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1. 发明授权

US3985384A Hydraulic apparatus for grab device 失效
标题翻译：用于抓斗装置的液压装置
公开(公告)号：US3985384A
公开(公告)日：1976-10-12
申请号：US617990
申请日：1975-09-29
申请人： Oscar W. Hahn
发明人： Oscar W. Hahn
IPC分类号： B66C3/16
CPC分类号： B66C3/16
摘要： A new and improved apparatus for a grapple or clam shell bucket having a plurality of pivoted tines or bucket elements which are actuated to a closed or holding position by a first predetermined hydraulic pressure and which are held in closed position by a second predetermined pressure, and wherein the second predetermined pressure has a value lower than the first predetermined pressure to provide sufficient flexibility to a hydraulic hose supplying the hydraulic pressures to facilitate reeling the hose while maintaining the grapple or clam shell bucket in closed position.
摘要翻译：一种用于抓斗或蛤壳式桶的新的和改进的装置，具有多个枢转尖齿或铲斗元件，其通过第一预定液压被致动到关闭或保持位置并且以第二预定压力保持在关闭位置，以及其中所述第二预定压力具有低于所述第一预定压力的值，以向提供所述液压压力的液压软管提供足够的灵活性，以便于在将所述抓斗或蛤壳式铲斗保持在关闭位置的同时卷绕所述软管。

2. 发明授权

US4381872A Remote controlled clamshell bucket apparatus and method of using same 失效
标题翻译：遥控蛤壳式铲斗装置及其使用方法
公开(公告)号：US4381872A
公开(公告)日：1983-05-03
申请号：US248004
申请日：1981-03-26
申请人： Oscar W. Hahn
发明人： Oscar W. Hahn
IPC分类号： B66C3/06 , B66C3/16 , E02F3/413
CPC分类号： B66C3/06 , B66C3/16 , E02F3/413 , Y10S294/905
摘要： The disclosed invention relates to a single hoist line operated clamshell bucket apparatus and method of use. The bucket apparatus is loaded in the usual manner at a first location for transporting bulk material to a second location where it is discharged. The bucket is discharged by sensing the presence of a preselected radio command signal that is controlled by the crane operator. The sensed radio signal operates a shut-off valve in a hydraulic controlled bucket latching system to release hydraulic fluid to permit discharge of the clamshell bucket.
摘要翻译：所公开的发明涉及一种单葫芦线操作蛤壳式铲斗装置及其使用方法。铲斗装置以通常的方式装载在第一位置，用于将散装材料运送到其排出的第二位置。通过感测由起重机操作者控制的预选无线电命令信号的存在来释放铲斗。感测到的无线电信号在液压控制的桶闩锁系统中操作截止阀以释放液压流体以允许蛤壳式铲斗的排出。

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