| 摘要 |
PCT No. PCT/EP89/00665 Sec. 371 Date Dec. 17, 1990 Sec. 102(e) Date Dec. 17, 1990 PCT Filed Jun. 13, 1989 PCT Pub. No. WO89/12411 PCT Pub. Date Dec. 28, 1989.An application pen for liquids, which are supplied in metered amounts from a reservoir to an application element with the aid of an actuating element, which together with an actuating element and a metering piston is moveable in the direction of the longitudinal axis and is insertable into a bore. Between the bore for an application element and a reservoir a metering chamber is disposed, having at its ends seals, wherein the longitudinal distance of the sealing lips from each other is greater than the distance of a control edge of a lower piston to a control edge of an upper piston and wherein the connection area of the lower piston and the upper piston is smaller in diameter than the lower piston and the upper piston and wherein these have different diameters.
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