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1. 发明授权

US3771837A Three slope proportioning valve 失效
标题翻译：三斜比例阀
公开(公告)号：US3771837A
公开(公告)日：1973-11-13
申请号：US3771837D
申请日：1971-12-20
申请人： WEATHERHEAD CO
发明人： BUDZICH T
IPC分类号： B60T8/26 , B60T11/34 , B60T13/00
CPC分类号： B60T11/34 , B60T8/26
摘要： A three slope proportioning valve for a motor vehicle hydraulic brake system is normally open to permit free fluid flow from an inlet port to an outlet port below a first predetermined inlet port pressure. At the first predetermined pressure, a first valve head is displaced by operation of a differential area piston to a position to cooperate with a valve seat member. the first valve head throttles fluid flow from the inlet port to the outlet port and maintains a first predetermined proportional relation between increases in inlet and outlet port pressure when the inlet port pressure is greater than the first predetermined pressure and less than a second predetermined pressure. At the second predetermined pressure a second valve head moves toward the valve seat and the first valve head moves away from the valve seat. The second valve head cooperates with the valve seat to throttle fluid flow from the inlet port to the outlet port and maintain a second predetermined proportional relation between increases in inlet port pressure and increases in outlet port pressure above the second predetermined pressure level.
摘要翻译：用于机动车辆液压制动系统的三斜比例阀通常是开放的，以允许自由流体从第一预定入口压力以下的入口端口到出口端口流动。在第一预定压力下，通过差动区域活塞的操作将第一阀头移位到与阀座构件配合的位置。当入口压力大于第一预定压力且小于第二预定压力时，第一阀头节流流体从入口端口到出口端口并保持入口和出口压力增加之间的第一预定比例关系。在第二预定压力下，第二阀头向阀座移动，第一阀头从阀座移开。第二阀头与阀座配合以节流从入口到出口的流体流动，并且保持进口端口压力增加和出口端口压力增加到第二预定压力水平之上的第二预定比例关系。

2. 发明授权

US3746301A Valve stem friction device 失效
标题翻译：阀门阻力装置
公开(公告)号：US3746301A
公开(公告)日：1973-07-17
申请号：US3746301D
申请日：1970-11-20
申请人： WEATHERHEAD CO
发明人： BUDZICH T , BROWNE F
IPC分类号： F16B21/20 , F16K1/32 , F16K31/50 , F16D7/00 , F16K41/04
CPC分类号： F16B21/20 , F16K1/32 , F16K31/50
摘要： A braking and locking structure for frictionally supporting a shaft, such as a valve stem, for axial and rotational movement in a housing comprising a cylindrical surface on the periphery of the shaft, a friction sleeve in frictional engagement with the cylindrical surface and axially located between abutment washers in the housing. The friction sleeve is plastically deformed in a radially outward direction for engagement with the cylindrical surface with a frictional force independent of the actual amount of radial deformation from its original nominal size and, additionally, the sleeve is provided with an axially extending lip plastically deformed to allow the sleeve to assume a length equal to the spacing between the abutment washers determined by the dimension of various components to eliminate axial lost motion of the friction sleeve.

3. 发明授权

US3721473A Three slope proportioning valve 失效
标题翻译：三斜比例阀
公开(公告)号：US3721473A
公开(公告)日：1973-03-20
申请号：US3721473D
申请日：1971-12-20
申请人： WEATHERHEAD CO
发明人： BUDZICH T
IPC分类号： B60T8/26 , B60T11/34
CPC分类号： B60T8/26 , B60T11/34
摘要： A three slope proportioning valve for a motor vehicle hydraulic brake system is disclosed. The valve is normally open to permit free fluid flow from the inlet port to the outlet port below a first predetermined inlet port pressure. At the first predetermined pressure, a differential area piston is displaced and engages a floating valve member to isolate the inlet port from the outlet port. The differential area piston and the valve member then move together to decrease the outlet port volume and maintain increases in outlet port pressure above the predetermined pressure in a first predetermined proportional relation to increases in inlet port pressure up to a second predetermined inlet port pressure level. At the second predetermined pressure, the floating valve member is stopped against further movement, and the differential area piston moves away from the valve member to establish throttled fluid pressure communication between the inlet port and the outlet port to maintain further increases in outlet port pressure in a second predetermined proportional relation to further increases in inlet port pressure.

4. 发明授权

US3782785A Brake anti-skid system 失效
标题翻译：制动防滑系统
公开(公告)号：US3782785A
公开(公告)日：1974-01-01
申请号：US3782785D
申请日：1972-06-05
申请人： WEATHERHEAD CO
发明人： BUDZICH T
IPC分类号： B60T8/42 , B60T8/74 , B60T8/12
CPC分类号： B60T8/425 , B60T8/74
摘要： An anti-skid device for mechanically sensing a skid condition of a wheeled vehicle and for automatically regulating braking force to optimize braking effect. The device comprises an enclosed housing in which is mounted linear and rotational inertia bodies arranged to produce balanced forces in a normal braking situation and unbalanced forces in a skid condition. During a skid, a vacuum control circuit having a control port in the housing is operated by the unbalanced force to relieve braking pressure at the controlled wheels to prevent wheel lock-up and consequent loss of braking efficiency. Illustrated modifications include slip clutch means to protect the sensing apparatus from excessive forces under extreme wheel acceleration or deceleration and means to maintain a brake pressure retarding signal beyond a point at which wheel deceleration is returned to proportionality with linear deceleration to allow the controlled wheels to reach synchronous speed to maximize braking effect.
摘要翻译：一种防滑装置，用于机械地感测轮式车辆的滑行状态并自动调节制动力以优化制动效果。该装置包括封闭的壳体，其中安装有线性和旋转惯性体，其布置成在正常制动情况下产生平衡的力并且在滑动状态下产生不平衡的力。在滑行期间，具有壳体中的控制端口的真空控制电路通过不平衡的力来操作，以减轻受控车轮处的制动压力，以防止车轮锁定并随之丧失制动效率。说明性的修改包括滑动离合器装置，用于保护感测装置免受极端车轮加速或减速时的过大力，并且保持制动压力延迟信号超过车轮减速度的点恢复到与线性减速成正比的方式的装置，以允许受控车轮到达同步速度最大化制动效果。

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