The present disclosure provides a method for controlling a cooling fan-brake of construction equipment, including: generating a brake charging signal of a brake unit; charging hydraulic oil with a high flow rate in the brake unit and completing the charging of hydraulic oil; turning a loading valve of a cooling fan unit off and turning an unloading valve of the cooling fan unit on when the hydraulic oil is charged; and turning the loading valve of the cooling fan unit on and turning the unloading valve of the cooling fan unit off after the charging of hydraulic oil is completed and a predetermined time elapses.

A patient support apparatus includes a base having a length and including a plurality of caster wheels enabling movement of the patient support apparatus across a floor surface. An auxiliary wheel support structure is secured to the base and rotatably supports at least one non-castered auxiliary wheel. A drive mechanism including a motor may be configured to drive the auxiliary wheel. A braking system including at least one brake member may be configured to apply a braking force to decelerate the auxiliary wheel and is movable between a first position wherein the at least one brake member is disengaged from the auxiliary wheel and a deployed position wherein the at least one brake member is frictionally engaged with the auxiliary wheel to restrict rotation of the auxiliary wheel. The braking system may be configured to synchronize the braking forces applied to first and second auxiliary wheels.

A patient support apparatus includes a base having a length and including a plurality of caster wheels enabling movement of the patient support apparatus across a floor surface. An auxiliary wheel support structure is secured to the base and rotatably supports at least one non-castered auxiliary wheel. A drive mechanism including a motor may be configured to drive the auxiliary wheel. A braking system including at least one brake member may be configured to apply a braking force to decelerate the auxiliary wheel and is movable between a first position wherein the at least one brake member is disengaged from the auxiliary wheel and a deployed position wherein the at least one brake member is frictionally engaged with the auxiliary wheel to restrict rotation of the auxiliary wheel. The braking system may be configured to synchronize the braking forces applied to first and second auxiliary wheels.

A trailer spotter and transport assembly comprises a first end comprising an axle, the axle comprising at least two wheels; a second end comprising a mover attachment mechanism for attaching to a mover; and a trailer attachment mechanism located between the first and second ends for attaching to a trailer. The trailer spotter and transport assembly further comprises two air tanks for releasing the air brakes on a trailer.

A trailer spotter and transport assembly comprises a first end comprising an axle, the axle comprising at least two wheels; a second end comprising a mover attachment mechanism for attaching to a mover; and a trailer attachment mechanism located between the first and second ends for attaching to a trailer. The trailer spotter and transport assembly further comprises two air tanks for releasing the air brakes on a trailer.

An off-highway recreational vehicle having a longitudinal centerline includes a frame and a rear suspension. The rear suspension includes a left A-arm, wherein the left A-arm has a pivot axis, the pivot axis being on a right-hand side of the longitudinal centerline.

An off-highway recreational vehicle having a longitudinal centerline includes a frame and a rear suspension. The rear suspension includes a left A-arm, wherein the left A-arm has a pivot axis, the pivot axis being on a right-hand side of the longitudinal centerline.

A haptic operating device for vehicles. The device has a rotatable operating part, a magnetic field source, and a magnetorheological braking device for braking a rotational movement of the operating part. The magnetorheological braking device has two braking components which can be rotated relative to one another and one of which is coupled to the rotatable operating part. The second brake component, acting as an outer brake component, surrounds the first brake component that acts as an inner brake component. A closed magnetorheological brake chamber is provided with a magnetorheological medium and is formed between the two brake components and has a peripheral braking gap.

A hydrodynamic retarder includes: a retarder chamber in which a rotor and a stator are arranged, the rotor and the stator together forming a working chamber for being filled with and emptied of a working medium; a working medium tank, which includes sump, storage, and expansion regions, the sump region and the storage region for accommodating the working medium that is not currently in working chamber; a filling channel for supplying the working medium into the working chamber, the filling channel being a tube including an inlet opening and an outlet opening; a return channel for discharging the working medium from the working chamber; a rotor housing; a stator housing; a tank housing; and an inlet chamber, the inlet opening terminating in the working medium tank, the outlet opening terminating in the inlet chamber, the inlet chamber being formed by the stator housing and the stator.

A magnetorheological fluid includes: a first metal magnetic particle having an average particle diameter of 5 m or more; a second metal magnetic particle having an average particle diameter of 500 nm or less; and an ionic liquid having a cationic group and an anionic group, in which the cationic group is one or more selected from the group including a quaternary ammonium ion, an imidazolium ion, a pyridinium ion, and a phosphonium ion, and the anionic group is one or more selected from the group including a tetrafluoroborate ion, a hexafluorophosphate ion, a trispentafluoroethyl trifluorophosphate ion, and a bis(trifluoromethanesulfonyl)amide ion.