| 摘要 |
PCT No. PCT/EP94/00866 Sec. 371 Date Jul. 31, 1995 Sec. 102(e) Date Jul. 31, 1995 PCT Filed Mar. 19, 1994 PCT Pub. No. WO94/27922 PCT Pub. Date Dec. 8, 1994A piston rod (2) of a piston-cylinder unit (3) carries at the top a pressing plunger (not shown) of a glass forming machine and is guided in a guide sleeve (22). The guide sleeve (22) is seated in a magnetically conductive support sleeve (20) of a retaining flange (14). The support sleeve (20) carries an external coil (27) whose connecting wires (30) are guided outwardly to a plug socket (37). On the top of the piston (6) is fixed an internal flange (39) of a circular annular metallic actuating member (40). At the uppermost end of the pressing stroke of the piston (6) the actuating member (40) enters into an annular chamber (29) around the coil (27) and thereby changes the inductance of the coil.
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