US4643385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anti-vibration system
Assignee: Intersil Corp
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Filing: 1984-11-15
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Granted: 1987-02-17
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Expires: 2004-11-15
Abstract
Abstract An object to be isolated from vibrations is supported by a structure having a curved surface which contacts the object. The support structure is in turn coupled to a resilient spring-like support frame which allows the structure to move in response to vibrations. Also contacting the support structure are three isolation elements which sense the vibration forces and produce forces to counter the vibrations.
Inventors
- 👤 John R. Sandercock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:34
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/005
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
139 words
A dynamic antivibration system, for reducing the effects of vibrations on an object, comprising: a support structure having a curved surface for supporting the object; means in contact with said support structure for resiliently supporting the support structure, said resilient support means comprising: three fixed supports; and a resilient frame extending from each of the fixed supports, said support structure being supported by said frame; and three means in contact with the support structure at separate contact points from said resilient support means, each of said three means comprising: means for sensing the vibration forces on the support structure at the contact point which provides an electrical output signal representing the degree of sensed vibrations, means for generating forces to counter the vibration forces, and a controller responsive to the sensed vibrations for controlling the means for generating forces.
Claim 2
Dependent Claim
139 words
A dynamic antivibration system, for reducing the effects of vibrations on an object, comprising: a support structure having a curved surface for supporting the object; means in contact with said support structure for resiliently supporting the support structure, said resilient support means comprising: three fixed supports; and a resilient frame extending from each of the fixed supports, said support structure being supported by said frame; and three means in contact with the support structure at separate contact points from said resilient support means, each of said three means comprising: means for sensing the vibration forces on the support structure at the contact point which provides an electrical output signal representing the degree of sensed vibrations, means for generating forces to counter the vibration forces, and a controller responsive to the sensed vibrations for controlling the means for generating forces.
Claim 3
Dependent Claim
18 words
The system as in claim 1 wherein the means for sensing the vibration forces includes a piezoelectric transducer.
Claim 4
Dependent Claim
15 words
The system as in claim 1 wherein the means for generating forces includes a solenoid.
Claim 5
Dependent Claim
21 words
The system as in claim 1 wherein the controller includes means for integrating the output signal of the vibration sensing means.
Claim 6
Dependent Claim
65 words
The system as in claim 1 wherein the controller includes: an amplifier having an input connected to the means for sensing vibration forces, and having a feedback circuit such that the amount of feedback is a function of changes in the sensed vibration forces; and an integrator coupled to the output of the amplifier, the output of the integrator connected to the force generating means.
Claim 7
Dependent Claim
17 words
The system as in claim 5 wherein the feedback circuit of the amplifier includes a second integrator.
Claim 8
Dependent Claim
37 words
The system as in claim 1 wherein the resilient frame comprises metal straps fixed to and extending from the fixed supports to a central point, the support structure being positioned on the straps over the central point.
Claim 9
Independent Claim
79 words
A system for reducing the effects of vibrations on an object, comprising: three fixed supports, each of which is positioned substantially equidistant from the other two supports; a resilent frame extending from the fixed supports; an object support structure supported by the resilent frame and having a curved upper surface; and three vibration isolation elements for producing forces to counter the vibrations, each of said elements being between two different adjacent fixed supports and coupled to the support structure.
Claim 10
Independent Claim
79 words
A system for reducing the effects of vibrations on an object, comprising: three fixed supports, each of which is positioned substantially equidistant from the other two supports; a resilent frame extending from the fixed supports; an object support structure supported by the resilent frame and having a curved upper surface; and three vibration isolation elements for producing forces to counter the vibrations, each of said elements being between two different adjacent fixed supports and coupled to the support structure.
Claim 11
Dependent Claim
38 words
The system as in claim 8 wherein each isolation element comprises: a force sensing transducer; means for generating forces to counter the vibrations; and a controller responsive to the sensed vibrations for controlling the means for generating forces.
Claim 12
Dependent Claim
63 words
The system as in claim 9 wherein the controller includes: an amplifier having an input connected to the force sensing transducer, and having a feedback circuit such that the amount of feedback is a function of changes in the sensed vibration forces; and an integrator coupled to the output of the amplifier, the output of the integrator connected to the force generating means.
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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) | 1990-02-16 | 1990-08-18 | 1991-02-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-16 | 1994-08-18 | 1995-02-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-16 | 1998-08-18 | 1999-02-17 | $7700.00 | Window Closed / Lapsed |