Patent ID: 8596199
Filing Date: 2013-12-03
Classification: F42B

Abstract:
1. A bearing system for a projectile having a longitudinally extending body portion with a forward portion and a rearward portion and a spindle generally defining a central axis, the projectile being subject to pre-launch, launch, set-back, set-forward, balloting, and in-flight forces, the bearing system comprising: a first bearing configuration having a first member; a second bearing configuration having a second member; said first bearing configuration and said second bearing configuration being configured to permit selective relative rotation between said body portion and said spindle about said central axis; said first member defining a first bearing surface extending at an acute first angle with respect to said central axis; a first engagement portion fixed relative to said body portion defining a first engagement surface extending at an angle substantially parallel to said first angle of said first bearing surface; said second member defining a second bearing surface extending at an obtuse second angle with respect to said central axis; a second engagement portion fixed relative to said body portion defining a second engagement surface extending at an angle substantially parallel to said second angle of said second bearing surface; said first bearing surface being configured to engage said first engagement surface upon the projectile experiencing set-back forces; said first bearing surface being configured to be substantially disengaged from said first engagement surface upon said projectile experiencing set-forward forces; said second bearing surface being configured to be substantially disengaged from said second engagement surface upon said projectile experiencing set-back forces; and said second bearing surface being configured to engage said second engagement surface upon the projectile experiencing set-forward forces.