| 摘要 |
A reciprocating engine is provided having a hollow cylinder and spaced crankshaft with an eccentric cam, a piston slidable in said cylinder with radial clearance, a plurality of spaced annular grooves around the piston circumference, a ring of resin having a low coefficient of friction in each said groove between the piston and cylinder, a connecting rod connected at one end to said crankshaft through a prelubricated anti-friction bearing and at the other end to the piston by a deflectable member capable of angular deflection.
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