F16F13/04; F16F13/26
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
91 words
A mount for connecting two relatively-vibratable objects, comprising: two resilient elements and a signal-actuated clutch for connecting two relatively-vibratable objects in the direction of the relative vibrations thereof, the clutch being in parallel with one of the resilient elements and in series with the other; and sensor means responsive to the relative vibrations of the objects at least at a resonant frequency of the mount with a signal for actuating the clutch, thereby to change the transfer function of the mount so as to avoid the resonant frequency of the mount.
Claim 2
Dependent Claim
91 words
A mount for connecting two relatively-vibratable objects, comprising: two resilient elements and a signal-actuated clutch for connecting two relatively-vibratable objects in the direction of the relative vibrations thereof, the clutch being in parallel with one of the resilient elements and in series with the other; and sensor means responsive to the relative vibrations of the objects at least at a resonant frequency of the mount with a signal for actuating the clutch, thereby to change the transfer function of the mount so as to avoid the resonant frequency of the mount.
Claim 3
Dependent Claim
40 words
The mount of claim 1, wherein the clutch and one of the resilient elements are connected in series as a unit for connecting the objects and the other resilient element is in parallel with the unit for connecting the objects.
Claim 4
Dependent Claim
46 words
The mount of claim 1, and further comprising intermediate means connected to the clutch and one of the resilient elements for connecting these to one of the objects in parallel and connected to the other resilient element for connecting it to the other of the objects.
Claim 5
Dependent Claim
77 words
An engine mount for a vehicle, comprising: a pedestal for connection to the engine; a mounting fixture for connection to the vehicle; a first resilient element connected between the pedestal and mounting fixture; a second resilient element and signal-actuated clutch connected in series between the pedestal and mounting fixture; and sensor means responsive to relative vibration between the pedestal and mounting fixture with a corresponding signal for engaging the clutch when the signal exceeds a threshold value.
Claim 6
Dependent Claim
77 words
An engine mount for a vehicle, comprising: a pedestal for connection to the engine; a mounting fixture for connection to the vehicle; a first resilient element connected between the pedestal and mounting fixture; a second resilient element and signal-actuated clutch connected in series between the pedestal and mounting fixture; and sensor means responsive to relative vibration between the pedestal and mounting fixture with a corresponding signal for engaging the clutch when the signal exceeds a threshold value.
Claim 7
Dependent Claim
27 words
The engine mount of claim 4, wherein the maximum holding force of the clutch engagement is less than the maximum spring force of the first resilient element.
Claim 8
Dependent Claim
26 words
The engine mount of claim 4, wherein the spring force of the first resilient element is smaller than the spring force of the second resilient element.
Claim 9
Dependent Claim
30 words
The engine mount of claim 6, wherein the ratio of the spring force of the second resilient element to that of the first is from about 2 to about 4.
Claim 10
Dependent Claim
39 words
The engine mount of claim 4, wherein the clutch comprises interfitting plates, alternate ones of the plates forming the opposite ends of the clutch in the direction of the vibration and magnetic means for variably holding the plates together.
Claim 11
Dependent Claim
20 words
The engine mount of claim 8, wherein the interfitting plates have complementary chevron shapes in the direction of the vibration.
Claim 12
Dependent Claim
23 words
The engine mount of claim 9, wherein the angle of the chevron shape of the plates is from about 5° to about 15°.
Claim 13
Dependent Claim
39 words
The engine mount of claim 4, wherein the clutch comprises a friction column connected to one end of the clutch and magnetically-actuatable clamping surface means connected to the other end of the clutch for clamping about the friction column.
Claim 14
Dependent Claim
32 words
The engine mount of claim 11, wherein the clamping surface means comprises magnetically-actuatable means for producing a fluid pressure and means responsive to the fluid pressure for clamping about the friction column.
Claim 15
Dependent Claim
104 words
An engine mount for a vehicle, comprising: first and second resilient elements and a signal-actuated clutch; a pedestal for connection to the engine; a mounting fixture for connection to the vehicle; intermediate means between the pedestal and mounting fixture for connecting the first resilient element and the clutch in parallel therefrom to one of the pedestal and mounting fixture and for connecting tne second resilient element therefrom to the other of the pedestal and mounting fixture; and sensor means responsive to relative vibration between the pedestal and mounting fixture with a corresponding signal for engaging the clutch when the signal exceeds a threshold value.
Claim 16
Dependent Claim
104 words
An engine mount for a vehicle, comprising: first and second resilient elements and a signal-actuated clutch; a pedestal for connection to the engine; a mounting fixture for connection to the vehicle; intermediate means between the pedestal and mounting fixture for connecting the first resilient element and the clutch in parallel therefrom to one of the pedestal and mounting fixture and for connecting tne second resilient element therefrom to the other of the pedestal and mounting fixture; and sensor means responsive to relative vibration between the pedestal and mounting fixture with a corresponding signal for engaging the clutch when the signal exceeds a threshold value.
Claim 17
Dependent Claim
27 words
The engine mount of claim 13, wherein the maximum holding force of the clutch engagement is less than the maximum spring force of the first resilient element.
Claim 18
Dependent Claim
26 words
The engine mount of claim 13, wherein the spring force of the first resilient element is smaller than the spring force of the second resilient element.
Claim 19
Dependent Claim
30 words
The engine mount of claim 15, wherein the ratio of the spring force of the second resilient element to that of the first is from about 2 to about 4.
Claim 20
Dependent Claim
34 words
The engine mount of claim 13, wherein the clutch comprises interfitting plates forming, alternately, opposite ends of the clutch in the direction of the vibration and magnetic means for variably holding the plates together.
Claim 21
Dependent Claim
20 words
The engine mount of claim 17, wherein the interfitting plates have complementary chevron shapes in the direction of the vibration.
Claim 22
Dependent Claim
23 words
The engine mount of claim 18, wherein the angle of the chevron shape of the plates is from about 5° to about 15°.
Claim 23
Dependent Claim
39 words
The engine mount of claim 13, wherein the clutch comprises a friction column connected to one end of the clutch and magnetically-actuatable clamping surface means connected to the other end of the clutch for clamping about the friction column.
Claim 24
Dependent Claim
32 words
The engine mount of claim 20, wherein the clamping surface means comprises magnetically-actuatable means for producing a fluid pressure and means responsive to the fluid pressure for clamping about the friction column.
References Cited (Backward Citations)
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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) | 1990-08-17 | 1991-02-16 | 1991-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-17 | 1995-02-16 | 1995-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-17 | 1999-02-16 | 1999-08-18 | $7700.00 | Window Closed / Lapsed |