A VEHICLE LOW PRESSURE BRAKE ARRANGEMENT
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Accused Products
Abstract
A vehicle braking arrangement includes a braking plate connected to a vehicle by a link arm. The braking plate is movable from a rest position to a braking position where contact is made with the ground, and includes a sealing rim arranged to at least partially contact the ground such that an at least partly enclosed volume is formed. The vehicle braking arrangement includes an expandable chamber formed between a lower plate, at least one connecting side wall and an upper plate, which chamber is connectable to the volume. Upon activation, the chamber'"'"'s volume is expanded by movement of the lower plate away from the upper plate. Then the pressure is lowered in the volume which results in that the braking plate is pressed against the ground. In this way, a retaining force is obtained.
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Citations
28 Claims
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1-14. -14. (canceled)
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15. A vehicle braking arrangement comprising:
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a braking plate;
a connecting arrangement adapted to connect the braking plate to a vehicle,and operative to move the braking plate from a rest position with a certain ground clearance to a braking position where contact is made with the ground, the braking plate includes a sealing rim running circumferentially and being arranged to at least partially contact the ground in the braking position such that an at least partly enclosed volume then is formed between the braking plate and the ground; and an expandable chamber formed between a lower plate, at least one connecting side wall and an upper plate, the expandable chamber at least fluidly connectable to the at least partly enclosed volume and where, when the braking plate is taking the braking position, a volume of the expandable chamber is arranged to expand, from a first volume to a second volume in response to movement of the lower plate being moved away from the upper plate such that air pressure in the expandable chamber initially falls below the air pressure of ambient air, such that, when the expandable chamber is fluidly connected to the at least partly enclosed volume, the pressure is lowered in the at least partly enclosed volume as a result of the lowered pressure in expandable chamber, which results in that the braking plate is pressed against the ground by a conferred pressure difference between air outside the at least partly enclosed volume and air in the at least partly enclosed volume such that a retaining force between the braking plate and the ground is obtained. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification