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公开(公告)号：US5241765A
公开(公告)日：1993-09-07
申请号：US837135
申请日：1992-02-18
CPC分类号： E02F9/2841 , E02F3/60 , E02F9/2883
摘要： A lock assembly for a surface subject to abrasive wear including a base element and a wear element coupled either by conforming T-shaped elements or dovetails and which includes a lock resiliently urged against an integral keeper in the base or wear element.
摘要翻译： 用于经受磨损磨损的表面的锁组件，包括基体元件和通过适形的T形元件或燕尾形连接的磨损元件，并且其包括弹性地推靠在基座或磨损元件中的整体式保持器的锁。
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公开(公告)号：US4987935A
公开(公告)日：1991-01-29
申请号：US461358
申请日：1990-01-05
IPC分类号： B27B5/14 , A01G23/091
CPC分类号： A01G23/091 , Y10S83/928 , Y10T83/9329
摘要： A tree saw includes a frame adapted to be attached to the boom of a prime mover, a tree clamping mechanism on the frame, and a carriage assembly on the frame below the clamping mechanism. The carriage assembly includes a generally plate-like chassis, a generally U-shaped bulkhead upstanding from the chassis and providing a recessed base portion and forwardly-extending arm portions, and a slide mechanism on the arm portions. A rail mechanism on the frame receives the slide mechanism for reciprocating movement of the carriage assembly. A hydraulic cylinder assembly interconnects the bulkhead and frame for reciprocating the carriage assembly. An annular rim member rotatably mounted on the chassis has a geared inner circumference and a toothed outer circumference projecting forwardly of the base portion. A motor-driven pinion mechanism on the chassis engages the rim member inner circumference to rotate the rim member.
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公开(公告)号：US4358147A
公开(公告)日：1982-11-09
申请号：US210368
申请日：1980-11-25
申请人： Emory D. Hungerford
发明人： Emory D. Hungerford
IPC分类号： B66C3/16
CPC分类号： B66C3/16
摘要： A mounting and actuating apparatus for the tongs of a grapple wherein a pair of pulleys carrying the tongs are interconnected by cable means extending between the pulleys in generally figure eight configuration, one embodiment teaching driving one pulley by a fluid pressure cylinder positioned between the pulleys and utilizing axially offset cable links, the other embodiment including a multiplying linkage between the two tongs.
摘要翻译： 用于抓斗的夹钳的安装和致动装置，其中一对带轮夹持钳子通过在皮带轮之间延伸的绳索装置互相连接，一般为图8所示的结构，一个实施例教导了一个定位在滑轮和 利用轴向偏移的电缆链路，另一个实施例包括两个钳之间的乘法连接。
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公开(公告)号：US4723639A
公开(公告)日：1988-02-09
申请号：US900797
申请日：1986-08-27
申请人： Emory D. Hungerford
发明人： Emory D. Hungerford
CPC分类号： F16F9/145
摘要： A hydraulic snubber suitable for a skidding grapple or the like in which a twisted figure eight housing is provided to oppose free swinging in two mutually perpendicular horizontal directions, each portion of the figure eight having a cylinder housing with a rotor, each rotor having radially extending vanes. At least one vane has a flexible extension including at least two orifices equipped with a pocket for adjustably limiting the flow of hydraulic fluid to each respective side of the vane. The cylinder housing is equipped with a safety relief valve so that hydraulic fluid can bypass a vane to prevent excessive pressure buildup on one side of the vane.
摘要翻译： 一种液压缓冲器，其适用于打滑抓斗等，其中设有扭曲图形八壳体以在两个相互垂直的水平方向上自由摆动，图8的每个部分具有带转子的气缸壳体，每个转子具有径向延伸 叶片。 至少一个叶片具有柔性延伸部，其包括至少两个配备有口袋的孔口，用于可调节地限制液压流体流向叶片的每个相应侧面。 气缸壳体配有安全释放阀，使得液压流体可以绕过叶片以防止在叶片的一侧上产生过大的压力。
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公开(公告)号：US4609081A
公开(公告)日：1986-09-02
申请号：US630516
申请日：1984-07-12
申请人： Emory D. Hungerford
发明人： Emory D. Hungerford
IPC分类号： F16F9/14
CPC分类号： F16F9/145 , Y10T403/25 , Y10T403/32591
摘要： A hydraulic snubber suitable for a skidding grapple or the like in which a twisted figure eight housing is provided to oppose free swinging in two mutually perpendicular horizontal directions, each portion of the figure eight body having a cylinder housing a rotor with each rotor and cylinder having radially extending vanes equipped with flexible, orifice equipped vane extensions.
摘要翻译： 一种液压缓冲器，其适用于打滑抓斗等，其中设有扭曲图形八壳体以相对于两个相互垂直的水平方向自由摆动，图形八体的每个部分具有容纳转子的气缸，每个转子和气缸具有 径向延伸的叶片配备有柔性，孔口配备的叶片延伸部。
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