| 摘要 |
1,197,411. Pistons. MONDIAL PISTONDOTT. GALLI ERCOLE & C.-S.p.A. 23 Sept., 1968 [9 Jan., 1968], No. 45062/68. Heading F2T. [Also in Division B3] An aluminium alloy piston 2 contains at least one insert 1 of a copper based alloy, e.g. aluminium bronze having a copper content of 80-90%. In addition to piston ring grooves, the inserts may provide gudgeon pin seatings or be located in the piston head. |
