PROPELLER GOVERNOR CONTROL FOR TURBOPROP ENGINES
    191.
    发明申请
    PROPELLER GOVERNOR CONTROL FOR TURBOPROP ENGINES 审中-公开
    用于涡轮发动机的螺旋桨总控制

    公开(公告)号:WO1993006353A1

    公开(公告)日:1993-04-01

    申请号:PCT/US1992007845

    申请日:1992-09-16

    CPC classification number: F02C9/58 B64C11/303

    Abstract: To prevent propeller overshoot, a propeller governor control (18, 20, 34) modifies a speed command issued to the speed setpoint actuator of a propeller governor. The control (34) establishes a false setpoint that causes the propeller governor to change pitch before the propeller reaches the speed ordered by the speed command. The propeller governor control (20) also compensates for small calibration errors in the propeller governor.

    Abstract translation: 为了防止螺旋桨过冲,螺旋桨调速器控制(18,20,34)修改发给螺旋桨调速器的转速设定点执行器的速度指令。 控制器(34)建立一个虚拟设定点,使螺旋桨调速器在螺旋桨达到速度指令所排列的速度之前改变间距。 螺旋桨调速器控制(20)还补偿螺旋桨调速器中的小校准误差。

    HIGH QUALITY PHENOL RECTIFICATION WITH ENERGY RECOVERY
    192.
    发明申请
    HIGH QUALITY PHENOL RECTIFICATION WITH ENERGY RECOVERY 审中-公开
    具有能量回收的高品质酚醛树脂

    公开(公告)号:WO1993006073A1

    公开(公告)日:1993-04-01

    申请号:PCT/US1992008044

    申请日:1992-09-23

    CPC classification number: C07C37/74 Y10S203/08 Y10S203/20 C07C39/04

    Abstract: The process for rectification of phenol, said phenol prepared from crude phenol being the product of decomposition of cumene hydroperoxide and having previously been distilled to remove large portions of acetone, cumene and alpha methylstyrene, comprising withdrawing the overhead vapors from the column overhead and feeding said overhead vapors to a condenser, thereby condensing a major portion of said vapors; withdrawing a small portion of said overhead vapors from said condenser while still in a vapor state, said small portion being relatively enriched in lights and laden with light acids; returning the condensate from said condenser to the phenol distillation column as reflux; and withdrawing product phenol from at least one theoretical stage below the top of the phenol distillation column, said product phenol having improved clarity when dispersed in water, said clarity being at least 93 percent light transmission as measured by an electrophotometer in a water light test. It is preferred that the condenser in step (c) is a steam generating condenser, thereby condensing a major portion of said vapors while vaporizing water circulating through the steam generating condenser to produce steam.

    BRAKE PISTON ADJUSTER MECHANISM
    193.
    发明申请
    BRAKE PISTON ADJUSTER MECHANISM 审中-公开
    制动活塞调节器机构

    公开(公告)号:WO1993004298A1

    公开(公告)日:1993-03-04

    申请号:PCT/US1992006796

    申请日:1992-08-13

    CPC classification number: F16D65/543

    Abstract: The brake piston adjuster mechanism includes an expandable or deformable tube (80) which is attached to the piston (60) and engaged by a deforming member comprising a pin (190) having a threaded end (194) receiving thereon a nut (193) and tube expander (192). The nut (193) biases the tube expander (192) against a chamfered pin shoulder (191). The tube expander (192) has at least one inner diameter chamfer (198) which engages the chamfered pin shoulder (191) in order to impose preload forces upon the chamfered pin shoulder (191) and reduce stresses at smaller diameter portion (195) of the pin. The nut (193) may be a castellated nut (193) which receives a locking wire or pin (200) extending through an opening (199) in the threaded end (194) of the pin (190). Alternatively, the tube expander and nut may comprise a one-piece expander nut (293, 393, 493) having an enlarged radially extending end portion (294, 394, 494) and the nut (293, 393, 493), when advanced along the threads of the pin (190), causes a chamfer (298, 398, 498) of the end portion (294, 394, 494) to advance along the chamfered pin shoulder (191) and cause the end portion (294, 394, 494) to deform elastically, improving the preload retention of the connection.

    AQUEOUS PROCESS FOR INJECTION MOLDING CERAMIC POWDERS AT HIGH SOLIDS LOADINGS
    194.
    发明申请
    AQUEOUS PROCESS FOR INJECTION MOLDING CERAMIC POWDERS AT HIGH SOLIDS LOADINGS 审中-公开
    高固含量注射成型陶瓷粉末的水性工艺

    公开(公告)号:WO1993004011A1

    公开(公告)日:1993-03-04

    申请号:PCT/US1992006799

    申请日:1992-08-13

    CPC classification number: C04B35/636

    Abstract: A process for shaping parts from ceramic powder that comprises the steps of (1) forming a concentrated mixture in excess of 40 % ceramic solids by volume, the mixture comprising ceramic powder, a gel forming material chosen from the class of polysaccharides known as 'agaroids', and a gel forming material solvent and being formed in a blender that provides a shearing action and is heated to raise the temperature of the mixture to about 70 to 100 °C; and (2) molding the mixture at a temperature sufficient to produce a self-supporting structure comprising the powder and gel. The parts exhibit excellent green strength and are rapidly fired without cracking, distortion or shrinkage problems.

    REMOVABLE SEATS FOR A DUAL POPPET VALVE
    196.
    发明申请
    REMOVABLE SEATS FOR A DUAL POPPET VALVE 审中-公开
    可拆卸的双口阀座

    公开(公告)号:WO1993002307A1

    公开(公告)日:1993-02-04

    申请号:PCT/US1992004802

    申请日:1992-06-09

    CPC classification number: F16K1/44 Y10T137/6065 Y10T137/86775

    Abstract: In a valve having a housing with a cavity therein with an entrance port connected to a source of fluid and an outlet port connected to a fluid system. The valve has a body with first and second poppet members which control the flow of fluid from the entrance port to the outlet port. An actuation member connected to the body moves the first and second poppets with respect to first and second seats, respectively, to control the flow of fluid from the entrance port to the cavity and correspondingly the flow of fluid to the outlet port. The actuation member sequentially moves the first and second poppets toward the first and second seats, respectively, by initially moving the second poppet into engagement with the second face to partially interrupt the flow of fluid through cavity and thereafter moving the first poppet into engagement with the first face to completely interrupt the flow of fluid through the cavity to the outlet port. The first and second seats each have a cylindrical member located in said cavity with a first end having a flange and a conical surface thereon and a second end that engages the housing, the conical surface defining the contact for the seating of the corresponding first and second poppets on the body. A flexible member located in grooves in the housing engages the cylindrical members of the first and second seats and a locking ring attached to the housing retains the cylindrical members in the housing while compressing the flexible member to form seals between the cylindrical members and the housing. The flexible member allows some dimensional changes to occur in the housing without effecting the sealing to assure that the flow of fluid through the cavity to the outlet port is interrupted when the first and second poppets engage said first and second seats.

    RAPIDLY SOLIDIFIED ALUMINUM-MAGNESIUM BASE BRAZING ALLOYS
    198.
    发明申请
    RAPIDLY SOLIDIFIED ALUMINUM-MAGNESIUM BASE BRAZING ALLOYS 审中-公开
    快速固化铝 - 镁基烧结合金

    公开(公告)号:WO1992022398A1

    公开(公告)日:1992-12-23

    申请号:PCT/US1992004179

    申请日:1992-05-18

    Abstract: A rapidly solidified brazing alloy consists essentially of about 14 to 45 weight percent magnesium and 0 to 10 weight percent of at least one element selected from the group consisting of silicon, bismuth, strontium, lithium, copper, calcium, zinc and tin, the balance being aluminum and incidental impurities. The alloy has the form of a foil (liquidus temperature

    Abstract translation: 快速凝固的钎焊合金基本上由约14至45重量%的镁和0至10重量%的至少一种选自硅,铋,锶,锂,铜,钙,锌和锡的元素组成,余量 是铝和杂质。 该合金具有箔(液相线温度<570℃)的形式,可用于钎焊不可热处理的快速固化的Al-Fe-V-Si合金箔,片,板和管,以产生诸如 除冰管道,超导,散热器,换热器,蒸发器,高温应用的蜂窝板。

    CABLE OPERATED ELECTROMECHANICAL BRAKE AND SYSTEM THEREFOR
    199.
    发明申请
    CABLE OPERATED ELECTROMECHANICAL BRAKE AND SYSTEM THEREFOR 审中-公开
    电缆操作机电制动器及其系统

    公开(公告)号:WO1992021542A1

    公开(公告)日:1992-12-10

    申请号:PCT/US1992004347

    申请日:1992-05-22

    Abstract: A system and method of controlling the operation of a brake such as a drum brake (20) in either a parking or service braking mode of operation. A cable (50) is attached to one end of a brake shoe and the tension in the cable is varied under control of a motor (60) and associated gear device (62) to produce a desired brake torque responsive to a signal indicative of operator applied brake activity during service brake operation. To operate as a parking brake the motor is controlled to produce a determinable tension in the cable to lock the brake.

    Abstract translation: 一种在停车或行车制动操作模式下控制诸如鼓式制动器(20)的制动器的操作的系统和方法。 电缆(50)连接到制动蹄的一端,并且电缆中的张力在电动机(60)和相关联的齿轮装置(62)的控制下变化,以响应于指示操作者的信号产生期望的制动转矩 在制动操作期间施加制动活动。 为了作为驻车制动器操作,电动机被控制以在电缆中产生可确定的张力以锁定制动器。

    DISC BRAKE WITH POWERED INTEGRAL PARKING MECHANISM
    200.
    发明申请
    DISC BRAKE WITH POWERED INTEGRAL PARKING MECHANISM 审中-公开
    带有集成停车机构的碟形刹车

    公开(公告)号:WO1992020937A1

    公开(公告)日:1992-11-26

    申请号:PCT/US1992003689

    申请日:1992-05-05

    Abstract: The disc brake (10, 106, 108, 206) with powered integral parking mechanism comprises a twin piston disc brake (106, 108, 206) having a screw member (22, 24; 122, 124; 222, 224) and nut (28, 29; 228, 229) adjuster mechanism. The twin pistons (16, 18; 216, 218) receive service braking hydraulic pressure to effect a service braking application, and also may be displaced mechanically for a parking application by way of the rack (80, 280) and pinion (47, 48; 247, 248) parking mechanism that is operated by hydraulic pressure. The rack (80, 280) and pinion (47, 48; 247, 248) parking mechanism may be located within the caliper housing (20, 220) such that the rack (80) extends between respective drive pinions (47, 48) located about the screw members (22, 24) in order to effect rotation of the screw members (22, 24) in opposite directions, or the rack (280) may extend longitudinally across the same side of both drive pinions (247, 248) to effect rotation of the drive pinions (247, 248) and associated screw members (222, 224) in the same direction of rotation. The drive pinions (47, 48; 247, 248) have ratchet teeth (49) which engage corresponding ratchet teeth (39) on screw member flanges (32, 34) such that during release the height (B) of a flange ratchet tooth (39) determines the running clearance of the disc brake pads.

Patent Agency Ranking