US4711413A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Target tracking arrangement
Assignee: Diehl Verwaltungs Stiftung
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Filing: 1986-12-09
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Granted: 1987-12-08
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Expires: 2006-12-09
Abstract
Abstract A target tracking arrangement which is located in the scanning or search head of a guided airborne body, such as a missile, including a detector located behind a lens arrangement. The arrangement has two rotatable superimposed discs arranged in the path of the beam of the lens arrangement, and which discs are rotatable at different rotational speeds, and possess differently eccentrically extending slits which are transmissive or permeable to beams or rays.
Inventors
- 👤 Lothar Stessen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:04
CPC Classifications
F; F41; F41G; F41G7/00; F41G7/20; F41G7/22; F41G7/2253; F41G7/2273; F41G7/2293; G; G01; G01S; G01S3/00; G01S3/78; G01S3/782; G01S3/785; G01S3/786
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
54 words
A target tracking arrangement located in a search head of a guided missile; comprising a detector; a lens arrangement, said detector being positioned behind said lens arrangement; two superimposed rotatable discs rotating at different rotational speeds being interposed in the optical path of said lens arrangement, said discs possessing different eccentrically extending radiation-penetratable slits.
Claim 2
Dependent Claim
54 words
A target tracking arrangement located in a search head of a guided missile; comprising a detector; a lens arrangement, said detector being positioned behind said lens arrangement; two superimposed rotatable discs rotating at different rotational speeds being interposed in the optical path of said lens arrangement, said discs possessing different eccentrically extending radiation-penetratable slits.
Claim 3
Dependent Claim
18 words
A target tracking arrangement as claimed in claim 1, wherein said lens arrangement possesses an adjustable focal length.
Claim 4
Dependent Claim
19 words
A target tracking arrangement as claimed in claim 1, comprising means for imparting variable rotational speeds to said discs.
Claim 5
Dependent Claim
27 words
A target tracking arrangement as claimed in claim 3, wherein said means comprises a drive for the rotation of said discs, at a fixed rotational speed ratio.
Claim 6
Dependent Claim
22 words
A target tracking arrangement as claimed in claim 1, wherein a first one of said discs includes a substantially radially extending slit.
Claim 7
Dependent Claim
27 words
A target tracking arrangement as claimed in claim 5, wherein a second one of said disc includes a spirally extending slit along an arc of about 360°.
Claim 8
Dependent Claim
31 words
A target tracking arrangement as claimed in claim 1, comprising an angle-measurement encoder to impart information over the momentary position of the intersecting area of the two slits of said discs.
Claim 9
Dependent Claim
36 words
A target tracking arrangement as claimed in claim 2, wherein said lens arrangement comprises a zoom-lens arrangement; and a position encoder for the delivery of information over the momentarily set focal distance of said zoom-lens arrangement.
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) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |