Patent ID: 7549832
Filing Date: 2009-06-23
Classification: E02F

Abstract:
1. A coupling device comprising a coupling frame and an adapter frame having a coupling head, for coupling a loader (C) to a tractor (T), the coupling frame ( 1 ) carriable by the loader (C) being provided with one of two male or female coupling members ( 11 , 12 ; 21 , 22 ) of each of two pairs of “front” and “rear” coupling members ( 11 , 21 ; 12 , 22 ), and with a catch ( 14 ) biased by a spring ( 15 ), the coupling head ( 2 ) of the adapter frame (BA) carriable by said tractor (T) being provided with two coupling members ( 12 , 11 ; 22 , 21 ) complementary to those carried by said coupling frame ( 1 ) and with locking means ( 25 , 25 ′), said catch ( 14 ) co-operating with said locking means ( 25 , 25 ′) to occupy a “locking” position in which said male members ( 11 , 12 ) are fully coupled with said female members ( 21 , 22 ), the device being characterized in that said coupling head ( 2 ) includes prelocking means ( 24 , 24 ′) with which said catch ( 14 ) can co-operate to occupy a “prelocking” position in which the male and female members ( 11 , 12 ; 21 , 22 ) of each pair are engaged in an incomplete manner, such that the loader (C) is secured to the tractor (T) while leaving clearance between the male and female members ( 11 , 12 ; 21 , 22 ) allowing the position of the loader (C) to be adjusted relative to the tractor (T), the spring ( 15 ) tending continuously to hold said catch ( 14 ) in the locking or prelocking position.