US4438893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prime power source and control for a guided projectile
Assignee: Lockheed Martin Corp
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Filing: 1973-08-10
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Granted: 1984-03-27
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Expires: 1993-08-10
Abstract
Abstract In a projectile including a spinning main housing and a despun canard frame having deflectable canards thereon, a pair of stator windings are disposed within the main housing and a cooperating pair of rotors are arranged within the canard frame. The first stator windings and corresponding rotor generate prime power and permit control of the rotational position of the canard frame while the second stator windings and associated rotor allow control of the deflectable canards.
Inventors
- 👤 Timothy B. Sands
- 👤 Ronald R. Sinclair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:47
CPC Classifications
F; F42; F42B; F42B10/00; F42B10/60; F42B10/62; F42B10/64
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
69 words
In a projectile including a main housing capable of being spun at high speeds and a member capable of being despun connected thereto for relative rotation, wherein the improvement comprises: a set of windings mechanically coupled to said main housing and a rotor mechanically coupled to said despun member for generating electrical power; and electrical means coupled to said windings for controlling the roll orientation of said despun member.
Claim 2
Dependent Claim
69 words
In a projectile including a main housing capable of being spun at high speeds and a member capable of being despun connected thereto for relative rotation, wherein the improvement comprises: a set of windings mechanically coupled to said main housing and a rotor mechanically coupled to said despun member for generating electrical power; and electrical means coupled to said windings for controlling the roll orientation of said despun member.
Claim 3
Dependent Claim
15 words
Apparatus as defined in claim 1, wherein said windings and rotor together constitute an alternator.
Claim 4
Dependent Claim
19 words
Apparatus as defined in claim 2, wherein said electrical means includes means for varying the load on said windings.
Claim 5
Dependent Claim
62 words
In a projectile including a main housing capable of being spun at high speeds and a canard frame capable of being despun and having deflectable canards thereon, wherein the improvement comprises: a set of windings coupled to said main housing; a rotor coupled to said deflectable canards; and means for applying electrical signals to said windings to occasion deflection of said canards.
Claim 6
Dependent Claim
62 words
In a projectile including a main housing capable of being spun at high speeds and a canard frame capable of being despun and having deflectable canards thereon, wherein the improvement comprises: a set of windings coupled to said main housing; a rotor coupled to said deflectable canards; and means for applying electrical signals to said windings to occasion deflection of said canards.
Claim 7
Dependent Claim
15 words
Apparatus as defined in claim 4 wherein said windings and rotor together constitute a motor.
Claim 8
Dependent Claim
46 words
Apparatus as defined in claim 4, said rotor having a cam surface thereon and said deflectable canards having a cam follower connected thereto whereby electrical signals applied to said windings cause rotation of said cam surface such that said cam follower occasions deflection of said canards.
Claim 9
Dependent Claim
29 words
Apparatus as defined in claim 6, wherein said deflectable canards are arranged on a yoke having said cam follower thereon, said yoke being rotatably disposed on said canard frame.
Claim 10
Dependent Claim
40 words
Apparatus as defined in claim 6, further including a second set of windings coupled to said main housing and a second rotor coupled to said canard frame whereby relative rotation between said main housing and canard frame generates electrical power.
Claim 11
Dependent Claim
33 words
Apparatus as defined in claim 8, further including means for applying electrical signals to said second windings to cause rotation of said canard frame for positioning said deflectable canards to a desired plane.
Claim 12
Dependent Claim
19 words
Apparatus as defined in claim 9 wherein said rotors are disposed for relative rotation with respect to each other.
Claim 13
Dependent Claim
25 words
Apparatus as defined in claim 10 wherein said rotor can rotate at high speed while said second rotor can rotate less than one full revolution.
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) | 1987-03-27 | 1987-09-26 | 1988-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-03-27 | 1991-09-26 | 1992-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-03-27 | 1995-09-26 | 1996-03-27 | $7700.00 | Window Closed / Lapsed |