Abstract: In a traditional hitched trailer there is no way to adjust the ride height of the trailer. Provided is an angular adjusting mechanism (13) for a suspension system (10) comprising a shaft (12) and a crank arm (20), the shaft (12) having a connecting end (14) connected to the crank arm (20), said angular adjusting mechanism (13) comprising a frusto-comcal shaped surface (16) provided on the connecting end (14) and pointing outwardly from said shaft (12), said surface (16) having an array of first cavities (18) arranged circumferentially, a frusto-comcal bore (22) proximate a first extremity of said crank arm (20), said bore (22) having an array of second cavities (24), said bore (22) being operative to mate with said surface (16) of said connecting end (14), and an interlocking element (30) partly positioned in one of said second cavities (24) and partly positioned in one of said first cavities (18) so as to lock said crank arm (20) at a predetermined angular position with respect to said shaft (12).

Abstract: A torsion system (20) comprising a housing (24) adapted to be secured to a structural portion of a vehicle. A shaft (23) has a core portion (32) accommodated in the housing (24) and defines concavities (34) in the core portion (32). The shaft (23) has a connector end (30) connected to a crank arm. The connector end (30) protrudes out of the housing (24). Elastomeric members (25,25?) are received in the concavities (34) of the shaft (23). The elastomeric members (25,25?) each have a geometry so as to at least partially fill the concavities (34) and contact an inner surface of the housing (24), whereby a rotation of the crank arm results in a deformation of the elastomeric members (25,25?).

Abstract: In a traditional hitched trailer there is no way to adjust the ride height of the trailer. Provided is an angular adjusting mechanism (13) for a suspension system (10) comprising a shaft (12) and a crank arm (20), the shaft (12) having a connecting end (14) connected to the crank arm (20), said angular adjusting mechanism (13) comprising a frusto-comcal shaped surface (16) provided on the connecting end (14) and pointing outwardly from said shaft (12), said surface (16) having an array of first cavities (18) arranged circumferentially, a frusto-comcal bore (22) proximate a first extremity of said crank arm (20), said bore (22) having an array of second cavities (24), said bore (22) being operative to mate with said surface (16) of said connecting end (14), and an interlocking element (30) partly positioned in one of said second cavities (24) and partly positioned in one of said first cavities (18) so as to lock said crank arm (20) at a predetermined angular position with respect to said shaft (12).

Abstract: A torsion system (20) comprising a housing (24) adapted to be secured to a structural portion of a vehicle. A shaft (23) has a core portion (32) accommodated in the housing (24) and defines concavities (34) in the core portion (32). The shaft (23) has a connector end (30) connected to a crank arm. The connector end (30) protrudes out of the housing (24). Elastomeric members (25,25?) are received in the concavities (34) of the shaft (23). The elastomeric members (25,25) each have a geometry so as to at least partially fill the concavities (34) and contact an inner surface of the housing (24), whereby a rotation of the crank arm results in a deformation of the elastomeric members (25,25?).