A suspension system includes: a trailing arm and a lower arm which are turnably connected to a chassis and are joined in such a way as to be displaceable relative to each other through a hinge mechanism; and a stabilizer. The suspension system includes a stabilizer link which connects the stabilizer to the trailing arm. A fitting point of the stabilizer link to the trailing arm is located behind a center axis of the hinge mechanism in a vehicle front-back direction, and a fastening point of the stabilizer and the stabilizer link is located above the fitting point in a vehicle up-down direction and inside the fitting point in a vehicle width direction.

An apparatus and methods are provided for a front structural bulkhead for improving the strength of an off-road vehicle chassis. The chassis is a welded-tube variety of chassis that includes a front portion and a rear portion that are joined to an intervening passenger cabin portion. Frontward stays and a bulkhead mount couple the front structural bulkhead to the front portion. Bulkhead mount pillars and a bulkhead mount crossmember couple the front structural bulkhead to the passenger cabin portion. The front structural bulkhead includes a modular chassis for supporting drivetrain components that are operably coupled with front wheels of the vehicle. The front structural bulkhead includes upper and lower mounting points configured to receive front suspension controls arms. The upper and lower mounting points are configured to allow the front wheels to move vertically due to the vehicle traveling over terrain.

An apparatus and methods are provided for a front structural bulkhead for improving the strength of an off-road vehicle chassis. The chassis is a welded-tube variety of chassis that includes a front portion and a rear portion that are joined to an intervening passenger cabin portion. Frontward stays and a bulkhead mount couple the front structural bulkhead to the front portion. Bulkhead mount pillars and a bulkhead mount crossmember couple the front structural bulkhead to the passenger cabin portion. The front structural bulkhead includes a modular chassis for supporting drivetrain components that are operably coupled with front wheels of the vehicle. The front structural bulkhead includes upper and lower mounting points configured to receive front suspension controls arms. The upper and lower mounting points are configured to allow the front wheels to move vertically due to the vehicle traveling over terrain.

A dual bearing strut assembly for a vehicle suspension system includes a strut with a shock absorber comprising a damper cylinder and a piston rod, and a coil spring disposed around the shock absorber. The damper cylinder may be affixed to a knuckle of a vehicle wheel assembly and the piston rod may be affixed to a top strut mount. An upper bearing assembly and a lower bearing assembly are included. The coil spring has an upper end seated to the upper bearing assembly and a lower end seated to the lower bearing assembly. The lower end of the coil spring freely rotates about the damper cylinder when the coil spring is compressed thereby reducing torque on the damper cylinder and reducing bump steer of the vehicle steering system.

A dual bearing strut assembly for a vehicle suspension system includes a strut with a shock absorber comprising a damper cylinder and a piston rod, and a coil spring disposed around the shock absorber. The damper cylinder may be affixed to a knuckle of a vehicle wheel assembly and the piston rod may be affixed to a top strut mount. An upper bearing assembly and a lower bearing assembly are included. The coil spring has an upper end seated to the upper bearing assembly and a lower end seated to the lower bearing assembly. The lower end of the coil spring freely rotates about the damper cylinder when the coil spring is compressed thereby reducing torque on the damper cylinder and reducing bump steer of the vehicle steering system.

A system and method for independent suspension for a mower, including a frame having a front structural member and respective side structural members, a first front wheel assembly, and a second front wheel assembly. The system also includes a first suspension arm pair having a first suspension arm and a second suspension arm, each pivotably coupled at one end to the front structural member and at another end to the first wheel front assembly such that the second suspension arm is vertically offset from the first suspension arm. The system also includes a second suspension arm pair having a third suspension arm and a fourth suspension arm, each pivotably coupled at one end to the front structural member and at another end to the second front wheel assembly such that the fourth suspension arm is vertically offset from the third suspension arm.

A system and method for independent suspension for a mower, including a frame having a front structural member and respective side structural members, a first front wheel assembly, and a second front wheel assembly. The system also includes a first suspension arm pair having a first suspension arm and a second suspension arm, each pivotably coupled at one end to the front structural member and at another end to the first wheel front assembly such that the second suspension arm is vertically offset from the first suspension arm. The system also includes a second suspension arm pair having a third suspension arm and a fourth suspension arm, each pivotably coupled at one end to the front structural member and at another end to the second front wheel assembly such that the fourth suspension arm is vertically offset from the third suspension arm.

A lowerable vehicle frame with a folding trailer hitch for trailers and other vehicles has a vehicle frame, which can be transitioned between a lowered transit position and a raised deployed position through a swing suspension assembly and a plurality of lifting devices. A folding trailer hitch connected to the forward end of the vehicle frame allows the vehicle frame to be towed, and folds upwards for storage and aesthetics.

A lowerable vehicle frame with a folding trailer hitch for trailers and other vehicles has a vehicle frame, which can be transitioned between a lowered transit position and a raised deployed position through a swing suspension assembly and a plurality of lifting devices. A folding trailer hitch connected to the forward end of the vehicle frame allows the vehicle frame to be towed, and folds upwards for storage and aesthetics.

The present invention provides, with reference to FIG. 1, a retractable wheel and/or track drive assembly for an amphibian comprising an actuator, a retraction linkage assembly movable between a protracted position and a retracted position, a suspension assembly at least partially connected to the retraction linkage assembly and movable between a protracted position and a retracted position, and at least one wheel and/or track drive. When the retraction linkage assembly and the suspension assembly are protracted then the retraction linkage and/or suspension assembly supports and/or holds at least one wheel and/or track drive in a ground engaging position for use on land.