Fluid-pressure and analogous brake systems – Speed-controlled – Traction-motor vehicle
Patent
1998-03-20
2000-10-24
Oberleitner, Robert J.
Fluid-pressure and analogous brake systems
Speed-controlled
Traction-motor vehicle
3031171, 60436, F16P 3102
Patent
active
061355801
ABSTRACT:
A braking apparatus includes a brake cylinder having a first brake opening and a second brake opening defined therein. The first brake opening is adapted to allow a flow of brake fluid to enter the brake cylinder and the second brake opening is adapted to allow the flow of brake fluid to exit the brake cylinder. The braking apparatus also includes a first transmission opening and a second transmission opening defined in the brake cylinder. The first transmission opening is adapted to allow a flow of transmission fluid to enter the brake cylinder and the second transmission opening is adapted to allow the flow of transmission fluid to exit the brake cylinder. The braking apparatus further includes a movable member located within the brake cylinder. The movable member is positionable between a first position and a second position, wherein the movable member (i) prevents fluid communication between the first brake opening and the second brake opening when located in the first position, and (ii) allows fluid communication between the first brake opening and the second brake opening when located in the second position. In addition, the movable member (i) prevents fluid communication between the first transmission opening and the second transmission opening when located in the first position, and (ii) allows fluid communication between the first transmission opening and the second transmission opening when located in the second position. A method for reducing travel speed of a vehicle which utilizes the above braking apparatus is also disclosed.
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Two pages from the Mannesmann Rexroth Sales Brochure, descriging DA Hydraulic Control Speed Dependent Variable Displacement Pump AA4VG, Series 3.
Addison Bradford G.
Caterpillar Inc.
Oberleitner Robert J.
Siconolfi Robert A.
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