Clamping assembly for a roof box carrier having an adjustment mechanism

1. A vehicle roof box apparatus comprising:

a cargo container having a bottom section and a top section configured to carry cargo on top of a vehicle;

a plurality of clamping assemblies configured to connect the bottom section of the cargo container to a pair of crossbars, each clamping assembly having a clamp device and an adjustment mechanism, the clamp device being operable from inside the container to grip a crossbar, and

the adjustment mechanism including an actuator accessed from the exterior of the container that releasably engages and disengages the clamp assembly from the roof box without altering a gripping position of the clamp device relative to a crossbar; and

wherein, when the actuator is disengaged, the clamp assembly may be moved along the length of the bottom section, and, when the actuator is engaged, the clamp assembly is fixed in position to the bottom section.

2. The roof box apparatus as claimed in claim 1 wherein, when the adjustment mechanism is actuated to disengage the clamp assembly from the roof box, the roof box remains clamped to the roof rack or racks.

3. The roof box apparatus as claimed in claim 1 wherein the movement of the clamp assembly is in the longitudinal direction of the roof box.

4. The roof box apparatus as claimed in claim 3 wherein movement of the roof box is in the longitudinal direction of the roof box.

5. The roof box apparatus as claimed in claim 1 wherein the adjustment mechanism may be disengaged to allow the roof box to be moved relative to the vehicle cross bar or bars.

6. The roof box apparatus as claimed in claim 1 wherein the at least one actuator is at least one lever.

7. The roof box apparatus as claimed in claim 1 wherein the actuator is integral to and accessed from the clamp assembly.

8. A method of adjusting the position of at least one roof box clamp assembly relative to a roof box by use of an adjustment mechanism including:

a. at least one clamping assembly that engages a roof rack crossbar on a vehicle; and

b. at least one adjustment mechanism with at least one actuator accessed from the exterior of the roof box that releasably engages and disengages the clamp assembly from the roof box without altering a gripping position of the clamping assembly relative to a crossbar; and

wherein, when the actuator or actuators are disengaged, the clamp assembly or assemblies can be moved along the length of the roof box and when the actuator or actuators are engaged, the clamp assembly or assemblies are again fixed to the roof box.

9. The method as claimed in claim 8 wherein movement of the clamp assembly is in the longitudinal direction of the roof box.

10. The method as claimed in claim 8 wherein the at least one actuator is at least one lever.

11. The method as claimed in claim 8 wherein the actuator is integral to and accessed from the clamp assembly.

12. A method of adjusting the position of a roof box relative to at least one vehicle cross bar by use of an adjustment mechanism including:

a. a clamping assembly that engages a roof rack crossbar on a vehicle; and

b. at least one adjustment mechanism with at least one actuator accessed from the exterior of the roof box that releasably engages and disengages the clamp assembly from the roof box without altering a gripping position of the clamping assembly relative to a crossbar; and

wherein, when the actuator or actuators are disengaged, the clamp assembly or assemblies remain clamped to the cross bar or bars and the roof box may be moved along its length and when the actuator or actuators are engaged, the clamp assembly or assemblies are again fixed to the roof box.

13. The method as claimed in claim 12 wherein, when the adjustment mechanism is actuated to disengage the clamp assembly from the roof box, the roof box remains clamped to the roof rack or racks.

14. The method as claimed in claim 12 wherein movement of the roof box is in the longitudinal direction of the roof box.