US2016102952A1PendingUtilityA1

Very Low-Power Actuation Devices

45
Individually held — no corporate assignee on recordPriority: Jul 4, 2011Filed: Dec 20, 2015Published: Apr 14, 2016
Est. expiryJul 4, 2031(~5 yrs left)· nominal 20-yr term from priority
Inventors:Jahangir S. RastegarJacques Fischer
F42B 10/64F42B 30/08F42B 10/18C06D 5/00
45
PatentIndex Score
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Claims

Abstract

A munition including: a control surface actuation device including: an actuator comprising two or more pistons, each of the pistons being movable between an extended and retracted position, the retracted position resulting from an activation of each of the two or more pistons; and a movable rack having a portion engageable with a portion of the two or more pistons to sequentially move the rack upon activation of each of the two or more pistons; and a control surface operatively connected to the rack such that movement of the rack moves the control surface; Where the actuator comprises three pistons; the portion of the rack is a plurality of spaced portions and the portion of the piston is an end portion of the piston exposed when the piston is in the extended position or the movable rack is linear and moves linearly.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A munition comprising:
 a control surface actuation device comprising:
 an actuator comprising two or more pistons, each of the pistons being movable between an extended and retracted position, the retracted position resulting from an activation of each of the two or more pistons; and 
 a movable rack having a portion engageable with a portion of the two or more pistons to sequentially move the rack upon activation of each of the two or more pistons; and 
   a control surface operatively connected to the rack such that movement of the rack moves the control surface;   wherein the actuator comprises three pistons.   
     
     
         2 . A munition comprising:
 a control surface actuation device comprising:
 an actuator comprising two or more pistons, each of the pistons being movable between an extended and retracted position, the retracted position resulting from an activation of each of the two or more pistons; and 
 a movable rack having a portion engageable with a portion of the two or more pistons to sequentially move the rack upon activation of each of the two or more pistons; and 
   a control surface operatively connected to the rack such that movement of the rack moves the control surface;   wherein the portion of the rack is a plurality of spaced portions and the portion of the piston is an end portion of the piston exposed when the piston is in the extended position.   
     
     
         3 . The munition of  claim 2 , wherein the plurality of spaced portions on the rack are one of convex or concave portions and the end portion is the other of the convex or concave portions. 
     
     
         4 . The munition of  claim 3 , wherein the convex and concave portions are conical. 
     
     
         5 . A munition comprising:
 a control surface actuation device comprising:
 an actuator comprising two or more pistons, each of the pistons being movable between an extended and retracted position, the retracted position resulting from an activation of each of the two or more pistons; and 
 a movable rack having a portion engageable with a portion of the two or more pistons to sequentially move the rack upon activation of each of the two or more pistons; and 
   a control surface operatively connected to the rack such that movement of the rack moves the control surface;   wherein the movable rack is linear and moves linearly.

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