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    • 101. 发明授权
    • Two-cycle engine
    • 双循环发动机
    • US06945203B2
    • 2005-09-20
    • US10444358
    • 2003-05-23
    • Helmar AmendKlaus-Martin UhlWerner GeyerClaus Fleig
    • Helmar AmendKlaus-Martin UhlWerner GeyerClaus Fleig
    • F02B17/00F02B25/04F02B25/22F02B25/24F02B33/04F02B33/44F02B63/02F02B75/02F02B75/16F02F1/22
    • F02B25/24F02B17/00F02B25/04F02B25/22F02B33/04F02B33/44F02B63/02F02B75/16F02B2075/025F02F1/22
    • A two-cycle engine is provided, especially in a manually-guided implement such as a power chain saw, a brush cutter, a trimmer or the like, and has a cylinder in which is formed a combustion chamber that is delimited by a reciprocating piston that, via a connecting rod, drives a crankshaft that is rotatably mounted in a crankcase. In prescribed positions of the piston, the combustion chamber is connected with the crankcase via at least two transfer channels. At least one air channel is provided that opens out at an air channel window at the cylinder in the region of the piston, and that, in prescribed positions of the piston, is connected with at least two transfer channels via a piston window formed in the piston. To achieve a good scavenging of the combustion chamber, and hence low exhaust gas values of the engine, structural features are provided on the piston window for the defined distribution of air to the transfer channels.
    • 提供了一种双冲程发动机,特别是在诸如动力链锯,刷子切割器,修剪器等的手动引导工具中,并且具有形成有由往复活塞限定的燃烧室的气缸 通过连杆驱动可旋转地安装在曲轴箱中的曲轴。 在活塞的规定位置,燃烧室通过至少两个传送通道与曲轴箱连接。 提供至少一个空气通道,其在活塞的区域中在气缸的空气通道窗口处开口,并且在活塞的规定位置处,通过形成在活塞中的活塞窗口与至少两个传送通道连接 活塞。 为了实现燃烧室的良好的清除,因此发动机的排气值低,在活塞窗上设置了用于将空气定义为传送通道的分布的结构特征。
    • 106. 发明授权
    • Process for the production of polymethacrylimide foam materials
    • 聚甲基丙烯酰胺泡沫材料生产工艺
    • US5928459A
    • 1999-07-27
    • US66776
    • 1998-04-27
    • Werner GeyerHermann SeibertSabine Servaty
    • Werner GeyerHermann SeibertSabine Servaty
    • C08J5/24B32B27/30C08F8/48C08F220/06C08F220/50C08J9/04C08J9/06C08J9/14C08K3/22C08K5/20C08L33/02C08L33/22C08J4/00B05D5/00C08J101/00C08J201/00
    • C08J9/142C08J9/06C08J2201/03C08J2333/24
    • Polymethacrylimide foams are prepared by a method, comprising:preparing a mixture consisting of(a) a monomer mixture of 40-60 wt. % methacrylonitrile, 60-40 wt. % methacrylic acid, and, optionally, up to 20 wt. %, based on the sum of methacrylic acid and methacrylonitrile, of other monofunctional, vinyl-unsaturated monomers,(b) 0.5-8 wt. % of a propellant mixture of formamide or monomethyl formamide and a univalent C.sub.3-8 -aliphatic alcohol,(c) a cross-linking agent system, which consists of(c.1) 0.005-5 wt. % of a vinyl-unsaturated compound which can be radically polymerized, with at least two double bonds in the molecule, and(c.2) 1-5 wt. % magnesium oxide, dissolved in the monomer mixture, and at least one radical initiators and optionally at least one additive, shaped in the form of a sheet;polymerizing the monomers in the sheet;subsequently foaming the polymerizate sheet at temperatures from 200-260.degree. C.; and thenheat treating the sheet in two steps, at a first step of 2-6 hours at 100-130.degree. C. and a second step of 32-64 hours at 180-220.degree. C.
    • 聚甲基丙烯酰胺泡沫体通过以下方法制备:包括:制备由(a)40-60重量份的单体混合物组成的混合物, %甲基丙烯腈,60-40重量% %甲基丙烯酸,以及任选地至多20wt。 %,基于甲基丙烯酸和甲基丙烯腈的总和,其它单官能的乙烯基不饱和单体,(b)0.5-8wt。 %的甲酰胺或单甲基甲酰胺和一价C 3-8脂族醇的推进剂混合物,(c)交联剂体系,其由(c.1)0.005-5wt。 %的可以自由基聚合的乙烯基不饱和化合物,在分子中具有至少两个双键,和(c.2)1-5wt。 溶解在单体混合物中的%氧化镁,以及至少一种自由基引发剂和任选的至少一种成形为片状的添加剂; 聚合片中的单体; 随后在200-260℃的温度下使聚合物片发泡。 然后在100-130℃的2-6小时的第一步骤和180-220℃的第二步32-64小时的两个步骤中进行两步热处理。