Patent ID: 6290231
Filing Date: 2001-09-18
Classification: E21B,F16J

Abstract:
In a diverter having a housing with bore and a lateral flow outlet, a body received in the bore, the body having an axial passage and a lateral flow outlet extending from the axial passage through the body to the lateral flow outlet in the housing, an annular upper seal located above the lateral flow outlets, an annular lower seal located below the lateral flow outlets, a fluid passage extending through the diverter for supplying fluid to deform the seals into sealing engagement between the body and the housing, each of the seals comprising:an elastomeric central portion with an inner diameter wall, an outer diameter wall and upper and lower sides, and a cavity in one of the walls sealed from an annular void above each of the seals and an annular void below each of the seals;a pair of rigid rings having an interface abutting the upper and lower sides ofthe central portion;each of the interfaces of the rings having a generally radially-facing shoulder which is matched to a mating shoulder on the central portion; andwherein each central portion further comprises a pair of lips protruding from one of the diameter walls, the pair of lips being axially spaced apart to seal the cavity for receiving the fluid, each of the lips having a portion which protrudes radially past the metal rings.