Inertial sensing microelectromechanical (MEM) safe-arm device
| DWPI Title: Microelectromechanical safe-arm device, has sense mass slidably connected to track, and latch releasing sense mass by acceleration acting in direction perpendicular to surface of substrate, where released sense mass traverses pathway |
| Abstract: Microelectromechanical (MEM) safe-arm devices comprise a substrate upon which a sense mass, that can contain an energetic material, is constrained to move along a pathway defined by a track disposed on the surface of the substrate. The pathway has a first end comprising a "safe" position and a second end comprising an "armed" position, whereat the second end the sense mass can be aligned proximal to energetic materials comprising the explosive train, within an explosive component. The sense mass can be confined in the safe position by a first latch, operable to release the sense mass by an acceleration acting in a direction substantially normal to the surface of the substrate. A second acceleration, acting in a direction substantially parallel to the surface of the substrate, can cause the sense mass to traverse the pathway from the safe position to the armed position. |
| Use: Microelectromechanical (MEM) safe-arm device for an explosive train. |
| Advantage: The device prevents un-intentional operation of an energetic component by rendering the explosive train safe, and increases the length of the pathway of the train without having increased size. |
| Novelty: The device has a sense mass (210) slidably connected to a track (206) and movable along a pathway (208), where the sense mass is moved from an end to another end by the acceleration acting in a direction parallel to a surface of a substrate (202) e.g. glass-ceramics substrate. A latch (212) is arranged on the surface of the substrate, and confines the sense mass at the ends of the pathway. The latch releases the sense mass by the acceleration acting in a direction perpendicular to the surface of the substrate, where the released sense mass traverses the pathway. |
| Filed: 6/14/2006 |
| Application Number: US2006452874A |
| Tech ID: SD 7716.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
| Data from Derwent World Patents Index, provided by Clarivate All rights reserved. Republication or redistribution of Clarivate content, including by framing or similar means, is prohibited without the prior written consent of Clarivate. Clarivate and its logo, as well as all other trademarks used herein are trademarks of their respective owners and used under license. |