US3696432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined scan and track antennas
Assignee: Motorola Solutions Inc
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Filing: 1971-01-15
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Granted: 1972-10-03
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Expires: 1991-01-15
Abstract
Abstract Combined scan and track antennas are disclosed, each comprising a reflector and a feed thereto in which the track reflector and its feed and the feed to the scan reflector are all fixed with respect to each other and the scan reflector rolls in such a manner that a line through the center of the spherical feed antenna and the fixed feed point therefor always is perpendicular to a point on the surface of the spherical reflector through which it extends.
Inventors
- 👤 Harold Anderson
- 👤 Jerry Blanchard Cain
- 👤 John G Doggett Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 23:53
CPC Classifications
H; H01; H01Q; H01Q25/00; H01Q3/00; H01Q3/12; H01Q3/16; H01Q3/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
56 words
Combined antenna means for radiating waves in the same area comprising a first and a second reflector rollable relative to each other, respective feed means for said reflectors, said first reflector and both said feed means being fixed with respect to each other, and means for rolling said second reflector with respect to said first reflector.
Claim 2
Dependent Claim
56 words
Combined antenna means for radiating waves in the same area comprising a first and a second reflector rollable relative to each other, respective feed means for said reflectors, said first reflector and both said feed means being fixed with respect to each other, and means for rolling said second reflector with respect to said first reflector.
Claim 3
Dependent Claim
39 words
The invention of claim 1 in which said second reflector is spherical in shape and its respective feed means is positioned to radiate energy in a direction of said second reflector from the focus point of said second reflector.
Claim 4
Dependent Claim
28 words
The invention of claim 2 in which said means for rolling includes a rolling guide having a spherical surface which has half the radius of the second antenna.
Claim 5
Dependent Claim
27 words
The invention of claim 3 in which said rolling guide fits on said first reflector in a manner to present its spherical surface to said second reflector.
Claim 6
Dependent Claim
21 words
The invention of claim 4 in which means are provided to prevent slipping of the second reflector and the rolling guides.
Claim 7
Dependent Claim
14 words
The invention of claim 5 in which said first reflector is of parabolic shape.
Claim 8
Dependent Claim
33 words
The invention of claim 1 in which said second reflector is cylindrical in shape and said means for rolling said second antenna with respect to said first antenna is also cylindrical in shape.
Claim 9
Dependent Claim
37 words
The invention of claim 1 in which said second reflector is spherical in shape and said means for rolling said second antenna with respect to said first antenna comprises a pair of means having contacting cylindrical surfaces.
Claim 10
Dependent Claim
15 words
The invention of claim 8 in which one of said contacting cylindrical surfaces is concave.
Claim 11
Dependent Claim
16 words
The invention of claim 8 in which at least one of said contacting surfaces is convex.
Claim 12
Dependent Claim
19 words
The invention of claim 8 in which said contacting surfaces are located in the same direction from both reflectors.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |