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Driver training apparatus for simulating skid conditions of an automobile

  • US 4,700,798 A
  • Filed: 08/14/1984
  • Issued: 10/20/1987
  • Est. Priority Date: 01/14/1983
  • Status: Expired due to Term
First Claim
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1. An apparatus for enabling regulatable alteration of the frictional grip between the wheels of a car and a substructure such as a road, comprising a separate lifting frame (10) carried by four castor wheels (18, 18A, 18B) and a plurality of supporting means (21, 22, 24, 25) for bearing against predetermined places (23, 33) on the underside of the car chassis in question after placing the frame under the car, the mutual spacing between the castor wheels being such that after placing the frame under the car, the castor wheels are each in the area around a car wheel (19), and selectively controlled operating means (29, 38, 43, 44, 47, 50) on the frame for exerting any selected one of a plurality of different lifting pressures on the car relative the substructure such that at least one of the car wheels has a contact pressure against the substructure reduced to a corresponding one of a plurality of different reduced contact pressures, thereby to simulate driving on a more or less slippery driving surface.

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