FLOATING SEAL FOR EARTH BORING BIT

• Main Author: ZAHRADNIK ANTON F
• Format: Patent
• Language: English
• Published: 30.03.1983
• Edition: 3
• Subjects: BLASTING; CYLINDERS; EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; ENGINEERING ELEMENTS AND UNITS; FIXED CONSTRUCTIONS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MECHANICAL ENGINEERING; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS; PISTONS; SEALINGS; THERMAL INSULATION IN GENERAL; WEAPONS

An earth boring bit has a bearing seal that floats to accommodate angular and axial movement of the cutter 31 with respect to the shaft 15. The seal is located in an annular groove 17 formed in the shaft 15. A supporting ring 23 is located in the groove 17. The supporting ring 23 has an inner diamet...