Removable, reversible and longitudinally adjustable vehicle seat

A removable, reversible and longitudinally adjustable seat for a vehicle, in which, the structure of the seat cushion is secured to four legs in the form of tenons each capable of cooperating with complementary connecting means borne by two runners, these runners being movable and immobilizable with respect to two parallel slideways adapted to be fixed to the floor of the vehicle and, wherein manually-operated catches are returned, by sprung means, to the position of locking the legs to the runners, wherein each of the legs comprises at least one transversely projecting part forming a retaining member, while the corresponding runner comprises, in its region that accommodates each leg, at least one of said manually-operated hook-shaped catch is articulated to said runners and capable of retracting as the projection of the corresponding leg is introduced into the runner, before coming back to hook onto this projection under the action of the hook shaped catches return means, and wherein the manual means of unlocking the catches are borne by each of the legs.