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    • 1. 发明授权
    • Circular saw blade for tree cutting and bunching vehicles
    • 用于树切割和聚束车辆的圆锯片
    • US5261306A
    • 1993-11-16
    • US843817
    • 1992-02-28
    • Norval K. MoreyDonald J. Ryan
    • Norval K. MoreyDonald J. Ryan
    • B23D61/02B23D61/06B27B33/08B23D61/04
    • B23D61/021B23D61/06Y10T83/9331Y10T83/9367
    • An improved circular saw blade is rotatable in a guard casing having tree receiving vertically aligned openings in its upper and lower plates. The blade has a peripheral surface formed in part by a series of replaceable circumferentially spaced teeth with transverse cutting edges positioned to rotate about a predetermined first radius. The blade also has a series of circumferentially spaced, generally radially projecting backer tooth mounts for receiving the rear surfaces of the teeth. The mounts have sloped peripheral surfaces lying radially inside the first radius of rotation and have rear surfaces generally parallel to the mount front surfaces. The saw further has generally tangentially projecting finger-like guides in a guide region spaced circumferentially forwardly from each tooth to provide a radially extending chip passing slot between each tooth and guide and the guides have peripheral surfaces positioned to rotate radially inside the first arc of rotation about a second arc of rotation. Rearwardly and outwardly extending trailing surfaces extending substantially perpendicularly from the rear surfaces of the mounts lead from the tooth mounts to the guide peripheral surfaces to form the peripheral surfaces of the saw between the tooth mounts and guides. A series of loop shaped openings join to the chip passing slots and have marginal radially angular chip deflecting walls extending at an angle in a forward direction. Fasteners extend chordally through the mounts from the rear of the mounts into the teeth to releasably secure them to the mounts.
    • 改进的圆锯片可在具有在其上板和下板中接收垂直对齐的开口的树的保护壳中旋转。 叶片具有由一系列可更换的周向间隔开的齿部分地形成的周边表面,其中横向切割边缘定位成围绕预定的第一半径旋转。 叶片还具有一系列周向间隔开的,大致径向突出的支撑齿安装件,用于接收齿的后表面。 安装座具有位于第一旋转半径内的倾斜的周边表面,并且具有大致平行于安装前表面的后表面。 锯在导向区域中进一步具有大致切向突出的指状导向件,该引导区域从每个齿向外周向间隔开,以在每个齿和引导件之间提供径向延伸的芯片通过槽,并且引导件具有定位成在第一旋转圆弧内部径向旋转的外周表面 大约第二弧旋转。 从安装座的后表面基本上垂直延伸的向后和向外延伸的后表面从齿固定件引导到引导周边表面,以在齿安装件和引导件之间形成锯的外周表面。 一系列环形开口连接到芯片通过的槽,并且具有在向前方向上以一定角度延伸的边缘径向角度的芯片偏转壁。 紧固件通过支架从支架的后部延伸到齿中以可释放地将它们固定到支架上。
    • 3. 发明授权
    • Process for extruding polymers
    • 挤出聚合物的方法
    • US4485062A
    • 1984-11-27
    • US510811
    • 1983-07-05
    • James W. DawesDonald J. Ryan
    • James W. DawesDonald J. Ryan
    • B29C47/12B29C47/30B29C47/94B29K105/00B29F3/06
    • B29C47/30B29C47/12B29C47/94B29C47/0016
    • Making polymeric extrudates having a smooth surface by feeding a molten polymeric core material through a die cavity wherein a portion of the wall of the die cavity is a rigid microporous structure located upstream from a narrowed flow passage of the die cavity, the microporous structure having a substantially uniform pore size, simultaneously forcing under pressure through the microporous structure about 0.03-10%, based on the total weight of the extrudate, of a low viscosity liquid to form a sheath on the molten polymeric core material thus displacing the polymeric core material before the resulting sheath-core composite enters the narrowed flow passage of the die cavity said process conducted under conditions to produce a pressure drop across the microporous structure of at least 0.10 MPa more than the pressure applied on the polymeric core material.
    • 通过将熔融的聚合物芯材料通过模腔来制造具有光滑表面的聚合物挤出物,其中模腔的一部分壁是位于模腔的狭窄流动通道上游的刚性微孔结构,所述微孔结构具有 基本上均匀的孔径,同时在压力下通过微孔结构约0.03-10%,基于挤出物的总重量,低粘度液体在熔融聚合物芯材料上形成护套,从而在聚合物芯材料之前移位聚合物芯材料 所得到的皮芯复合体进入模腔的变窄的流动通道,所述方法在条件下进行,以在多孔结构上产生比施加在聚合物芯材上的压力至少0.10MPa多的压降。
    • 4. 发明授权
    • Chlorination or chlorosulfonation of polyethylene in mixed solvent
    • 聚乙烯在混合溶剂中氯化或氯磺化
    • US4145491A
    • 1979-03-20
    • US805151
    • 1977-06-09
    • Donald J. Ryan
    • Donald J. Ryan
    • C08F8/00C08F8/20C08F8/38C08F8/36
    • C08F8/38
    • A process for chlorinating or chlorosulfonating polyethylene comprising dissolving polyethylene in a solvent that is a mixture of methylene chloride and trichlorofluoromethane in a weight ratio of 0.3-1.6, reacting the resultant solution with sulfuryl chloride under pressure to maintain reactants, the resulting chlorinated or chlorosulfonated polyethylene and product gases in a single liquid phase, reducing the pressure on or increasing the temperature of the single liquid phase of chlorinated or chlorosulfonated polyethylene and solvent to form two liquid phases, one a polymer-rich phase and the other a solvent-rich phase, and separating the phases.
    • {PG,1一种氯化或氯磺化聚乙烯的方法,包括将聚乙烯溶解在以二氯甲烷和三氯氟甲烷的混合物的溶剂中,重量比为0.3 {14.61,在压力下使所得溶液与磺酰氯反应以保持反应物, 在单一液相中产生氯化或氯磺化的聚乙烯和产物气体,降低单一液相的氯化或氯磺化聚乙烯和溶剂的压力或增加温度以形成两个液相,一个是富聚合物相,另一个是 富溶相,并分离相。