A treadmill includes a running deck in a running area and rollers. An endless transportation belt is stretched over and guided around the rollers for moving the transportation belt in a certain direction in the running area. A cushioning layer is disposed on the running deck and a glide layer with segments covers the cushioning layer. Both of these layers are underneath the transportation belt. Another embodiment of the invention is a treadmill including rollers and an endless transportation belt stretched over and guided around the rollers. A control unit is connected to a belt drive which drives the rollers for controlling the speed of the transportation belt. A position sensor is disposed in the vicinity of the transportation belt to recognize the position of a person on the transportation belt. The position sensor is also connected to the control unit which automatically adjusts the speed of the transportation belt by sending a position signal to the control unit. An additional embodiment of the invention is a configuration for conducting a treadmill race. A further embodiment of the invention is a configuration for displaying a virtual reality in combination with a treadmill.

ESTOP is a braking device causing a motorized vehicle, such as a snowmobile or ATV, to stop when the driver is ejected. When the ESTOP is armed, with a trigger pin attached by a tether and clip to a driver, the vehicle braking system functions normally. When the driver is ejected, removing the trigger pin, the ESTOP, unarmed, releases a force applying pressure, mechanically or hydraulically, to brake pads stopping the vehicle's brake rotor and bringing the vehicle to rest. Mechanically, ESTOP applies pressure from a released spring to brake pads on a caliper mounted on the vehicle's brake rotor. Hydraulically, the ESTOP applies pressure from a released spring to the vehicle's hydraulic brake system through a secondary master cylinder. ESTOP potential energy is not limited to a coiled wire spring, but may include a compressed gas canister, engine provided vacuum or an electrical solenoid.

A simplified brake control system comprises a source of pressurized fluid, a spring-set brake with a hydraulic release mechanism and a control valve connected between the brake and the source. The control valve has a valve body and a flow control mechanism in the body and mounted for movement between a first (solenoid-energized) position and a second (solenoid-de-energized) position. A one-way check valve is built into the valve body. How the system operates depends upon two factors, namely, (a) whether the valve flow control mechanism is in its first or its second position, and (b) the relationship of the pressure of the source, i.e., the first pressure, and the second pressure in the release mechanism. When the flow control mechanism is in the first position, the release mechanism may be pressurized for brake release. And when such mechanism is in the second position, the release mechanism is vented to the reservoir through the brake port, the second passage and the drain port. A new method for controlling a brake is also disclosed.

A spring applied, hydraulically released (SAHR) parking and emergency brake system 1) can be manually overridden to permit towing or assisted vehicle transport when charge pump pressure is unavailable for the brakes, and 2) is reset either a) automatically when charge pump pressure becomes available or b) manually. Override is made possible by a manual override assembly that includes a manually-actuated hand pump and an override valve. The override valve is manually actuated to isolate the brake release actuators and the outlet of the hand pump from the system's reservoir and is reset to its open position in response to the presence of hydraulic pressure at a designated location of the braking system. Automatic reset of the override valve preferably is effected by the supply of pressurized fluid to a previously-unpressurized port of the override valve. The hand pump, override valve, and any other brake control valve(s) of the braking system preferably are incorporated into a single control module.