Patent ID: 6302633
Filing Date: 2001-10-16
Classification: F16B

Abstract:
Multiple pitch threaded fastener apparatus comprising:a collar member configured with a bore formed with internal collar threads of a first pitch, said first pitch being different from said second pitch and external threads of a second pitch;a bolt member formed with external threads meshed with said internal threads and including a shank configured with an actuating surface movable longitudinally along a predetermined path as said bolt is rotated relative to said collar, said bolt further including at least one release recess disposed along said actuating surface;a barrel formed with interior threads meshing with said external collar threads further including at least one latch slot;an actuating shoulder on one of said members and facing longitudinally in one direction for travel along a predetermined path as said bolt is rotated relative to said collar to advance thereinto;an actuator interposed between said bolt and barrel members, mounted on the other of said members and a keeper shiftable from a latching position engaging said latch slot inhibiting said collar from rotating relative to said barrel to an unlatching position disengaging said keeper from said slot to free said collar with said bolt for rotating relative to said barrel, said actuator further including a follower disposed in said predetermined path and engageable by said shoulder upon said bolt being rotated a selected distance into said collar to shift said keeper from said latching position to said unlatching position.