Abstract: A tandem wheel assembly for a work vehicle includes a tandem wheel housing, a center drive member rotatably disposed within the housing, first and second wheel end assemblies, a coupler between each wheel end drive member and the center drive member, and a brake assembly. Each wheel end assembly includes an input shaft, a wheel end drive member mounted thereon, a wheel end gear train coupled to the input shaft, an output shaft coupled to the wheel end gear train, and a wheel end hub coupled to the output shaft for supporting one of the wheels. The brake assembly is coupled to the tandem wheel housing and to the input shaft or the output shaft of at least one of the first wheel end assembly or the second wheel end assembly and reduces the amount of backlash.

Abstract: A hydraulic control apparatus includes an output-side oil passage into which oil from a first oil passage and oil from a second oil passage flow, and a pressure regulating check valve regulating a hydraulic pressure in the second oil passage. The pressure regulating check valve includes first and second elastic portions housed in a spool hole between a valve body and a bottom of the spool hole. A natural length of the second elastic portion is shorter than a distance between the valve body and the bottom when the valve body closes an inflow hole. The second elastic portion applies an elastic force to the valve body in a state in which the valve body opens the inflow hole.

Abstract: A method for controlling the safe operation of a rear axle of a set of combined axles powered by a motor vehicle, particularly for a vehicle designed to carry loads and which have 6×4, 8×4 or 10×4 type traction configurations, or tridem models formed by three drive axles. The method includes a set of steps and activities that ensure proper and safe operation of systems and mechanisms for uncoupling and raising a rear axle of a vehicle, and more specifically checking a status of certain operating parameters of the rear axle and of the vehicle itself in order to permit or prevent uncoupling and coupling, as well as raising and lowering of the rear axle of the vehicle.

Abstract: Exemplary embodiments are directed to pool cleaners that remove debris from water using a plurality of cyclonic flows, or that include a removable impeller subassembly, a check valve for a debris canister, a particle separator assembly having a handle that locks to the pool cleaner, a modular roller drive gear box, or a roller latch that secures a roller to the pool cleaner. Exemplary embodiments are also directed to the check valve and the roller latch themselves. Exemplary embodiments are directed to a filter medium for pool cleaners that includes embossments providing flow channels for water, and to roller assemblies for pool cleaners. Exemplary embodiments are directed to pool cleaners including alternative pump motor engagements. Exemplary embodiments are directed to pool cleaners power supplies that include a potted and contoured power board assembly, and to kickstands therefor. Exemplary embodiments are directed to a pool cleaner caddy, and removable wheels therefor.

Abstract: A motorized vehicle has a plurality of left wheels and right wheels. The vehicle includes a first motor adapted for powering at least two of the plurality of left wheels and a second motor adapted for powering at least two of the plurality of right wheels. The vehicle also includes a first power transferring device for transferring power from the first motor to a left wheel, a second power transferring device for transferring power from the second motor to a right wheel, a third power transferring device for transferring power from the first left wheel to a second left wheel, and a fourth power transferring device for transferring power from the first right wheel to a second right wheel. The vehicle also includes a first braking mechanism for the first of the left wheels and a second braking mechanism for the second of the left wheels.

Abstract: The stair-climbing apparatus has a series of articulating wheel sets extending below the platform. All of the wheel sets are vertically adjustable to negotiate stairways and similar changes of elevation. The lead wheel set is fixed longitudinally relative to the platform, while following wheel sets are longitudinally adjustable to adjust for the pitch or slope of different stairways. The apparatus uses sensors (e.g., mechanical, infrared, ultrasonic, etc.) to detect the presence of the stair risers and their height, control of the assembly being accomplished by a control circuit on board the machine. The wheel sets are raised and lowered independently of one another by pantograph mechanisms extending between the platform and the wheel sets. The horizontally adjustable wheel sets are positioned by a longitudinally disposed rack on the platform.

Abstract: A heavy vehicle, such as a transport vehicle or a “civil engineering” vehicle, of a mass greater than 500 metric tons, fitted with tires of radial structure of a diameter greater than three meters fifty having an axial width greater than 37 inches, and comprising a front axle provided with at least two tires and a rear axle, by which is transmitted at least part of the motive power. The rear axle of the vehicle comprises at least five tires.

Abstract: Presented is a heavy vehicle, such as a transport vehicle or civil engineering vehicle, of a mass greater than 500 metric tons and operable to generate a motive power. The vehicle includes tires of radial structure having a diameter greater than 3.5 meters, a front axle coupled to at least two tires, and at least one rear axle coupled to at least two tires and by which is transmitted at least part of the motive power. At least one of the axles includes at least four tires associated in pairs symmetrically on either side of the axle, and two associated tires have different axial widths.

Abstract: A heavy vehicle of a mass greater than 500 metric tons, such as a transport vehicle or a “civil engineering” vehicle, fitted with tires of radial structure of a diameter greater than three meters fifty having an axial width greater than 37 inches, and comprising a front axle provided with at least two tires and a rear axle comprising at least four tires and by which is transmitted at least part of the motive power. At least two tires on the front axle transmit part of the motive power at least when the vehicle is following a trajectory which is not rectilinear and, at least when the vehicle is following a trajectory which is not rectilinear, the tires of an axle transmitting at least part of the motive power have different speeds of rotation.

Abstract: A vehicle, such as a heavy truck, includes a tandem axle assembly supported with respect to a frame. The tandem axle assembly has first and second axle assemblies which each include respective left and right wheels. A third axle assembly is supported with respect to the frame and includes left and right wheels which are steerable by an operator to facilitate steering of the vehicle. The engine is coupled with the first axle assembly. A motor/generator is coupled with the second axle assembly. A controller is attached to each of the motor/generator and an energy storage device.

Abstract: Presented is a heavy vehicle, such as a transport vehicle or a civil engineering vehicle, of a mass greater than 500 metric tons. The vehicle is fitted with tires of radial structure having a diameter greater than 3.5 meters and an axial width greater than 37 inches. The vehicle has a front steering axle provided with at least two tires and at least one rear axle provided with at least four tires for transmitting at least part of motive power. The rear axle has at least two trailing arms each associated with two tires.

Abstract: A system is provided for the control of two transmissions in a multi-combination vehicle having at least two engines, each engine operatively coupled to one transmission. Each transmission has its own electrical power source and an electronic control unit. The system includes an electronic gear selector having a power input and a variable output representative of a desired operation of each of the transmissions. The system further includes a gear selector control module that is provided power from each of the electronic control units and selectively provides power to the power input of the electronic gear selector from a selected one of the electronic control units. The variable output of the electronic gear selector is in communication with at least the selected one of the electronic control units.

Abstract: To provide a carrier vehicle capable of restraining an increase in cost of a power train, the carrier vehicle is constructed by front axles provided respectively steerably on left and right sides of a front portion of the vehicle and mounted with wheels, a first engine provided at the front portion of the vehicle, a first drive axle provided at a middle portion of the vehicle and mounted with wheels at both left and right ends thereof, a first transmission, a second drive axle provided at a rear portion of the vehicle and mounted with wheels at both left and right ends thereof, a second engine provided at the rear portion of the vehicle and on an upper side of the second drive axle, and a second transmission provided to connect to a front side of the second engine.