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US 7,194,889 B1Granted
MEMS multi-directional shock sensor with multiple masses
AssigneeThe United States of America as represented by the Secretary of the Navy
InventorsDaniel Jean, Gabriel Smith, John Kunstmann
Life of this patent
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Abstract
A multi-directional shock sensor including two masses arranged to move in directions, which are mutually perpendicular to one another. A moveable locking member prevents movement of a slider, which is used in the arming arrangement of a submunition. In response to an acceleration in a plane, one or both masses will move. The masses are operably coupled to the locking member to effect its movement out of its locking engagement with the slider, due to such acceleration.
Claims19
A multi-directional shock sensor, comprising:
- a moveable member normally situated at a first location;
- a first mass operable to move said moveable member out of said first location to a second location, in response to a first acceleration;
- and
- a second mass operable to move said moveable member out of said first location to said second location, in response to a second acceleration;
- a plurality of supports;
- and
- a plurality of springs connecting said first mass, said second mass and said moveable member to respective ones of said supports.
4 more elements
A multi-directional shock sensor, comprising:
- a slider member;
- a moveable locking member positioned at a first location to prevent movement of said slider member;
- a first mass operable to move said moveable locking member out of said first location to a second, latched location, to allow movement of said slider member in response to an acceleration comprising a component in one of a first positive direction and a first negative direction;
- a second mass operable to move said locking member out of its first location to said second, latched location to allow movement of said slider member in response to an acceleration comprising a component in one of a second positive direction and a second negative direction;
- a plurality of supports;
- and
- a plurality of springs connecting said first mass, said second mass and said locking member to respective ones of said supports.
4 more elements
A multi-directional shock sensor, comprising:
- a slider member;
- an elongated moveable locking member positioned at a first location to prevent movement of said slider member;
- a first mass operable to move said elongated moveable locking member out of said first location to a second, latched location, to allow movement of said slider member in response to an acceleration comprising a component in one of a first positive direction and a first negative direction;
- a second mass operable to move said elongated moveable locking member out of its first location to said second, latched location to allow movement of said slider member in response to an acceleration comprising a component in one of a second positive direction and a second negative direction;
- a plurality of supports;
- and
- a plurality of springs connecting said first mass, said second mass and said locking member to respective ones of said supports,
- wherein said first mass and said elongated moveable locking member include a first projection arrangement;
- said first projection arrangement including a first projection connected to said elongated moveable locking member and a second projection connected to said first mass,
- wherein one of said first projection and said second projection comprises a cam at an end thereon and an other of said first projection and said second projection comprises a camming surface upon which said cam rides,
- wherein said second mass and said elongated moveable locking member include a second projection arrangement, said second projection arrangement includes a first projection and a second projection connected to said elongated moveable locking member, a fulcrum, and a beam comprising a first end and a second end, which is operable to pivot about said fulcrum,
- wherein said second mass comprises a first projection portion and a second projection portion,
- wherein said first projection portion is positioned substantially adjacent said first projection of said second projection arrangement and operably engages said first projection to move said elongated moveable locking member in response to movement of said second mass in said second negative direction, and
- wherein said second projection portion is positioned substantially adjacent said first end of said beam and operably engages said first end to pivot said beam about said fulcrum to allow said second end to engage said second projection to move said locking member in response to movement of said second mass in said second positive direction.
11 more elements
Dependencies are inferred from the claim text.