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Vehicle steering mechanisms

  • US 4,570,965 A
  • Filed: 10/11/1983
  • Issued: 02/18/1986
  • Est. Priority Date: 02/10/1982
  • Status: Expired due to Fees
First Claim
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1. A steering mechanism for a long vehicle having leading and trailing ends and comprising:

  • a first steering device located towards the leading end,a steering member located towards the trailing end and so controlled by a second steering device located towards the trailing end that the steering member will act in a steering mode in which it positively steers that end of the vehicle or in a following mode in which it follows an existing direction of motion which is in a straight line or follows an arc of constant radius;

    a linkage between the first and second steering devices;

    actuating means within that linkage, and responsive both to a first angle which the first device makes with the fore-and-aft centreline of the vehicle and a second angle which the second device makes the same line;

    said actuating means operating to cause the second device to lock the steering member in its following mode whenever the second angle is less than a predetermined function of the first angle, but operating under other conditions to cause the second device to make the steering member operate in its steering mode in a manner which tends to make the second device progress to a condition wherein equality between the second angle and that function of the first angle is achieved.

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