公开(公告)号：US3795177A

公开(公告)日：1974-03-05

申请号：US3795177D

申请日：1971-11-04

Applicant: CATERPILLAR TRACTOR CO

Inventor： CRYDER J ,  FREEDY A

IPC: F15B11/024 ,  F15B11/16 ,  F15B13/02

CPC classification number: F15B11/024 ,  F15B2011/0243 ,  F15B2211/30525 ,  F15B2211/3058 ,  F15B2211/3111 ,  F15B2211/3144 ,  F15B2211/31588 ,  F15B2211/324 ,  F15B2211/7128 ,  F15B2211/75

Abstract: A system having a manually operated control valve for directing pressurized fluid to a pair of fluid motors while receiving fluid discharged therefrom also has a fast motion valve for causing the motors to outrun the fluid supplied through the control valve by returning a portion of the discharged fluid directly to the motors. The circuit shifts to provide fast motion on detecting a predetermined flow rate between the control valve and the motors. As the operator can modulate this flow rate, the fast motion is always subject to operator control. To assure operator control under all conditions, the fast motion valve is spring biased to the unoperated position and return of a portion of the motor discharge flow to the control valve is a necessary condition for operation of the fast motion valve. The system is further arranged to prohibit fast motion, under any condition, during reversed motion of the motors.

Abstract translation: 具有用于将加压流体引导到一对流体马达同时接收从其排出的流体的手动控制阀的系统还具有快速运动阀，用于使马达超出通过控制阀供应的流体，通过返回一部分排出的流体 直接到电机。 在检测控制阀和电动机之间的预定流量时，电路移动以提供快速运动。 由于操作者可以调节此流速，因此快速运动始终受操作员的控制。 为了在所有条件下确保操作者的控制，快动阀被弹簧偏压到未操作位置，并且马达排出流的一部分返回到控制阀是快速运动阀的操作的必要条件。 该系统进一步布置成在马达的反向运动期间禁止任何条件下的快速运动。

公开(公告)号：US3847451A

公开(公告)日：1974-11-12

申请号：US31187772

申请日：1972-12-04

Applicant: CATERPILLAR TRACTOR CO

Inventor： FREEDY A ,  MILLER C ,  SIMPSON F

IPC: B62D55/26 ,  B62D55/28

CPC classification number: B62D55/28

Abstract: A track shoe has a base portion defining a substantially flat lower surface and a pair of ribs extending from either side thereof, each pair of ribs defining a pocket therebetween. The lower surfaces of the ribs are upwardly angled with respect to the lower surface of the base portion, and the edges connecting the lower surfaces of the ribs with the lower surface of the base portion, and also the forward and rearward edges of said lower surface of the base portion of the track shoe are smoothly contoured and curved to reduce damage to hard surfaces. Meanwhile, the ribs provide traction for soft ground conditions.

Abstract translation: 轨道靴具有限定基本平坦的下表面的基部和从其两侧延伸的一对肋，每对肋在其间限定一个凹穴。 肋的下表面相对于基部的下表面向上成角度，并且将肋的下表面与基部的下表面连接的边缘以及所述下表面的前后边缘 轨道靴的基部的平滑轮廓和弯曲以减少对硬表面的损伤。 同时，肋条为软地面条件提供牵引力。

公开(公告)号：US3846983A

公开(公告)日：1974-11-12

申请号：US41682773

申请日：1973-11-19

Applicant: CATERPILLAR TRACTOR CO

Inventor： FREEDY A ,  RISK N

IPC: F15B1/26 ,  F15B1/06

CPC classification number: F15B1/265

Abstract: A hydraulic fluid reservoir pressurization arrangement for a closed hydraulic system having a reservoir for containing a variable volume of hydraulic fluid below its full capacity so as to provide a variable air space therein including, an internal combustion engine having a forced air intake system providing a source of air under pressure, and a conduit connecting the source of pressurized air with the variable air space of the reservoir to insure a continuous supply of hydraulic fluid to the hydraulic system so as to avoid any cavitation to prevent interruptions in the flow of such fluid to the system.

Abstract translation: 一种用于封闭液压系统的液压储油器加压装置，其具有用于容纳可变体积的液压流体低于其全部容量的储存器，以便在其中提供可变空气空间，其中包括具有强制进气系统的内燃机， 的压缩空气，以及将压缩空气源与储存器的可变空气空间连接的导管，以确保向液压系统连续供应液压流体，以避免任何气蚀，以防止这种流体流动中断 系统。