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1. 发明授权

US4310946A Electromagnetic energy-carrying tube and fabrication method therefor, and the combination thereof with suction cleaning apparatus 失效
标题翻译：电磁承载管及其制造方法及其与抽吸清洁装置的组合
公开(公告)号：US4310946A
公开(公告)日：1982-01-19
申请号：US19454
申请日：1979-03-12
申请人： John C. Baker , Richard O. Finley , David A. Stanwood , Robert C. Bryson
发明人： John C. Baker , Richard O. Finley , David A. Stanwood , Robert C. Bryson
IPC分类号： A47L9/24 , B29C53/02 , B29D23/00 , F16L11/118 , F16L11/16 , B29D23/12 , F16L11/12
CPC分类号： B29D23/005 , A47L9/24 , B29C53/02 , F16L11/1185 , F16L11/16
摘要： The hose, which is particularly adapted for use with an electrically-driven vacuum cleaning apparatus, comprises a substantially air-tight, flexible tube which is pneumatically coupled between the vacuum pump and the suction head. The suction hose comprises one or more elongated strips which is or are helically wound into tubular form. In a pair of parallelly placed strips, the strip margin of the first strip is secured to an adjacent margin of the second strip at adjoining convolutions of the strips. Electrical conductors are carried by the strips within helically extending cavities formed at the edges or margins of each of the strips and are a portion of that means which electrically couples the cleaning brush to the electrical power supply.
摘要翻译：特别适用于电动真空清洁设备的软管包括气动地连接在真空泵和抽吸头之间的基本上气密的柔性管。抽吸软管包括一个或多个细长的条，其被螺旋形地缠绕成管形。在一对平行放置的条带中，第一条带的带边缘在条的相邻卷绕处固定到第二条带的相邻边缘。电导体由在每个条的边缘或边缘处形成的螺旋形延伸的空腔中的条带承载，并且是将清洁刷电电耦合到电源的装置的一部分。

2. 发明授权

US4345805A Self-sealing vacuum hose swivel fitting 失效
标题翻译：自密封真空软管旋转接头
公开(公告)号：US4345805A
公开(公告)日：1982-08-24
申请号：US76285
申请日：1979-09-17
申请人： Richard O. Finley , David A. Stanwood
发明人： Richard O. Finley , David A. Stanwood
IPC分类号： A47L9/24 , F16L25/00 , F16L27/08 , F16L33/00 , H01R3/04
CPC分类号： F16L27/0812 , A47L9/242 , A47L9/246 , F16L25/00 , F16L33/00 , Y10S285/903 , Y10S285/921
摘要： A fitting (10) secures a vacuum hose (20) to a wand or tank of a vacuum cleaner. The hose is swivelably and pneumatically sealed within the fitting through use of a sealing surface (18) on the fitting in engagement with a flexible lip (28) at the end portion (24) of the vacuum hose. A ring (30) engageable with the fitting compresses the end portion in order to bias the flexible lip into engagement with the sealing surface. The electrical terminations including slip rings (144) are used to terminate a hose (120) with electrical conductors therein to cooperating electrical connections.
摘要翻译：配件（10）将真空软管（20）固定到真空吸尘器的棒或罐。软管通过使用与真空软管的端部部分（24）处的柔性唇缘（28）接合的配件上的密封表面（18）可旋转和气动地密封在配件内。可与配件接合的环（30）压缩端部，以便将柔性唇偏压成与密封表面接合。包括滑环（144）的电气终端用于终止具有其中的电导体的软管（120）以配合电连接。

3. 发明授权

US4070138A Screen changer apparatus 失效
标题翻译：换网器
公开(公告)号：US4070138A
公开(公告)日：1978-01-24
申请号：US596913
申请日：1975-07-17
申请人： David A. Stanwood
发明人： David A. Stanwood
IPC分类号： B01D29/00 , B29C47/68 , B29C47/96 , B29F3/00
CPC分类号： B29C47/96 , B01D29/15 , B01D29/904 , B29C47/681 , B29C47/0009 , B29C47/0023
摘要： A housing has a threaded bore opening to an inlet and an outlet. The outlet axis is substantially perpendicular to the bore axis while the inlet axis is off-center from the bore axis. A plug in the housing bore comprises three cylindrical portions which are threaded in the housing bore and which are joined together but spaced apart by perforate cylindrical support tubes of lesser diameter than the threaded portions. A screen mesh extends about each support tube. Bores extend radially through two of the threaded cylindrical portions and only one at a time is alignable with the housing outlet, depending upon the threaded position of the plug in the housing bore. Accordingly, molten plastic material enters into the bore from the off-center housing inlet which urges the plastic material around the exterior of the screen to limit clogging and to extend screening life. Flow continues through the screen, the radial openings in the support tube, the bore in the threaded cylindrical portion of the plug, and the housing outlet. Back-pressure of the fluid material is adjustable by rotating the plug and its outlet bore with respect to the housing outlet to vary the opening size therebetween. Accidental complete lack of communication between the cylindrical portion bore and the housing outlet and any resulting excessive fluid back-pressure damaging to the extruder is prevented by an annular groove in the threaded cylindrical portion which permits material leakage out of the housing.
摘要翻译：壳体具有通向入口和出口的螺纹孔。出口轴线基本上垂直于孔轴线，而入口轴线与孔轴线偏心。壳体孔中的塞子包括三个圆柱形部分，其在壳体孔中螺纹连接并且被连接在一起，但是通过直径小于螺纹部分的穿孔圆柱形支撑管隔开。筛网围绕每个支撑管延伸。孔径径地延伸穿过两个螺纹圆柱形部分，并且根据插头在壳体孔中的螺纹位置，每次只能一个与壳体出口对准。因此，熔融的塑料材料从偏心壳体入口进入孔中，该入口促使围绕屏幕外部的塑料材料限制堵塞并延长筛选寿命。流动通过屏幕继续，支撑管中的径向开口，插头的螺纹圆柱形部分中的孔和壳体出口。流体材料的背压可通过相对于壳体出口旋转塞子及其出口孔而改变其间的开口尺寸来调节。筒状部分孔与壳体出口之间意外的完全缺乏连通性，并且通过螺纹圆柱形部分中的环形槽阻止了对挤出机的任何所导致的过度的流体背压损伤，这允许材料从壳体泄漏出来。

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