Patent ID: 6050547
Filing Date: 2000-04-18
Classification: B66F

Abstract:
An articulated jack for raising a vehicle body, the jack comprising:a support base (1), an upper gripping device (2) for contacting an edge of the vehicle body, a first pivot joint (13) including a nut (11), and a second pivot joint (14) including a bar (12);a spindle passing through the nut (11) on the first pivot joint (13) and connected to the bar (12) on the second pivot joint (14);four arms (3,4,5,6), a pair of which are connected to each of the first pivot joint (13), the second pivot joint (14), the support base (1), and the upper gripping device (2);the arms including two wider outer arms and two inner arms, and further comprisinga lower outer arm (3) hinged to the support base (1) and the second pivot joint (12),an upper outer arm (4) hinged to the gripping device and the first pivot joint (13),an upper inner arm (5) hinged to the gripping device and the second pivot joint, anda lower inner arm (6) hinged to the support base and the first pivot joint;each of the arms including a respective outer end adjacent to a respective pivot joint, and a respective inner end adjacent to the support base or to the upper gripping device;the outer arms (3,4) each including a respective outer U-shaped cross section including a base (26) over a portion in close proximity to the outer ends thereof, and each including no base in proximity to the inner ends thereof;the inner arms (3,4) each including a respective inner U-shaped cross section; andtwo auxiliary components (18, 18') including one close to the base (1) and another close to the gripper (2), the auxiliary components providing interior connections between the lower inner arm (6) and the lower outer arm (3) and between the inner arm (5) and the upper outer arm (4);each of the arms respectively including at the inner end thereof two pairs of inner end holes (15', 16'; 8', 27; 28, 29; 10', 9') includinga first pair of inner end holes (15', 27, 9', 28) whereby the respective inner end connects with the base or the gripper via a shaft, anda second pair of inner end holes (16', 8', 29, 10') whereby the respective inner end connects with one of the auxiliary components (18, 18') connecting the inner and outer arms;the auxiliary components being freely rotatable relative to the arms.