Patent US3978486A successfully refreshed from Google Patents.
US3978486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antenna reflector support
Assignee: Individual
•
Filing: 1974-12-30
•
Granted: 1976-08-31
•
Expires: 1994-12-30
Abstract
Abstract A slotted cylindrical electrically conductive support for a parabolic micro-wave transmitter antenna reflector coaxial with and surrounding a conical antenna reflector whereby omnidirectional rays of energy from said conical antenna pass from the inside of the cylindrical support radially to the outside of said support, because the slots in the support are of such shape and dimensions that each of these slots can be considered as a radiating element. A non-conducting weather protecting film may surround the cylindrical support.
Inventors
- 👤 Michiel Antonius Reinders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:51
CPC Classifications
H; H01; H01Q; H01Q19/00; H01Q19/10; H01Q19/18; H01Q1/00; H01Q1/42; H01Q1/425; H01Q13/00; H01Q13/02; H01Q13/04
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
In an omnidirectional micro-wave antenna comprising: A. a parabolic reflector, B. a feed means at the focus of said parabolic reflector, C. a conical reflector coaxial with and spaced from said parabolic reflector for reflecting the parallel rays from said parabolic reflector radially omnidirectionally, said feed means mounted in the vicinity of the apex of said conical reflector, the improvement comprising: D. a passive cylindrical support for said parabolic reflector surrounding said control reflector and coaxial therewith, said support comprising an electrically conductive material containing slots for the transfer of energy radially from the inside to the outside of said support.
Claim 2
Dependent Claim
101 words
In an omnidirectional micro-wave antenna comprising: A. a parabolic reflector, B. a feed means at the focus of said parabolic reflector, C. a conical reflector coaxial with and spaced from said parabolic reflector for reflecting the parallel rays from said parabolic reflector radially omnidirectionally, said feed means mounted in the vicinity of the apex of said conical reflector, the improvement comprising: D. a passive cylindrical support for said parabolic reflector surrounding said control reflector and coaxial therewith, said support comprising an electrically conductive material containing slots for the transfer of energy radially from the inside to the outside of said support.
Claim 3
Dependent Claim
14 words
An antenna according to claim 1 wherein said feed means is a radiating waveguide.
Claim 4
Dependent Claim
16 words
An antenna according to claim 1 wherein said feed means is supported by said conical reflector.
Claim 5
Dependent Claim
13 words
An antenna according to claim 1 including means for supporting said conical reflector.
Claim 6
Dependent Claim
26 words
An antenna according to claim 1 wherein the axis of said reflectors and support is vertical and the omnidirectional radial pattern of said rays is horizontal.
Claim 7
Dependent Claim
23 words
An antenna according to claim 1 including a non-conductive foil surrounding said support to protect said reflectors and feed means from the weather.
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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |