US4241349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for disposing corner cube reflector for detection
Assignee: Davis Instruments Corp
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Filing: 1979-03-09
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Granted: 1980-12-23
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Expires: 1999-03-09
Abstract
Abstract In a corner cube radar reflector of the octahedral radar reflector cluster type wherein three planar radar reflecting plates are orthogonally disposed all in planes of non-coincidence to the horizon, an improved holder is disclosed. Typically first and second tapered members are conformed to the apexes of upwardly and downwardly opposed corner cubes with the upper cube in the "catch rain" position. The tapered members are urged one towards another and fastened to a vertical support, which support can either be rigid or alternatively tensive. There results a support for the reflector in which the designed corner cubes are addressed with optimum solid angle disposed to the horizon from which radar interrogation will most probably occur.
Inventors
- 👤 John L. Connell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:39
CPC Classifications
H; H01; H01Q; H01Q15/00; H01Q15/14; H01Q15/18
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
97 words
Apparatus for holding an octahedral radar reflector cluster having eight corner cubes comprising in combination first and second tapered members, each said tapered member confronted across opposing corner cubes to each of the three mutually orthogonal surfaces of a corner cube, said respective tapered members being disposed with their respective constricted ends towards one another; means for urging said respective tapered members towards one another across the apexes of said opposed corner cubes whereby said tapered members are wedged into opposing apexes of said opposed corner cubes; and a vertical support fastened to one of said members.
Claim 2
Dependent Claim
97 words
Apparatus for holding an octahedral radar reflector cluster having eight corner cubes comprising in combination first and second tapered members, each said tapered member confronted across opposing corner cubes to each of the three mutually orthogonal surfaces of a corner cube, said respective tapered members being disposed with their respective constricted ends towards one another; means for urging said respective tapered members towards one another across the apexes of said opposed corner cubes whereby said tapered members are wedged into opposing apexes of said opposed corner cubes; and a vertical support fastened to one of said members.
Claim 3
Dependent Claim
13 words
The invention of claim 1 and wherein said vertical support comprises a line.
Claim 4
Dependent Claim
27 words
The invention of claim 1 and wherein said vertical support comprises a vertical rod with means attached to said rod for urging said members one towards another.
Claim 5
Dependent Claim
40 words
The invention of claim 1 and wherein said respective tapered members include first and second truncated three-sided pyramids, the taper and truncation of said pyramids cooperatively configured to contact each of the three mutually orthogonal surfaces over a discrete area.
Claim 6
Dependent Claim
49 words
The invention of claim 4 and including at least one spacer member protruding from the point of truncation of said pyramids for contact with the other of said members for maintaining said truncated pyramid members in spaced apart relation with the truncated apex portions of said pyramids in juxtaposition.
Claim 7
Dependent Claim
109 words
An octahedral radar reflecting cluster comprising in combination three planar radar reflecting surfaces all orthogonally disposed about a mutual point of intersection to define eight corner cube arrays; said reflecting orthogonal surfaces cross-bored between at least two opposed corner cubes; first and second tapered members confronted to said mutually opposed corner cube surfaces; and, means extending from one said tapered member to the other said tapered member and across said bore between said opposed corner cubes for urging said respective tapered members one towards one another with said orthogonally disposed reflecting surfaces therebetween; and means attached to one of said members for fastening said member to a vertical support.
Claim 8
Dependent Claim
109 words
An octahedral radar reflecting cluster comprising in combination three planar radar reflecting surfaces all orthogonally disposed about a mutual point of intersection to define eight corner cube arrays; said reflecting orthogonal surfaces cross-bored between at least two opposed corner cubes; first and second tapered members confronted to said mutually opposed corner cube surfaces; and, means extending from one said tapered member to the other said tapered member and across said bore between said opposed corner cubes for urging said respective tapered members one towards one another with said orthogonally disposed reflecting surfaces therebetween; and means attached to one of said members for fastening said member to a vertical support.
Claim 9
Dependent Claim
46 words
The invention of claim 6 and wherein each of said tapered members comprises a truncated right circular cone or a first resilient small cylindrical plug with a second resilient larger cylindrical plug, each said plug conformable to the orthogonally intersecting surfaces of said corner cube reflector.
Claim 10
Dependent Claim
31 words
The invention of claim 6 and wherein each of said tapered members includes truncated pyramids, said pyramids conforming to the sides of each of said opposed corner cubes of said reflector.
Claim 11
Dependent Claim
17 words
The invention of claim 6 and wherein said means for urging said members together includes a line.
Claim 12
Dependent Claim
89 words
A radar reflector comprising in combination at least three orthogonally disposed planar surfaces intersecting at a common point to define at least eight corner cubes; first and second tapered members; each said tapered member configured for conforming to the respective three sides of a corner cube approximate the apex thereof; said reflective surfaces as disposed together defining an aperture across opposed corner cubes; means for urging said respective tapered members towards one another across said aperture; and a vertical support for maintaining said opposed members in a vertical disposition.
Claim 13
Dependent Claim
89 words
A radar reflector comprising in combination at least three orthogonally disposed planar surfaces intersecting at a common point to define at least eight corner cubes; first and second tapered members; each said tapered member configured for conforming to the respective three sides of a corner cube approximate the apex thereof; said reflective surfaces as disposed together defining an aperture across opposed corner cubes; means for urging said respective tapered members towards one another across said aperture; and a vertical support for maintaining said opposed members in a vertical disposition.
Claim 14
Dependent Claim
13 words
The invention of claim 10 and wherein said vertical support comprises a line.
Claim 15
Dependent Claim
35 words
The invention of claim 10 and wherein said vertical support includes a line affixed to one of said members and extending upwardly and a line affixed to the other of said members and extending downwardly.
Claim 16
Dependent Claim
41 words
The invention of claim 10 and wherein said support includes a rigid vertical member and means rigidly affixing said vertical member to one of said members so as to dispose said members as urged towards one another to a vertical axis.
References Cited (Backward Citations)
US3451060A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |