초록 ▼

A device for establishing a reference datum of a wheeled vehicle comprises a first element operably rotatably mounted to a hub of an axle of the vehicle, the first element having a first axis of rotation, a second element having one end rotatably mounted to the first element so as to have a second a

A device for establishing a reference datum of a wheeled vehicle comprises a first element operably rotatably mounted to a hub of an axle of the vehicle, the first element having a first axis of rotation, a second element having one end rotatably mounted to the first element so as to have a second axis of rotation perpendicular to the first axis of rotation of the first element, and a laser mounted to the other end of the second element. The laser is oriented relative to the second element so as to project a laser plane either parallel to a longitudinal axis of the second element to thereby establish a vertical datum for the vehicle, or perpendicular to the longitudinal axis of the second element to thereby establish a horizontal datum for the vehicle.

대표청구항 ▼

[ What is claimed is:] [1.]1. A device for establishing a reference datum of a wheeled vehicle, said apparatus comprising:a first element adapted to be operably rotatably mounted to a hub of an axle of the vehicle, said first element having a first axis of rotation;a second element having one end ro

[ What is claimed is:] [1.]1. A device for establishing a reference datum of a wheeled vehicle, said apparatus comprising:a first element adapted to be operably rotatably mounted to a hub of an axle of the vehicle, said first element having a first axis of rotation;a second element having one end rotatably mounted to said first element so as to have a second axis of rotation perpendicular to said first axis of rotation of said first element; anda laser mounted to the other end of said second element, said laser being oriented relative to said second element so as to project a laser plane at least one of: i) parallel to a longitudinal axis of said second element to thereby establish a vertical datum for the vehicle, and ii) perpendicular to the longitudinal axis of said second element to thereby establish a horizontal datum for the vehicle.