Patent US3968496A successfully refreshed from Google Patents.
US3968496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized antenna platform
Assignee: International Standard Electric Corp
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Filing: 1975-03-04
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Granted: 1976-07-06
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Expires: 1995-03-04
Abstract
Abstract This relates to stabilized platforms for directive ship mounted antennas for satellite communication. The invention further relates to platforms comprising an antenna dish with elevation and azimuth control means, as well as counterweight means, being supported in a universal joint bearing. The main feature of the invention is that the platform includes a small mass system which is mechanically coupled to the platform in a damped manner, thereby stabilizing or damping the movements of the antenna caused by movements (roll/pitch) of the ship.
Inventors
- 👤 Geir Brunvoll
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:05
CPC Classifications
H; H01; H01Q; H01Q1/00; H01Q1/12; H01Q1/18
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
85 words
A stabilized antenna platform wherein there is provided an antenna dish having elevation and azimuth control means, as well as counterweight means, said antenna platform mounted upon an antenna mounting shaft, said antenna mounting shaft supported by a universal joint bearing, comprising: at least one closed container symmetrically arranged around said mounting shaft containing a liquid and provided with internal liquid flow damping means, said closed container forming a small mass system mechanically coupled to said platform for damping the movements of said antenna platform.
Claim 2
Dependent Claim
85 words
A stabilized antenna platform wherein there is provided an antenna dish having elevation and azimuth control means, as well as counterweight means, said antenna platform mounted upon an antenna mounting shaft, said antenna mounting shaft supported by a universal joint bearing, comprising: at least one closed container symmetrically arranged around said mounting shaft containing a liquid and provided with internal liquid flow damping means, said closed container forming a small mass system mechanically coupled to said platform for damping the movements of said antenna platform.
Claim 3
Dependent Claim
26 words
A stabilized antenna platform according to claim 1 wherein said container also contains at least one freely movable ball having a higher density than said liquid.
Claim 4
Dependent Claim
18 words
A stabilized antenna platform according to claim 1 wherein said small mass system comprises a double-walled dish-shaped container.
Claim 5
Dependent Claim
17 words
A stabilized antenna platform according to claim 1 wherein said container comprises a plurality of curved tubes.
Claim 6
Dependent Claim
38 words
A stabilized antenna platform according to claim 4 wherein each of said curved tubes is provided at their ends with an interconnecting return path tube with predetermined restrictions to control the movement of the liquid in said tubes.
Claim 7
Dependent Claim
18 words
A stabilized antenna platform according to claim 1 further including a motor-driven momentum wheel in said counterweight means.
Claim 8
Dependent Claim
21 words
A stabilized antenna platform according to claim 1 wherein the viscosity of said liquid is controlled by means of temperature compensation.
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) | 1979-07-06 | 1980-01-05 | 1980-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-06 | 1984-01-05 | 1984-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-06 | 1988-01-05 | 1988-07-06 | $7700.00 | Window Closed / Lapsed |