Seal for a joint or juncture – Seal between relatively movable parts – Relatively rotatable radially extending sealing face member
Patent
1974-09-11
1976-01-27
Rothberg, Samuel B.
Seal for a joint or juncture
Seal between relatively movable parts
Relatively rotatable radially extending sealing face member
277 9, 277139, 267 15, F16J 906
Patent
active
039348865
ABSTRACT:
A corrugated radial spacer expander to be combined with side rails to form a compound oil scraping ring for internal combustion engines. The spacer expander has an annular shape cut at a portion thereof to present two opposing ends and has a corrugation consisting of successively alternating valleys and crests which are connected by intermediate flanks. At each one of said ends, there is formed a protrusion which bridges the neighbouring flanks over a valley adjacent the end, which protrusion is so shaped and positioned to prevent the valley at one end from being received by the valley at the other end, thereby ensuring that the opposing ends are correctly positioned in end to end relation, which would otherwise deteriorate the expansion force of the expander to make the oil scraper ring inoperative.
REFERENCES:
patent: 2343942 (1944-03-01), Teetor
patent: 3166331 (1965-01-01), Warrick
patent: 3338582 (1967-08-01), De Bruin
patent: 3488060 (1970-01-01), Prasse
Nippon Piston Ring Co. Ltd.
Rothberg Samuel B.
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