Dynamic O-ring seal

Details Dynamic O-ring seal Dynamic O-ring seal

1981-06-04

1983-02-08

Footland, Lenard A.

Bearings

Rotary bearing

Roller drill bit

277168, F16C 3374

Patent

active

043726240

ABSTRACT:
An O-ring shaft seal is disclosed to isolate a lubricated bearing from an external environment as utilized in a typical sealed bearing rotary rock bit. The O-ring is confined within a pair of symmetrical and complementry V-shaped surfaces, each surface having a rounded vertex. A first V-shaped surface is formed on a bearing journal which is integral with a body of the rock bit, a second V-shaped surface being formed in a cutter cone mounted on the journal. A pressure differential across the O-ring in either direction will force the O-ring into porportionately tighter contact with the converging sides of both V-shaped surfaces.

REFERENCES:
patent: 2360731 (1944-10-01), Smith
patent: 2593193 (1952-04-01), Rockwell
patent: 3186739 (1965-06-01), Mahoff
patent: 3397928 (1968-08-01), Galle
patent: 3620580 (1971-11-01), Cunningham
patent: 3905450 (1975-09-01), Persson

Affiliated with

Also associated with

Rating

Dynamic O-ring seal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Dynamic O-ring seal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Dynamic O-ring seal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-46359