Roller drive-type compound vehicle wheel alignment tester

Claim 2

A roller drive-type compound vehicle wheel alignment tester comprising a pair of wheel alignment measuring units each including detection rollers adapted to rotate in contact with sides of vehicle wheels, characterized in that each of said wheel alignment measuring units comprises a horizontally movable and tiltable cross-shaped detection roller support member having four arms, two toe-in detection rollers supported respectively on two of said arms of the roller support member, two camber detection rollers supported respectively on the remaining two arms of said roller support member, with the projection of the axes of said two toe-in detection rollers intersecting the projection of the axes of said two camber detection rollers and with the projections of the axes of said toe-in and camber detection rollers intersecting the projection of the axis of one vehicle wheel to be measured, said toe-in detection rollers or camber detection rollers being rotatably mounted on said support member and the other detection rollers being rotatably mounted on said support member for movement by a small angular distance so as to contact one side of said vehicle wheel under a uniform pressure, a horizontally movable frame tiltably supporting said detection roller support member for movement therewith toward and away from said vehicle wheel under a certain force, said horizontally movable frame having a vertical shaft, a horizontally rotatable frame mounted in said horizontally movable frame for horizontal rotation about said vertical shaft and having a horizontal shaft about which said roller support member is tiltable, means for indicating inclination angle of said roller support member with respect to said horizontally rotatable frame and means for indicating horizontal rotation angle of said roller support member with respect to said horizontally movable frame.

Claim 3

A roller drive-type compound vehicle wheel alignment tester comprising a pair of wheel alignment measuring units each including detection rollers adapted to rotate in contact with sides of vehicle wheels, characterized in that each of said wheel alignment measuring units comprises a horizontally rotatable and tiltable cross-shaped detection roller support member having four arms, two toe-in detection rollers respectively supported on two colinear arms of the roller support member, two camber detection rollers supported respectively on the remaining two arms of said roller support member, with the projection of the axes of said two toe-in detection rollers intersecting the projection of the axes of said two camber detection rollers and with the projections of the axes of said detection rollers intersecting the projection of the axis on one vehicle wheel to be measured, said toe-in detection rollers or camber detection rollers Being rotatably mounted on said roller support member and the other detection rollers being rotatably mounted on said roller support member for movement by a small distance so as to contact one side of said vehicle wheel under a uniform pressure, a horizontally movable frame tiltably supporting said detection roller support member for movement therewith toward and away from said vehicle wheel under a certain force, said horizontally movable frame having a horizontal shaft, a tiltable frame, mounted in said horizontally movable shaft for tilting movement about said horizontal shaft and having a vertical shaft about which said roller support member is horizontally rotatable, means for indicating inclination angle of said roller support member with respect of said horizontally movable frame and means for indicating rotation angle of said roller support member with respect to said tiltable frame.

Claim 4

A roller drive-type compound vehicle wheel alignment tester comprising a pair of wheel alignment measuring units each including detection rollers adapted to rotate in contact with sides of vehicle wheels, characterized in that each of said wheel alignment measuring units comprises a horizontally rotatable and tiltable cross-shaped detection roller support member having four arms, two toe-in detection rollers respectively supported on two colinear arms of the roller support member, two camber detection rollers supported respectively on the remaining two arms of said roller support member, with the projection of the axes of said two toe-in detection rollers intersecting the projection of the axes of said two camber detection rollers and with the projections of the axes of said detection rollers intersecting the projection of the axis on one vehicle wheel to be measured, said toe-in detection rollers or camber detection rollers Being rotatably mounted on said roller support member and the other detection rollers being rotatably mounted on said roller support member for movement by a small distance so as to contact one side of said vehicle wheel under a uniform pressure, a horizontally movable frame tiltably supporting said detection roller support member for movement therewith toward and away from said vehicle wheel under a certain force, said horizontally movable frame having a horizontal shaft, a tiltable frame, mounted in said horizontally movable shaft for tilting movement about said horizontal shaft and having a vertical shaft about which said roller support member is horizontally rotatable, means for indicating inclination angle of said roller support member with respect of said horizontally movable frame and means for indicating rotation angle of said roller support member with respect to said tiltable frame.

Claim 5

A roller drive-type compound vehicle wheel alignment tester comprising a pair of wheel alignment measuring units each including detection rollers adapted to rotate in contact with sides of vehicle wheels, characterized in that each of said wheel alignment units comprises a horizontally movable and tiltable cross-shaped detection roller support member having four arms, two toe-in and two camber detection rollers supported respectively on opposing arms of the roller support member with the projection of the axes of said two toe-in detection rollers intersecting the projection of the axes of said two camber detection rollers and with the projections of the axes of said toe-in and camber detection rollers intersecting the projection of the axis of one vehicle wheel to be measured, said toe-in detection rollers or camber detection rollers being rotatably mounted on said roller support member and the other detection rollers being rotatably mounted on said roller support member for movement by a small distance so as to contact one side of said vehicle wheel under a uniform pressure, a horizontally movable frame tiltably supporting said detection roller support member for movement therewith toward and away from said vehicle under a certain force, said horizontally movable frame having a vertical shaft, a horizontally rotatable frame mounted in said horizontally movable frame for horizontal rotation about said vertical shaft and having a horizontal shaft about which said roller support member is tiltable, means for indicating inclination angle of said roller support member with respect to said horizontally rotatable frame and means for indicating horizontal rotation angle of said roller support member with respect to said horizontally movable frame, and said tester further comprises a roller drive motor for determining horsepower loss in rotary parts of said tester and means for detecting reaction torque from said roller drive motor.

Claim 6

A roller drive-type compound vehicle wheel alignment tester comprising a pair of wheel alignment measuring units each including detection rollers adapted to rotate in contact with sides of vehicle wheels, characterized in that each of said wheel alignment units comprises a horizontally movable and tiltable cross-shaped detection roller support member having four arms, two toe-in and two camber detection rollers supported respectively on opposing arms of the roller support member with the projection of the axes of said two toe-in detection rollers intersecting the projection of the axes of said two camber detection rollers and with the projections of the axes of said toe-in and camber detection rollers intersecting the projection of the axis of one vehicle wheel to be measured, said toe-in detection rollers or camber detection rollers being rotatably mounted on said roller support member and the other detection rollers being rotatably mounted on said roller support member for movement by a small distance so as to contact one side of said vehicle wheel under a uniform pressure, a horizontally movable frame tiltably supporting said detection roller support member for movement therewith toward and away from said vehicle under a certain force, said horizontally movable frame having a vertical shaft, a horizontally rotatable frame mounted in said horizontally movable frame for horizontal rotation about said vertical shaft and having a horizontal shaft about which said roller support member is tiltable, means for indicating inclination angle of said roller support member with respect to said horizontally rotatable frame and means for indicating horizontal rotation angle of said roller support member with respect to said horizontally movable frame, and said tester further comprises a roller drive motor for determining horsepower loss in rotary parts of said tester and means for detecting reaction torque from said roller drive motor.