Acoustic Bolt Removal
Patent application, filed 11 Sep 98
DEPARTMENT OF THE NAVY WASHINGTON DC
Pagination or Media Count:
A method and apparatus for acoustically removing a frozen bolt from a metal structure having a bolt hole formed therein. The bolt includes a head and a shank portion depending from the head, the shank of the bolt being inserted into the bolt hole of the metal structure. A material inhibiting removal of the bolt from the bolt hole of the metal structure substantially surrounds the shank of the bolt, and an acoustic transducer is removably mounted to the head of the bolt, the acoustic transducer being responsive to a frequency specific resonance applied thereto at a predetermined amplitude. A socket wrench head surrounds the acoustic transducer and the head of the bolt, the socket wrench head applying torque to the head of said bolt and confining the acoustic transducer to the head of the bolt. The frequency specific resonance applied to the acoustic transducer at the predetermined amplitude correspondingly excites the bolt at that frequency specific resonance and predetermined amplitude, thereby loosening the bolt from the bolt hole.