公开(公告)号：US3741245A

公开(公告)日：1973-06-26

申请号：US3741245D

申请日：1971-06-09

申请人： WEST B

发明人： WEST B

IPC分类号： F16K31/122 ,  F16K11/00

CPC分类号： F16K31/1223 ,  Y10T137/86944 ,  Y10T137/87225

摘要： A valve assembly is described of the so-called block and vent type wherein the valve is normally closed with the downstream side vented. When a pilot pressure is applied, it first closes the vent and then opens the valve partially. On application of a second pilot signal from another source or from a suitable time delay network, the valve opens fully. On release of the pilot pressures, the valve closes first and then opens the downstream vent.

公开(公告)号：US3833837A

公开(公告)日：1974-09-03

申请号：US38096673

申请日：1973-07-20

申请人： WEST B

发明人： WEST B

IPC分类号： H05K7/20 ,  H01L1/12

CPC分类号： H05K7/20909

摘要： Disclosed is a forced convection cooling apparatus for mounting and cooling electronic components. Modules carrying closely spaced fins are adapted for mounting within an enclosure in a repetitive gridwork pattern leaving the electronic devices exposed on the downstream end of the enclosure.

公开(公告)号：US3804178A

公开(公告)日：1974-04-16

申请号：US29612472

申请日：1972-10-10

申请人： WEST B

发明人： WEST B

IPC分类号： E02F3/76 ,  E02F9/28 ,  A01B49/02

CPC分类号： E02F3/786 ,  E02F9/2866

摘要： A dirt moving apparatus for leveling the spoil banks left after a strip pit or surface mining operation is provided for attachment to a tractor and includes a blade which engages the earth at an angle to the path of travel of the tractor and an elongated, rearwardly extending, laterally adjustable landside for controlling the side draft of the blade. An elongated, vertical roller is disposed adjacent the trailing end of the landside and extends beyond the planar outer surface of the same for engagement with the earth thereby reducing the friction that would otherwise be encountered as a result of the landside bearing against the face of the cut made by the blade. Positioned adjacent the rearmost end of the blade is a horizontally disposed rotatable disc having a plurality of upright vanes for scattering and redistributing the dirt as it is being displaced by the blade, thereby effecting a leveling of the spoil banks. The vanes may be provided with freely swingable outer sections or the like are encountered, thus avoiding damage to the disc and vane assembly. The apparatus is tiltable about an axis parallel to the path of travel of the tractor for insuring that proper engagement with a bank is maintained as the tractor moves longitudinally along the sideslope thereof.

摘要翻译： 用于调整在条坑或表面采矿操作之后留下的弃土堤的污物移动装置用于附接到拖拉机，并且包括一个与拖拉机的行进路线成角度地接合地面的叶片和一个细长的，向后延伸的 侧向可调节的边缘，用于控制叶片的侧面吃水。 细长的垂直辊子设置在靠近陆面的后端附近并且延伸超过其平面的外表面以与地面接合，从而减少由于靠背的面的陆侧轴承而将遇到的摩擦 由刀片切割。 位于叶片的最后端附近的水平设置的可旋转盘具有多个直立叶片，用于在灰尘被叶片移位时散布并重新分布污物，从而实现弃土堤的调平。 叶片可以设置有自由摆动的外部部分等，从而避免损坏盘片和叶片组件。 该装置可围绕平行于拖拉机行进路径的轴线倾斜，以确保随着拖拉机沿其边坡纵向移动，可以保持与堤坝的适当接合。

公开(公告)号：US3788350A

公开(公告)日：1974-01-29

申请号：US3788350D

申请日：1973-04-09

申请人： WEST B

发明人： WEST B

IPC分类号： F16K31/122 ,  F15B11/08

CPC分类号： F16K31/1223 ,  Y10T137/87225

摘要： A valve assembly is described of the so-called block and vent type wherein the valve is normally closed with the downstream side vented. When a pilot pressure is applied, it first closes the vent and then opens the valve partially. On application of a second pilot signal from another source or from a suitable time delay network, the valve opens fully. On release of the pilot pressures, the valve closes first and then opens the downstream vent.

摘要翻译： 描述了所谓的块式和排气型的阀组件，其中阀门通常在下游侧排气时闭合。 当施加先导压力时，首先关闭排气口，然后部分打开阀门。 在应用来自另一个源或合适的时间延迟网络的第二导频信号时，阀完全打开。 释放先导压力后，阀先关闭，然后打开下游通风口。