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    Pistons for internal combustion engines or for compressors
    271.
    发明授权
    Pistons for internal combustion engines or for compressors 失效
    用于内燃机或压缩机的活塞

    公开(公告)号：US3908521A

    公开(公告)日：1975-09-30

    申请号：US44447774

    申请日：1974-02-21

    Applicant: HEPWORTH & GRANDAGE LTD

    Inventor： COCKCROFT FREDERICK EDWARD

    IPC: F02F3/04 ,  F16J1/04 ,  F16J1/06

    CPC classification number: F02F3/04 ,  F02F3/042 ,  F05C2201/021 ,  F05C2201/0448 ,  F05C2251/042 ,  F16J1/04 ,  F16J1/06

    Abstract: A light metal piston, for an internal combustion engine or a compressor, has a crown with a skirt integrally connected to the crown around the opposing thrust faces of the piston and providing a closed internal cavity with the crown. An insert of lower coefficient of expansion than the light metal, conforming to the internal shape of the skirt, is superimposed on the inner surface of the skirt. The insert is formed as two independent parallel bands extending from a gudgeon pin boss, the bands being joined by a connecting portion. One of the bands is an upper band positioned nearer the crown while the other band is a lower one positioned nearer to the open end of the skirt with the upper band exerting much less control than the lower band.

    Abstract translation: 用于内燃机或压缩机的轻金属活塞具有冠部，其具有围绕活塞的相对推力面一体地连接到冠部的裙部，并且提供具有冠部的封闭内部空腔。 与裙部的内部形状一致的比轻金属更低的膨胀系数的插入件重叠在裙部的内表面上。 插入件形成为从舵头凸台延伸的两个独立的平行带，该带通过连接部分连接。 其中一个乐队是位于更接近皇冠的上一个乐队，而另一个乐队是位于裙子开口端的较低乐队，上方的乐队比较低乐队的控制少得多。

    Contact free and directly cooled piston arrangement
    272.
    发明授权
    Contact free and directly cooled piston arrangement 失效
    联系免费和直接冷却活塞安排

    公开(公告)号：US3855906A

    公开(公告)日：1974-12-24

    申请号：US45201074

    申请日：1974-03-15

    Applicant: MOHRENSTEIN ERTEL A ,  MOHRENSTEIN ERTEL M

    Inventor： MOHRENSTEIN ERTEL M ,  MOHRENSTEIN ERTEL A

    IPC: F02B75/02 ,  F02B75/32 ,  F02F3/00 ,  F02F3/28 ,  F01B31/10 ,  F16J15/18

    CPC classification number: F02B75/32 ,  F02B2075/025 ,  F02F3/00 ,  F02F3/28 ,  F05C2201/0448

    Abstract: A mushroomed type piston is mounted on the top of a reciprocating hollow cylindrical piston bushing. The piston has a flanged side wall extending downwardly adjacent to and parallel to the piston cylinder wall so that an annular space is formed between the piston side wall and the piston bushing. A supporting wall extends upwardly into the annular space and sliding bearing pieces are mounted on the supporting wall and slidably provide frictionless support for the piston bushing. Provided on the exterior of the flanged side wall of the piston is a contact-free labyrinth packing or seal which serves the dual function of sealing and cooling the piston. Inlet and outlet ports are provided through the piston side wall to admit carburant and cooling air, and to exhaust combustants.

    Abstract translation: 一个蘑菇式活塞安装在往复式中空圆柱形活塞衬套的顶部。 活塞具有向下邻近并平行于活塞气缸壁向下延伸的凸缘侧壁，使得在活塞侧壁和活塞衬套之间形成环形空间。 支撑壁向上延伸到环形空间中，并且滑动轴承件安装在支撑壁上并且可滑动地为活塞衬套提供无摩擦支撑。 在活塞的法兰侧壁的外部设有无接触迷宫式密封件，用于密封和冷却活塞的双重功能。 入口和出口通过活塞侧壁提供，以允许渗碳和冷却空气，并排出燃烧器。

    Two-piece oil-cooled piston with thermal expansion control
    273.
    发明授权
    Two-piece oil-cooled piston with thermal expansion control 失效
    具有热膨胀控制的两片油冷却活塞

    公开(公告)号：US3805677A

    公开(公告)日：1974-04-23

    申请号：US23074172

    申请日：1972-03-01

    Applicant: TRW INC

    Inventor： CLARY H ,  SKOPIN H

    IPC: F01M1/08 ,  F02F3/00 ,  F01P3/10 ,  F16J1/00

    CPC classification number: F02F3/0015 ,  F01M2001/086 ,  F05C2201/021 ,  F05C2201/0448 ,  F05C2251/042

    Abstract: A multi-piece piston assembly including a skirt defining portion and a head defining portion which interfit to provide wrist pin bores in registry for receiving a wrist pin, the skirt defining and head defining portions being composed of a metal having good thermal conductivity such as an aluminum alloy, together with a bridge member which is anchored in the skirt defining portion in the region of the thrust faces to provide thermal expansion control at the top of the skirt portion and to provide additional mechanical strength.

    Abstract translation: 一种多片式活塞组件，包括裙部限定部分和头部限定部分，其相互配合以提供用于接纳腕针的对接孔中的腕针孔，所述裙部限定部分和头部限定部分由具有良好导热性的金属组成，例如 铝合金以及锚定在推力面的区域中的裙部限定部分中的桥构件，以在裙部的顶部提供热膨胀控制并提供额外的机械强度。

    Piston and piston rings unit for an internal combustion engine
    274.
    发明授权
    Piston and piston rings unit for an internal combustion engine 失效
    内燃机活塞和活塞环单元

    公开(公告)号：US3759148A

    公开(公告)日：1973-09-18

    申请号：US3759148D

    申请日：1968-02-13

    Applicant: SEALFIRE

    Inventor： GEFFROY R

    IPC: F02F5/00 ,  F02F3/00 ,  F16J9/00 ,  F16J9/06 ,  F16J9/10 ,  F16J9/20 ,  F01B31/10

    CPC classification number: F16J9/00 ,  F02F3/00 ,  F05C2201/0448 ,  F05C2225/02 ,  F05C2225/04 ,  F16J9/06 ,  F16J9/066 ,  F16J9/067 ,  F16J9/20

    Abstract: A piston and compression and oil control piston rings unit for internal combustion engines, said unit being placed in a cylinder delimiting a combustion chamber with its head and said piston which comprises a body formed with a head and a skirt, grooves receiving said rings, oil return orifices and a central cavity, each piston ring and its groove comprising a pair of upper contiguous faces and a pair of lower contiguous faces one of said faces of each piston ring being a face assuming the main work of the piston ring, in which: AN EFFICIENT SEALING MEANS IS PLACED BETWEEN THE FACE OF EACH PISTON RING ASSUMING THE MAIN WORK OF THE PISTON RING AND THE CONTIGUOUS FACE OF ITS GROOVE, ON AT LEAST A CIRCLE ADJOINING THE INNER LIMIT OF THE FACE OF THE PISTON RING, AND AN ACCESS MEANS IS PLACED ON AT LEAST ONE IMPORTANT PART OF THE AREA BETWEEN THE UPPER CONTIGUOUS FACES OF EACH PISTON RING AND ITS GROOVE, FOR THE PRESSURE EXISTING ABOVE THE PISTON RING.

    Abstract translation: 用于内燃机的活塞和压缩和油控活塞环单元，所述单元被放置在限定燃烧室的气缸中，其头部和所述活塞包括形成有头部和裙部的主体，容纳所述环的凹槽，油 每个活塞环和其凹槽包括一对上连续面和一对下邻接面，每个活塞环的所述面之一是假定活塞环的主要工作的面，其中：

    Piston
    275.
    发明授权
    Piston 失效

    公开(公告)号：US3626815A

    公开(公告)日：1971-12-14

    申请号：US3626815D

    申请日：1970-05-25

    Applicant: AMERICAN MOTORS CORP

    Inventor： FINGEROOT MAX ,  MINTY ROBERT G

    IPC: F02B75/22 ,  F02F3/04 ,  F16J1/04 ,  F02B75/06 ,  F16H21/40

    CPC classification number: F02B75/22 ,  F02F3/047 ,  F02F2200/06 ,  F05C2201/021 ,  F05C2201/0448 ,  F16J1/04 ,  Y10T74/2154 ,  Y10T74/2162

    Abstract: A piston constructed with a greater amount of its total weight located on one side of the longitudinal axis for the piston pin bore than on the other side. Where an offset piston pin mounting arrangement is utilized, the greater amount of the total weight of the piston is located on the same side of the longitudinal axis of the piston as the offset. The greater weight being provided, preferably, by making the thrust skirt of the piston of a greater wall thickness than the antithrust skirt. In another embodiment, the greater weight being provided by making the thrust wall of the piston pin bore of a greater thickness than the antithrust wall.

    Piston for internal combustion engine
    276.
    发明授权
    Piston for internal combustion engine 失效

    公开(公告)号：US3613521A

    公开(公告)日：1971-10-19

    申请号：US3613521D

    申请日：1969-09-30

    Applicant: KOMATSU MFG CO LTD

    Inventor： ITANO TAKUMI

    IPC: F02F3/00 ,  F02F3/22 ,  F01B31/08 ,  B23P15/10 ,  F16J1/00

    CPC classification number: F02F3/22 ,  F02F3/003 ,  F05C2201/021 ,  F05C2201/0448 ,  Y10T29/49256

    Abstract: This specification discloses a cooling system for a piston formed of two parts and joined by brazing within annular grooves. Passages for cooling fluids are conveniently formed before the separate pieces are joined and are positioned such that the high temperature at common joined areas is effectively limited to prevent temperature deterioration of the bond between the two joined pieces. In addition, the cooling fluid transfers heat away from a head portion of the piston and means are provided to utilize as a cooling fluid a lubricating fluid normally present at a pin-bearing surface of the piston.

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