Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1976-01-08
1978-10-24
Aegerter, Richard E.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277194, F16J 902
Patent
active
041218388
ABSTRACT:
A shaft coaxially mounted within a cylinder is sealed with respect to that cylinder by means of an annular carrier affixed to the shaft and having its periphery facing the inner wall of the cylinder provided with an annular seal groove having an inverted L-shaped cross section and receiving two circumferentially split, radially expandable seal rings, one of which is rectangular in cross section and another of correspondingly inverted L-shaped configuration, with the L-shaped seal ring having its sliding surface facing the cylinder inclined toward a radial side face thereof at an angle equal to or greater than the angular deflection of the sliding surface towards the inner wall of the cylinder due to the deflection of the seal ring about a circular line extending through the body of the L-shaped seal ring and defining a plane perpendicular to the axis of that seal ring, said deflection occurring as a result of resilient radial expansion and applied fluid pressure on the seal.
REFERENCES:
patent: 1370771 (1921-03-01), Wilson
patent: 3266810 (1966-08-01), Reeser
patent: 3397893 (1968-08-01), Kampert
patent: 3912428 (1975-10-01), Chiba et al.
Aegerter Richard E.
Footland L.
Nippon Piston Ring Co. Ltd.
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