Extendable roof rack

1. A flush bar roof rack comprising:

a pair of legs, each leg comprising a crossbar housing; and

a crossbar held and supported at each end by the crossbar housing of each leg;

wherein the roof rack comprises an extension means for adjusting the length of the roof rack between the legs;

wherein the extension means comprises an extension member having a support with an end face and a contact face; wherein at least one extension arm projects from the contact face of the support, the extension arm having a first surface and a second surface, and being adapted to fit within a cavity in the crossbar; and wherein the end face of the support has a profile that is the same shape and dimensions as the external profile of an end of the crossbar so that both the support and the crossbar can be held within the crossbar housing;

wherein the roof rack comprises a roof rack extension adjustment and locking mechanism to lock the roof rack in an extended position, the roof rack extension adjustment and locking mechanism including:

an adjustment latch located within a latch housing in an extension arm; and

a plurality of latch engagement sockets or slots located on the crossbar and aligned to engage with the adjustment latch; and

wherein the latch housing comprises a first portion and a second portion, separated by a partition wall therebetween; the first portion of the latch housing being defined by a rear surface nearest the extension member support, a forward surface nearest the distal end of the extension arm, and two opposing side surfaces; and wherein the second portion of the housing comprises a pair of opposing bearings, and a link retaining means that projects at least partially across the second portion of the latch housing at or near the first surface of the extension arm; and wherein the partition wall terminates below the link retaining means to form a link supporting end.

2. The roof rack according to claim 1 , wherein the extension member comprises a first and second extension arm adapted to fit within a first and second cavity, respectively, in the crossbar, the extension arms substantially filling the cavities and being in sliding engagement with surfaces of the cavities.

3. The roof rack according to claim 1 , wherein the roof rack comprises a maximum extension stop.

4. The roof rack according to claim 3 , wherein the extension stop comprises a resilient catch located on the extension member for engagement with a locking means, comprising an aperture or recess, located on the crossbar.

5. The roof rack according to claim 4 , wherein the resilient catch comprises a resilient finger having a lug projecting therefrom, the lug being adapted to engage with the locking means and the resilient finger being attached to, or integral with, an extension arm.

6. The roof rack according to claim 5 , wherein the lug comprises a forward face, which faces toward the distal end of the extension arm;

and a rear face, which faces toward the extension member support; and wherein the forward face of the lug is sloped toward the resilient finger.

7. The roof rack according to claim 6 , wherein the rear face of the lug is a blunt face.

8. The roof rack according to claim 1 , wherein the roof rack comprises a coupling means to hold the crossbar to the leg, the coupling means comprising:

a peg receiving aperture formed in the inboard end of the crossbar housing;

a channel formed in the lower surface of the crossbar and aligning with the peg receiving aperture; and

a peg having a shaft that is dimensioned to engage with the channel and peg receiving aperture when the peg is in a first position and to disengage with the channel and peg receiving aperture when the peg is in a second position.

9. An extension member for a roof rack according to claim 1 , wherein the extension member comprises a support with an end face and a contact face; wherein at least one extension arm projects from the contact face of the support, the extension arm having a first surface and a second surface, and being adapted to fit within a cavity of the crossbar; and wherein the end face of the support has a profile that is the same shape and dimensions as the external profile of an end of a roof rack crossbar, so that both the support and the crossbar can be held within a crossbar housing on a leg of a roof rack.

10. The roof rack according to claim 1 , wherein a leg cover is attached to each leg of the roof rack, the leg cover comprising a body having an upper portion with a roof projecting therefrom, the roof comprising a first surface and a second surface, and wherein a pair of rails project from the second surface to engage with opposing lips within a crossbar.

11. The roof rack according to claim 10 , wherein the leg cover has an inner face from which projects a locating guide.

12. The roof rack according to claim 1 , wherein the adjustment latch comprises:

a link having an L-shaped body comprising an actuating portion and a locating portion, the actuating portion comprising a toggle receiving aperture or recess; and the locating portion being perpendicular to the actuating portion;

a toggle comprising a body having a base and an axle, wherein a shaft projects from the base, and wherein the body comprises an engaging foot projecting from the opposite side of the body to the shaft;

a biasing means having a first end and a second end;

wherein the actuating portion of the link is positioned between the supporting end of the partition wall and the link retaining means, and wherein the toggle receiving aperture, or recess, in the actuating portion is positioned within the second portion of the latch housing, the link being positioned so that the locating portion projects toward the second surface of the extension arm;

wherein the toggle is positioned in the second portion of the latch housing, the toggle shaft engaging with the toggle receiving aperture, or recess, on the actuating portion, and the axle being supported by the opposing bearings; and

wherein the biasing means is positioned in the first portion of the latch housing, the first end of the biasing means being operatively engaged with the locating portion to push the locating portion against the rearward face of the first portion of the latch housing, and the second end of the biasing means pushing against the partition wall.

13. The roof rack according to claim 12 , wherein the biasing means is a compressed spring.

14. The roof rack according to claim 12 , wherein the roof rack comprises a latch release mechanism that is inoperative engagement with the adjustment latch to disengage the adjustment latch from the latch engagement sockets.

15. The roof rack according to claim 14 , wherein the latch release mechanism comprises a button in operative engagement with a shank, the shank being in operative engagement with the locating portion of the link to push the link toward the distal end of the extension arm.

16. The roof rack according to claim 15 , wherein the locating portion of the link comprises a shank receiving aperture having a threaded annular surface and wherein the shank has a threaded end that interlocks with the threaded annular surface of the shank receiving aperture, and wherein the first end of the spring is held in position against the locating portion of the link by the shank.