A miniature vehicle includes a chassis frame, front and rear wheel assemblies operatively coupled at front and rear ends of the chassis frame respectively, a motorized assembly supported on the chassis frame to power the rear wheel assembly, and a foot steering arrangement operatively coupled to the front wheel assembly. Therefore, the user is able to control the miniature vehicle by the feet of the user to precisely steer and control the miniature vehicle.

This invention relates to a double linkage safety brake system, which includes at least a brake handle, a base, a rear wheel brake wire, a front wheel brake line, a rear wheel brake and a front wheel brake. Said brake handle is provided with a first connecting rod and a second connection rod, the driving arm of brake handle is provided with a first shaft hole and a second shaft hole, the second shaft hole is an arc-shaped elongated hole, the distance between the first shaft hole and the shaft 200 is smaller than the distance between the second shaft hole and the shaft. A first support shaft is pivoted between the first shaft hole and the first connecting rod, and the outer side of the first connecting rod is connected to said rear wheel brake wire. A second support shaft is pivoted between the second shaft slot and the second connecting rod, and the outer side of the second connecting rod is connected to the front wheel brake wire. In this way, the driver only needs to press the brake once to output a time difference braking force by the first connecting rod and the second connecting rod, and the rear wheel brake and the front wheel brake can generate a time difference braking action; furthermore, the moving arc length of the second connecting rod is greater than the moving arc length of the first connecting rod when the driving arm rotates, so the braking force generated by the second connecting rod is greater than the braking force of the first connecting rod, and the braking force of the front wheel brake is greater than the braking force of the rear wheel brake, to achieve the purpose of safe braking, and can prevent accidents caused by the driver start the front wheel brake first.

A vehicle brake system operable to simultaneously apply an equal amount of braking pressure to a plurality of tires. The system includes a pair of brake guides, a brake bar secured to the brake guides, and a control bar secured to the brake bar. The control bar is operable to move the brake bar back and forth so that a portion of the brake bar selectively abuts the plurality of tires to apply the braking pressure. The system may be retrofitted to existing vehicles or fitted to new vehicles.

A vehicle brake system operable to simultaneously apply an equal amount of braking pressure to a plurality of tires. The system includes a pair of brake guides, a brake bar secured to the brake guides, and a control bar secured to the brake bar. The control bar is operable to move the brake bar back and forth so that a portion of the brake bar selectively abuts the plurality of tires to apply the braking pressure. The system may be retrofitted to existing vehicles or fitted to new vehicles.

Systems and methods for emergency brake systems are provided herein. In this regard, a brake system may comprise a summing lever having a first end and a second end, a brake handle coupled to the first end of the summing lever, the brake handle rotatably coupled about a first axis, and a linear actuator having a plunger, the plunger being coupled to the second end of the summing lever. In various embodiments, an idler link may be coupled between the brake handle and the first end of the summing lever. The brake system may further comprise a brake cable coupled between the summing lever and a brake metering valve. The brake metering valve may be actuated in response to at least one of the brake handle being rotated about the first axis or the linear actuator being actuated.

A variable traction device for drifting vehicles that allows the driver to vary the traction of the rear wheels with the road surface by alternating the weight of the drift vehicle between two sets of rear wheels with a substantially different coefficient of friction. The variable traction device includes a set of primary rear wheels, a set of secondary rear wheels, and an actuator lever. The actuator lever is located within reach of the driver and is operatively coupled to raise and lower the secondary rear wheels between a retracted position in which the vehicles weight is on the primary rear wheels and a deployed position in which the vehicles weight is on the secondary rear wheels. By manipulation of the actuator lever, it gives the driver the ability to vary the traction of the rear wheels with the road surface.

A variable traction device for drifting vehicles that allows the driver to vary the traction of the rear wheels with the road surface by alternating the weight of the drift vehicle between two sets of rear wheels with a substantially different coefficient of friction. The variable traction device includes a set of primary rear wheels, a set of secondary rear wheels, and an actuator lever. The actuator lever is located within reach of the driver and is operatively coupled to raise and lower the secondary rear wheels between a retracted position in which the vehicles weight is on the primary rear wheels and a deployed position in which the vehicles weight is on the secondary rear wheels. By manipulation of the actuator lever, it gives the driver the ability to vary the traction of the rear wheels with the road surface.

Systems and methods for emergency brake systems are provided herein. In this regard, a brake system may comprise a summing lever having a first end and a second end, a brake handle coupled to the first end of the summing lever, the brake handle rotatably coupled about a first axis, and a linear actuator having a plunger, the plunger being coupled to the second end of the summing lever. In various embodiments, an idler link may be coupled between the brake handle and the first end of the summing lever. The brake system may further comprise a brake cable coupled between the summing lever and a brake metering valve. The brake metering valve may be actuated in response to at least one of the brake handle being rotated about the first axis or the linear actuator being actuated.

A motor vehicle hydraulic brake system master cylinder, having at least one piston which is arranged in a housing and displaceable along an axis as a result of brake actuation and to which a pressure chamber which can be connected to wheel brakes, and a refill chamber is assigned, wherein the pressure chamber in the non-actuated state can be connected to a fluid reservoir via a compensating bore and on actuation of the brake can be isolated therefrom by means of a cup seal arranged on the piston in order to build up pressure. The master cylinder having a cup seal arranged in a radially open, encircling groove of the piston which groove is formed by a first and a second radially encircling projection, wherein when the brake actuation is released additional fluid is drawn from the refill chamber in the direction of the pressure chamber via the second projection.

A parking brake system. The parking brake system may include a braking assembly frame having a front end portion and a second end portion; a pressure bar disposed at the second end portion of the braking assembly frame, wherein the pressure bar may be configured to apply a braking force to a tire in a first state and to remove the braking force in a second state; and a braking control actuator operatively linked to the braking assembly frame, wherein the braking control actuator may be configured to cause the braking assembly frame to move the pressure bar between the first state and the second state.