Braking systems
AssigneeMassey-Ferguson Services N.V.
InventorsGert Nolte, Wolfgang Dittberner
Life of this patent
Estimating the term…
Abstract
Braking system, primarily for wheeled excavators, having a first hydropneumatic brake acting on all wheels and a second auxiliary brake acting on the transmission, a first actuating device to operate the first brake when driving on the road and a second actuating device to operate first and second brakes when the excavator is stationary and working on site, the second actuating device being arranged so that on its operation both brakes are applied simultaneously.
Claims19
A fluid pressure operated braking system for a wheeled vehicle comprising a first braking circuit for wheel brakes, a second braking circuit for a transmission brake and means for controlling operation of said first and second braking circuits, said means including a first valve means connected to a source of fluid pressure and movable between first and second operating positions, a second valve means movable between first and second operation positions, a first conduit for conducting fluid pressure connecting said first and second valve means, a second conduit separately connected to said source of fluid pressure and to said second valve means, means connecting said second valve means to said first braking circuit in said second position of said second valve means, means connecting said second conduit to said first braking circuit in said first position of said second valve means and to said second braking circuit in said second position of said second valve means, means responsive to operation of said first valve means for moving said second valve means between said first and said second positions, means responsive to movement of said second valve means for connecting said second conduit to said second braking conduit.
Dependencies are inferred from the claim text.