Patent US5270725A successfully refreshed from Google Patents.
US5270725A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating antenna with wire dipoles
Assignee: Thales SA
•
Filing: 1991-12-27
•
Granted: 1993-12-14
•
Expires: 2011-12-27
Abstract
Abstract The antenna is a rotating dipole antenna comprising a base, a rigid support rotatably mounted on the base, a plurality of wire dipoles fixed to the support, and means to feed each dipole with electrical energy from a first end of said dipole. In order to provide for the efficient fastening of the dipoles, the rigid support extends before at least the first end of each dipole, and this first end is fixed directly to the rigid support while the second ends of the dipoles are either fixed directly to the rigid support or connected to it by a catenary supported on the support. The antenna can be applied to the designing of power antennas in the decametric wave range.
Inventors
- 👤 Francois Ursenbach
- 👤 Jean-Marc Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:38
CPC Classifications
H; H01; H01Q; H01Q21/00; H01Q21/06; H01Q21/061; H01Q21/062; H01Q3/00; H01Q3/02; H01Q3/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
188 words
A rotating dipole antenna comprising: a base; a rigid support rotatably mounted on the base; a plurality of pairs of horizontal beams positioned in a predetermined plane and being fixed to the rigid support; a first plurality of transverse arms fixed to the horizontal beams; a second plurality of transverse arms fixed to the rigid support; a plurality of wire dipoles, each wire dipole having a first inner end and a second outer end; means for feeding each of the wire dipoles with electrical energy at the first inner ends of each of the wire dipoles; a first mounting means for mounting each of the wire dipoles at their first inner ends to a respective one transverse arm of the first plurality of transverse arms; a second mounting means for mounting first selected ones of the wire dipoles at their second outer ends to a respective one transverse arm of the second plurality of transverse arms; and a first catenary for connecting second selected ones of the wire dipoles at their second outer ends to a selected one of the second plurality of transverse arms the rigid support.
Claim 2
Dependent Claim
188 words
A rotating dipole antenna comprising: a base; a rigid support rotatably mounted on the base; a plurality of pairs of horizontal beams positioned in a predetermined plane and being fixed to the rigid support; a first plurality of transverse arms fixed to the horizontal beams; a second plurality of transverse arms fixed to the rigid support; a plurality of wire dipoles, each wire dipole having a first inner end and a second outer end; means for feeding each of the wire dipoles with electrical energy at the first inner ends of each of the wire dipoles; a first mounting means for mounting each of the wire dipoles at their first inner ends to a respective one transverse arm of the first plurality of transverse arms; a second mounting means for mounting first selected ones of the wire dipoles at their second outer ends to a respective one transverse arm of the second plurality of transverse arms; and a first catenary for connecting second selected ones of the wire dipoles at their second outer ends to a selected one of the second plurality of transverse arms the rigid support.
Claim 3
Dependent Claim
52 words
The rotating dipole antenna according to claim 1, wherein the rigid support comprises a vertical mast and the horizontal beams of each pair of horizontal beams are positioned so that one horizontal beam of each pair of horizontal beams is located on each side of a median longitudinal plane of the mast.
Claim 4
Dependent Claim
18 words
The rotating dipole antenna according to claim 1, wherein the first and second mounting means comprise a rod.
Claim 5
Dependent Claim
45 words
The rotating dipole antenna according to claim 1, wherein the means for feeding the wire dipoles with electrical energy comprises feeder lines which extend along the horizontal beams and the first plurality of transverse arms to connect with the first ends of the wire dipoles.
Claim 6
Dependent Claim
27 words
The rotating dipole antenna according to claim 1, wherein the second plurality of transverse arms are located to be mounted with a topmost and bottommost wire dipole.
Claim 7
Dependent Claim
27 words
The rotating dipole antenna according to claim 4, wherein the second plurality of transverse arms are located to be mounted with a topmost and bottommost wire dipole.
Claim 8
Dependent Claim
27 words
The rotating dipole antenna according to claim 1, further comprising a third plurality of transverse arms fixed to an outside of a topmost and bottommost horizontal beam.
Claim 9
Dependent Claim
27 words
The rotating dipole antenna according to claim 4, further comprising a third plurality of transverse arms fixed to an outside of a topmost and bottommost horizontal beam.
Claim 10
Dependent Claim
27 words
The rotating dipole antenna according to claim 5, further comprising a third plurality of transverse arms fixed to an outside of a topmost and bottommost horizontal beam.
References Cited (Backward Citations)
US2577469A
Cited
US2586276A
Cited
US3165817A
Cited
EP0002233A1
Cited
DE3246917A1
Cited
FR2591806A1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-12-13 | 1997-06-14 | 1997-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-12-13 | 2001-06-14 | 2001-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-12-13 | 2005-06-14 | 2005-12-14 | $7700.00 | Window Closed / Lapsed |