F - Mech Eng,Light,Heat,Weapons – 16 – J
Patent
F - Mech Eng,Light,Heat,Weapons
16
J
277/20, 277/49
F16J 15/00 (2006.01) E21B 10/22 (2006.01) F16J 15/34 (2006.01)
Patent
CA 1228878
ABSTRACT OF THE DISCLOSURE The high-speed seal is a two-part metal-to-metal type seal that, in its initial application, acts as a conventional resilient O-ring. As the seal begins to operate, a separate O-ring, retained within a seal gland channel formed in the body of a primary metal seal, provides an initial seal. As the seal continues to function over a length of time, the separate O-ring retained within the seal gland in the ring wears away and metal-to-metal contact begins to be made. Thus, the seal gradually converts from a standard O-ring type of seal to a lapped-in metal-to-metal seal during operation of the bit.
434849
Gowling Lafleur Henderson Llp
Smith International Inc.
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