Boring or penetrating the earth – Bit or bit element – Rolling cutter bit or rolling cutter bit element
Patent
1988-12-05
1990-01-23
Dang, Hoang C.
Boring or penetrating the earth
Bit or bit element
Rolling cutter bit or rolling cutter bit element
175359, 277 35, 384 94, 384470, 384477, 384572, E21B 1022, F16C 1900
Patent
active
048952150
ABSTRACT:
A rotatable seal cage assembly for positioning between relatively movable members including a ring with inner and outer circumferential edges, which edges are joined by two flat side surfaces extending therebetween. An annular projecting surface extends from one of the ring side surfaces. A projection extends from the other side surface of the ring to be engaged by rotatable bearings to rotate the ring when relative rotation of the members occurs. Radially spaced seals are provided on each side of the annular projecting surface to seal between the rotatable seal cage assembly and each of the relatively movable members and inhibit damage to the radially spaced seals between the relatively movable members.
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Dang Hoang C.
Hayden Jack W.
Melius Terry Lee
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