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Patent US4387971A successfully refreshed from Google Patents.
US4387971A
Expired / Lapsed
US
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Dynamic damping system
Assignee: United States Department of the Air Force
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Filing: 1980-09-30
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Granted: 1983-06-14
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Expires: 2000-09-30
Abstract
Abstract A dynamic damping system for stabilizing the motion of a large object with respect to inertial space by adding mechanical damping to an angular positioning servo system for the object. The mechanical damping is achieved by a dynamic damper assembly which attaches to an inertial balancer that provides inertia feedback to the servo system. The dynamic damper assembly along with the inertia balancer mechanically assist the positioning servo system.
Inventors
- 👤 Charles F. Grove
- 👤 David A. Rodriguez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 22:19
CPC Classifications
G; G02; G02B; G02B27/00; G02B27/64; G02B7/00; G02B7/18; G02B7/182; G02B7/1821
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
183 words
A dynamic damping system for stabilizing the motion of an object with respect to inertial space, comprising: means for supporting said object for rotation about an axis; means operably attached to said object for rotating said object in either of two directions about said axis to a predetermined position; and means operably attached to said object for substantially maintaining said object in said predetermined position, wherein said means for substantially maintaining said object in said predetermined position includes a rotatable inertia balancer, said inertia balancer being supported by a first rod positioned within said object support means, said first rod lying along an axis parallel to said object axis, means operably attached to said object for interconnecting said object to said inertia balancer, a rotatable damper mass, said damper mass being supported by a second rod positioned within said object support means, said second rod lying along said inertia balancer axis, means interconnecting said first rod and said second rod for permitting said damper mass to aid in substantially eliminating undesirable movement of said object thereby maintaining said object in said predetermined position.
Claim 2
Dependent Claim
183 words
A dynamic damping system for stabilizing the motion of an object with respect to inertial space, comprising: means for supporting said object for rotation about an axis; means operably attached to said object for rotating said object in either of two directions about said axis to a predetermined position; and means operably attached to said object for substantially maintaining said object in said predetermined position, wherein said means for substantially maintaining said object in said predetermined position includes a rotatable inertia balancer, said inertia balancer being supported by a first rod positioned within said object support means, said first rod lying along an axis parallel to said object axis, means operably attached to said object for interconnecting said object to said inertia balancer, a rotatable damper mass, said damper mass being supported by a second rod positioned within said object support means, said second rod lying along said inertia balancer axis, means interconnecting said first rod and said second rod for permitting said damper mass to aid in substantially eliminating undesirable movement of said object thereby maintaining said object in said predetermined position.
Claim 3
Dependent Claim
38 words
A dynamic damping system as defined in claim 1 wherein said means for interconnecting said first rod to said second rod comprises a spring interconnecting an end of said first rod with an end of said second rod.
Claim 4
Dependent Claim
34 words
A dynamic damping system as defined in claim 2 wherein said means for interconnecting said first rod to said second rod further comprises a damping medium interconnecting said inertia balancer and said damper mass.
Claim 5
Dependent Claim
38 words
A dynamic damping system as defined in claim 1 wherein said means for interconnecting said object to said inertia balancer comprises means operably connected to said object for transferring the rotation of said object to said inertia balancer.
Claim 6
Dependent Claim
53 words
A dynamic damping system as defined in claim 4 wherein said object rotation transferring means comprises a pulley and a pair of bands, said bands being connected between said pulley and said inertia balancer in order to rotate said inertia balancer in a direction opposite to the direction of rotation of said object.
Claim 7
Dependent Claim
38 words
A dynamic damping system as defined in claim 5 wherein said means for interconnecting said first rod to said second rod comprises a spring interconnecting an end of said first rod with an end of said second rod.
Claim 8
Dependent Claim
34 words
A dynamic damping system as defined in claim 6 wherein said means for interconnecting said first rod to said second rod further comprises a damping medium interconnecting said inertia balancer and said damper mass.
Claim 9
Dependent Claim
21 words
A dynamic damping system as defined in claim 7 wherein said damping medium is in the form of a dash pot.
Claim 10
Dependent Claim
21 words
A dynamic damping system as defined in claim 7 wherein said damping medium is in the form of an elastomeric material.
Claim 11
Dependent Claim
20 words
A dynamic damping system as defined in claim 7 wherein said object is in the form of a large mirror.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-06-13 | 1986-12-13 | 1987-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-06-13 | 1990-12-13 | 1991-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-06-13 | 1994-12-13 | 1995-06-14 | $7700.00 | Window Closed / Lapsed |