公开(公告)号：US4860844A

公开(公告)日：1989-08-29

申请号：US187109

申请日：1988-04-29

申请人： Walter K. O'Neil

发明人： Walter K. O'Neil

IPC分类号： B62D6/00 ,  B62D5/00 ,  B62D5/04 ,  B62D113/00

CPC分类号： B62D5/003 ,  B62D5/006 ,  B62D5/0457

摘要： A power steering system suitable for large off-highway and other vehicles has no mechanical linkages or hydraulic connections entering into the driver's cab. Torque demand signals are produced in an electromechanical torque sensor that measures the deflections of a torsional spring. The system provides synchronization between steering and steered wheels upon starting, without initial corrective motion of either member. During operation, the direction of the steered wheels does not drift with respect to the position of the steering wheel. In the event of certain types of failures of its primary steering system the apparatus automatically changes over to an open-loop secondary steering system that is controllable by the same steering wheel, and that has components in common with the closed-loop primary system.

公开(公告)号：US4072927A

公开(公告)日：1978-02-07

申请号：US768810

申请日：1977-02-15

申请人： Walter K. O'Neil

发明人： Walter K. O'Neil

IPC分类号： B60C23/04 ,  B60C23/02

CPC分类号： B60C23/0428 ,  B60C23/043

摘要： Low pressure in a vehicle tire is detected by a system including an electronic circuit which activates a warning light in response to momentary phase shift between two cyclic signals. The system includes an oscillator which produces the first of the two cyclic signals, a parallel resonant circuit excited by the first signal and producing the second of the two cyclic signals, a coil mounted to rotate with the tire and to pass through an electromagnetic field produced by an inductor in the resonant circuit and operative to momentarily shift the phase of the second signal relative to the phase of the first signal when a pressure operated switch in the tire closes and shorts the coil, a detector which produces an output signal that momentarily changes in response to the momentary phase shift, and a warning light that is activated in response to the momentary change in the output signal.

摘要翻译： 通过包括响应于两个循环信号之间的瞬时相移来激活警告灯的电子电路的系统来检测车辆轮胎中的低压。 该系统包括产生两个循环信号中的第一个的振荡器，由第一信号激励并产生两个循环信号中的第二个的并联谐振电路，安装成与轮胎一起旋转并通过产生的电磁场的线圈 通过谐振电路中的电感器，并且当轮胎中的压力操作开关关闭并使线圈短路时，可操作地相对于第一信号的相位瞬间移动第二信号的相位，产生瞬时变化的输出信号的检测器 响应于瞬时相移，以及响应于输出信号的瞬时变化而激活的警告灯。