Lubricant cooled rotary drill head seal

Details Lubricant cooled rotary drill head seal Lubricant cooled rotary drill head seal

1978-03-23

1979-03-13

Smith, Robert I.

Seal for a joint or juncture

Seal between relatively movable parts

Relatively rotatable radially extending sealing face member

F16D 306, F16J 1516

Patent

active

041438817

ABSTRACT:
An improved rotary drill head is provided having a pair of seals installed in a seal cavity with lubricant maintained in the seal cavity between the seals. The lubricant is circulated from the seal cavity to a reservoir and back to the seal cavity thereby cooling the seals.

REFERENCES:
patent: 2303090 (1942-11-01), Pranger et al.
patent: 3472518 (1969-10-01), Harlan
patent: 3529835 (1970-09-01), Lewis
patent: 3621912 (1971-11-01), Wooddy

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