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    • 2. 发明授权
    • Tamper-resistant brake actuator
    • 防撬制动器
    • US5315918A
    • 1994-05-31
    • US20152
    • 1993-02-19
    • William C. Pierce
    • William C. Pierce
    • B60T17/08F01B7/00B25G3/00F01B29/00
    • B60T17/083Y10T403/477Y10T403/7005
    • An air-operated combination diaphragm spring brake has a tamper-resistant connection between a head (46) and a spring side of a flange case (18) which together form a spring chamber (16) housing a power spring (66). The head (46) has an annular rim (70), and the flange case has an annular flange (78) with a diaphragm (48) sandwiched therebetween. A plurality of tabs (102) on one flange rotate into L-shaped channels (94) to lock the head to the flange case with a bayonet style engagement. An alternative embodiment employs threads (112, 114) on the head and adapter flanges to seal the spring chamber. A further embodiment seals the head to a cast flange case using a threaded hoop 116 fitted over the flange case to engage the threads on the head flange.
    • 气动组合隔膜弹簧制动器在头部(46)和凸缘壳体(18)的弹簧侧之间具有防篡改连接,这些连接件一起形成容纳动力弹簧(66)的弹簧室(16)。 头部(46)具有环形边缘(70),并且凸缘壳体具有环形凸缘(78),隔膜(48)夹在其间。 一个凸缘上的多个凸片(102)旋转成L形通道(94),以将卡头卡扣式卡合到凸缘壳体上。 替代实施例在头部和适配器凸缘上使用螺纹(112,114)以密封弹簧室。 另一实施例使用安装在凸缘壳体上的螺纹环116将头部密封到铸造凸缘壳体上以接合头部凸缘上的螺纹。
    • 4. 发明授权
    • Stroke indicator for an air-operated combination diaphragm spring brake
    • 气动组合隔膜弹簧制动器的行程指示器
    • US5649469A
    • 1997-07-22
    • US57988
    • 1993-05-05
    • William C. Pierce
    • William C. Pierce
    • B60T17/08F16D66/00F01B25/26
    • B60T17/083F16D2066/003
    • An air-operated combination diaphragm spring brake has a service chamber in tandem with a spring chamber. The service chamber being separated into an upper and lower section by a first elastomeric diaphragm. The spring chamber is separated into upper and lower sections by a second elastomeric diaphragm. A lever type stroke indicator is positioned within either or both the lower sections of the service chamber and the spring chamber.The stroke indicator in the service chamber pivots about a pin when contacted by a plate associated with the service push rod when the brakes are applied, resulting in a portion of the stroke indicator to extend beyond the periphery of the service chamber housing and provide a visual indication of the need to inspect the brake system.The stroke indicator in the lower section of the spring chamber also pivots about a pin when contacted by the pressure plate of the spring chamber resulting in a portion of the lever striking a pin which will then extend beyond the periphery of the service chamber housing, to provide a visual indication of the need to inspect the brake system. Simultaneously, another portion of the lever uncovers an opening to a passage between the lower section of the spring chamber and the atmosphere, which is sealed by a cap. The pressurized air within the lower section is great enough to blow away the cap to provide a second visual indication and the pressurized air exiting through the opening creates a high pitched whistle to provide an audible stroke indicator.
    • 气动组合隔膜弹簧制动器具有与弹簧室串联的维修室。 服务室通过第一弹性膜隔离成上部和下部。 弹簧室通过第二弹性膜隔离成上部和下部。 杠杆式行程指示器位于维修室的下部和弹簧室的一个或两个内。 当施加制动器时,当与制动器相关联的板接触时,在行程指示器围绕销枢转,导致行程指示器的一部分延伸超过操作室壳体的周边并提供视觉 指示需要检查制动系统。 当弹簧室的压板接触时,弹簧室的下部中的行程指示器也围绕销枢转,导致杠杆的一部分撞击销,该销将延伸超过服务室外壳的周边,直到 提供需要检查制动系统的可视指示。 同时,杠杆的另一部分露出通过弹簧室的下部与大气密封的通道的开口。 下部分内的加压空气足够大以吹走盖子以提供第二视觉指示,并且通过开口排出的加压空气产生高倾斜的口哨以提供可听的行程指示器。
    • 6. 发明授权
    • Spring brake actuator with spring force measurement
    • 具有弹簧力测量的弹簧制动器执行器
    • US5713238A
    • 1998-02-03
    • US569102
    • 1995-12-12
    • William C. PierceWilliam J. Hicks
    • William C. PierceWilliam J. Hicks
    • B60T17/08G01L1/04G01L5/28
    • B60T17/083
    • Measuring the force of a spring (28) in a spring brake actuator (10) comprising a housing (14) having an end wall (46), a spring plate (30) within the housing (14), the spring (28) being disposed between the spring plate (30) and the housing end wall (46) and a caging bolt (34) extending from the spring plate (30) through the housing end wall (46) and having a nut (44) thereon with a gauge between the caging bolt nut (44) and the housing (14). The gauge comprises a pressure-responsive element which detects the compressive force between the nut (44) and the housing (14) and generates a signal responsive thereto. An indicator (86) is coupled to the pressure-responsive element and visually displays the force on the spring (28) as a function of the compressive force signal. An embodiment of the gauge (50) comprises a body (52) having a bore (58), a piston (64) received within the bore (58) defining a chamber (74) between the piston (64) and the body (52) and a fluid (72) in the chamber (74).
    • PCT No.PCT / US94 / 09269 Sec。 371 1995年12月12日第 102(e)日期1995年12月12日PCT 1994年8月17日PCT PCT。 公开号WO96 / 05093 日期1996年2月22日测量弹簧制动器致动器(10)中的弹簧(28)的力,包括具有端壁(46)的壳体(14),在壳体(14)内的弹簧板(30) 弹簧(28)设置在弹簧板(30)和壳体端壁(46)之间,以及笼式螺栓(34),其从弹簧板(30)延伸穿过壳体端壁(46)并具有螺母(44) )上,其间具有在所述笼式螺栓螺母(44)和所述壳体(14)之间的量规。 该计量器包括一个检测螺母(44)和壳体(14)之间的压缩力的压力响应元件,并产生响应于此的信号。 指示器(86)耦合到压力响应元件并且根据压缩力信号在弹簧(28)上可视地显示力。 量规(50)的一个实施例包括具有孔(58)的主体(52),容纳在孔(58)内的活塞(64)),其限定在活塞(64)和主体(52)之间的腔室 )和腔室(74)中的流体(72)。
    • 7. 发明授权
    • Spring brake actuator and reaction plate anchor
    • 弹簧制动执行器和反作用板锚
    • US5526732A
    • 1996-06-18
    • US295778
    • 1995-02-10
    • Steven M. Stojic
    • Steven M. Stojic
    • B60T17/08F01B7/00
    • B60T17/086B60T17/083Y10T403/455
    • An anchor 100 is provided for anchoring a reaction plate 62 to an actuator rod 60 in a spring brake actuator 10 having a tubular actuator rod 60. The anchor 100 comprises an expandable plug 102 received within an interior space of the actuator rod 60, a bolt 110 extending from the reaction plate 62 through the plug 102 and a washer 108 having a threaded central aperture 81 threaded onto the bolt 110 whereby the plug 102 is compressed between the washer 108 and the reaction plate 62 to expand into engagement with an interior wall 120 of the actuator rod 60. Preferably, the plug 102 is formed of an elastomeric material.
    • PCT No.PCT / US94 / 05542。 371日期1995年2月10日 102(e)1995年2月10日PCT PCT 1994年5月17日PCT公布。 WO95 / 31363 PCT出版物 日期:1995年11月23日。锚100被提供用于将反作用板62锚固到具有管状致动杆60的弹簧制动器致动器10中的致动器杆60.锚固件100包括可膨胀塞102, 致动器杆60,从反作用板62穿过插头102延伸的螺栓110和具有螺纹连接到螺栓110上的螺纹中心孔81的垫圈108,由此将塞102压在垫圈108和反作用板62之间以使其膨胀 与致动器杆60的内壁120接合。优选地,塞子102由弹性体材料形成。
    • 8. 发明授权
    • Spring brake actuator with a pressure plate bearing for a caging tool
    • 弹簧制动器执行器,带有用于笼式工具的压力板轴承
    • US5345858A
    • 1994-09-13
    • US80414
    • 1993-06-21
    • William C. Pierce
    • William C. Pierce
    • F16D65/28B60T17/08F01B19/00
    • B60T17/086B60T17/083
    • A spring brake actuator, formed by a housing having an elastomeric diaphragm dividing the interior into two chambers, comprises a pressure plate adjacent the diaphragm in one of the chambers with a large force compression spring between the pressure plate and the housing. A hollow actuator rod is mounted within the chamber for reciprocal movement with the diaphragm and the pressure plate and receives a permanently installed caging tool extending through a housing aperture, a pressure plate aperture and into the hollow actuator rod. The pressure plate includes a bearing in the pressure plate aperture to facilitate reciprocal movement of the pressure plate over the caging tool.
    • 由壳体形成的弹簧制动器致动器具有将内部分成两个腔室的弹性体膜片,包括在压力板和壳体之间具有大的力压缩弹簧的一个腔室中与隔膜相邻的压力板。 腔室内安装有中空的致动器杆,用于与隔膜和压力板往复运动,并接收永久安装的笼式工具,其延伸穿过壳体孔,压力板孔并进入中空致动器杆。 压板包括压力板孔中的轴承,以便于压板在笼式工具上的往复移动。
    • 9. 发明授权
    • Fluid-operated brake actuator with spring chamber isolation
    • 具有弹簧室隔离的流体驱动制动器执行器
    • US5722311A
    • 1998-03-03
    • US433359
    • 1995-05-01
    • William C. PierceWilliam J. HicksSteven M. Stojic
    • William C. PierceWilliam J. HicksSteven M. Stojic
    • B60T13/50B60T13/38B60T15/00B60T17/08F16D65/28F01B7/00
    • B60T17/083
    • A brake actuator (10) for a vehicle comprises a service brake housing (14), a tandem spring brake housing (16) and a diaphragm (52), dividing the interior thereof into a first spring chamber (62) and a second spring chamber (63). In one embodiment, the first spring chamber (62) is completely sealed from the environment, being open only through a hollow actuator rod (56) connected to the diaphragm (52) and extending from the first spring brake chamber (62) into the service brake housing (14). A control valve (300) in the actuator rod (56) controls flow through the actuator rod (56) and is closed when the actuator rod (56) is retracted and also when the actuator rod (56) is extended to apply the brakes. The control valve (300) is open only as the diaphragm (52) and actuator rod (56) are moving. In an alternative embodiment, the spring chamber (63) has one-way vents (100) for releasing pressure therefrom and a control valve (120) in the actuator rod (56) for blocking flow therethrough when the actuator rod (56) is in a retracted position.
    • PCT No.PCT / US94 / 08421 Sec。 371日期:1995年5月1日 102(e)日期1995年5月1日PCT 1994年7月25日PCT公布。 公开号WO95 / 25030 日期1995年9月21日用于车辆的制动致动器(10)包括行车制动器壳体(14),串联弹簧制动器壳体(16)和隔膜(52),将其内部分成第一弹簧室(62) 和第二弹簧室(63)。 在一个实施例中,第一弹簧室(62)与环境完全密封,仅通过连接到隔膜(52)并从第一弹簧制动室(62)延伸到其中的中空致动器杆(56)打开 制动器壳体(14)。 致动杆(56)中的控制阀(300)控制通过致动器杆(56)的流动,并且当致动器杆(56)缩回时以及致动器杆(56)延伸以施加制动器时关闭。 只有当隔膜52和致动器杆56移动时,控制阀300才打开。 在替代实施例中,弹簧室(63)具有用于释放压力的单向通气口(100)和致动器杆(56)中的控制阀(120),用于当致动器杆(56)处于 缩回位置。