Expansible chamber devices – With lubricating means – Piston has lubricant retaining or conducting means
Patent
1975-11-12
1977-11-01
Maslousky, Paul E.
Expansible chamber devices
With lubricating means
Piston has lubricant retaining or conducting means
92160, 123 4135, F01B 3110
Patent
active
040560449
ABSTRACT:
An improved piston assembly including a generally cylindrical piston body having a crown, a depending relatively short ring land and a central cavity comprising inner and outer chambers. Seal receiving grooves are disposed in the ring land and are adapted to receive sealing rings, one of the grooves being specifically adapted to receive an oil ring. A generally cylindrical skirt body is provided and has an end in proximity to the piston body adjacent the ring land and is aligned with the piston body. An annular groove in the end of the skirt body opens into the outer chamber of the central cavity for receiving cooling oil draining from the cavity and for splashing the cooling oil against the interior of the piston body to cool the same. Bores from the oil ring receiving groove convey oil from such groove to the annular groove.
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Jacobson Wayne D.
Kamman Kenneth R.
Caterpillar Tractor Co.
Maslousky Paul E.
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