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4655983 |
Piston rings and their manufacture
A piston ring is formed by annular upper and lower parts which contact one another at respective surfaces normal to the axis of the piston ring. The parts can be injection moulded from...
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4582328 |
Double acting stirling engine piston ring
A piston ring design for a Stirling engine wherein the contact pressure between the piston and the cylinder is maintained at a uniform level, independent of engine conditions through a balancing of...
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4522412 |
Oil ring with coil expander
A piston ring comprising a generally I shaped oil-scraping oil ring which has upper and lower side rails and a considerably thin web connecting the side rails, and which has an outer peripheral...
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4235447 |
Low friction oil control piston ring
A low friction oil control piston ring for an internal combustion engine has a cylinder engaging outer surface of shallow wave-like configuration having a plurality of spaced cylinder engaging...
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4108448 |
Piston ring assembly
Disclosed is a piston ring including a spacer-expander spring member. In a preferred embodiment the ring is of cast iron and includes two axially spaced cylinder wall contacting lands. At least one...
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4085490 |
Method of making a rolled metal piston ring
A rolled steel oil control piston ring for internal combustion engines is of generally U-shaped cross section with a pair of opposed rigid sidewalls projecting inwardly of the ring from a central...
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4045036 |
Piston oil control ring
In a composite oil control ring for reciprocating piston internal combustion engines which includes a relatively soft parted cast iron ring and an expander-spring disposed internally of the ring to...
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3920254 |
Piston or like sealing or packing
An elastomeric sealing ring, for use as a fluid packing in a piston groove or the like, is of V-shape in radial axial section, with a circumferential sealing band at one periphery and a pair of...
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3371938 |
Piston rings
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3195903 |
Piston oil control ring
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