ASSEMBLY OF CORE CATCHERS Russian patent published in 1995 - IPC

FIELD: mining. SUBSTANCE: assembly of core catchers is made in form of body 1 with shoe 2. Holder 3 is located inside body 1. Mounted in recesses of holder 3 are toggles pressed by springs. Upper part of holder 3 has conical seat 6 in which conical ring 7 of collet core catcher 8 is installed. Collar 9 of holder 3 limits lift of holder in body in body. Connected to top of body 1 is adapter 10. EFFECT: higher reliability and efficiency of core catchers assembly due to combined operation, of core catchers, increased yield of core, and reduced labor input in their manufacture. 2 dwg