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    High performance low torque anti-friction bearing assembly
    5.
    发明授权
    High performance low torque anti-friction bearing assembly 失效
    高性能低扭矩抗摩擦轴承总成

    公开(公告)号：US4400042A

    公开(公告)日：1983-08-23

    申请号：US337598

    申请日：1982-01-07

    Applicant: Conrad M. Fritz

    Inventor： Conrad M. Fritz

    IPC: F16C19/18 ,  F16C33/38 ,  F16C33/60 ,  F41A27/16 ,  F16C19/10

    CPC classification number: F16C19/14 ,  F16C19/183 ,  F16C33/3843 ,  F16C33/60 ,  F41A27/16 ,  F16C2300/14

    Abstract: A high performance anti-friction bearing assembly for use in supporting a low torque stabilized platform as, for example, a gun platform mounted on aircraft, a ship or a land vehicle. The bearing assembly comprises three rings of forged alloy steel separated by two axially spaced rings of balls along elements of converging conical surfaces. The balls and their cooperating raceways have a conformity factor of approximately 0.59 and are pre-loaded against these raceways at a normally prevailing contact angle of 35.degree.. The high conformity factor together with various other design features provide a bearing for a stabilized platform operating at high efficiency with minimal torque losses under both simultaneous and non-simultaneous axial, radial and moment load conditions and associated distortio

    Abstract translation: 用于支撑低扭矩稳定平台的高性能抗摩擦轴承组件，例如安装在飞机，船舶或陆上车辆上的枪平台。 轴承组件包括三个锻造合金钢环，两个环沿两个轴向隔开的球沿着会聚锥形表面的元件分开。 球及其配合的跑道具有大约0.59的一致性系数，并且对这些跑道进行预加载

    Stress relieved welds in positive expulsion fuel tanks with elastomeric diaphragm
    8.
    发明授权
    Stress relieved welds in positive expulsion fuel tanks with elastomeric diaphragm 有权

    公开(公告)号：US10139047B2

    公开(公告)日：2018-11-27

    申请号：US14797352

    申请日：2015-07-13

    Applicant: Keystone Engineering Company

    Inventor： Wayne H. Tuttle ,  Ian Ballinger

    IPC: B23K26/00 ,  F17C1/02 ,  F17C13/00 ,  C22C14/00 ,  C22F1/18 ,  C21D1/30 ,  C21D1/42 ,  C21D1/74 ,  B64G1/40

    Abstract: A metallic positive expulsion fuel tank with stress free weld seams may include a first hemispherical shell with a first edge; a pressurized gas inlet attached to the first hemispherical shell; and a metallic cylinder with first and second edges attached to the first hemispherical shell along matching first edges by a first weld seam. The tank may also include a second hemispherical shell with a first edge attached to a fuel outlet fixture. An elastomeric diaphragm may be attached to the fuel outlet fixture on the second hemispherical shell. The second hemispherical shell may be attached to the second edge of the metallic cylinder along matching edges by a second weld seam thereby forming a positive expulsion fuel tank with two interior chambers separated by the elastomeric diaphragm. The first and second weld seams may be subjected to a localized post-weld stress relief heat treatment in which heating of the tank is confined to a distance of 2 inches (5.08 cm) of the first weld seam and a distance of 2 inches (5.08 cm) of the second weld seam such that the stresses in the first and second weld seams are relieved and the elastomeric diaphragm is unaffected by the heat treatment.

    High-performance low-torque anti-friction bearing assembly
    9.
    发明授权
    High-performance low-torque anti-friction bearing assembly 失效
    高性能低扭矩抗摩擦轴承总成

    公开(公告)号：US4523793A

    公开(公告)日：1985-06-18

    申请号：US431357

    申请日：1982-09-30

    Applicant: Conrad M. Fritz

    Inventor： Conrad M. Fritz

    IPC: F16C19/18 ,  F16C33/78 ,  F41A27/16 ,  F16C19/10

    CPC classification number: F16C19/183 ,  F16C33/78 ,  F41A27/16 ,  F16C2300/14

    Abstract: A high-performance low-torque anti-friction bearing assembly having numerous applications including dynamic support of a stabilized platform under severe operating conditions. The assembly consists of two rings provided with two pairs of raceways having respective rows of balls therebetween preferably under static preload. The balls and their raceways have a conformity factor of approximately 0.56 to 0.60 and the two rows of balls are in contact with a respective pair of raceways at converging similar contact angles of about 35 degrees. The ratio of the ball path diameter and the square root of the cross-sectional area of the bearing is at least 15. A bearing incorporating these features performs at high efficiency with minimal torque losses under both simultaneous and non-simultaneous axial, radial and moment load conditions and associated distortions.

    Abstract translation: 具有许多应用的高性能低扭矩抗摩擦轴承组件，包括在恶劣的操作条件下稳定平台的动态支撑。 组件包括两个环，两个环提供有两对滚道，其中优选地在静态预载下具有相应排的滚珠。 球和它们的滚道具有约0.56-0.60的一致性系数，并且两排滚珠与相应的一对滚道接触，以约35度的相似接触角会聚。 轴承的横截面积的球道直径和平方根的比例至少为15.包含这些特征的轴承在同时和非同时轴向，径向和力矩同时具有最小扭矩损耗的情况下以高效率执行 负载条件和相关的失真。

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