Fluid-pressure and analogous brake systems – Speed-controlled – Traction-motor vehicle
Patent
1996-03-15
1999-04-27
Poon, Peter M.
Fluid-pressure and analogous brake systems
Speed-controlled
Traction-motor vehicle
3031171, 60436, F16D 3102
Patent
active
058971769
ABSTRACT:
A braking apparatus includes a brake cylinder having a first opening and a second opening defined therein. The braking apparatus also includes a movable member located within the brake cylinder which has a channel defined therein. The braking apparatus further includes a brake chamber in fluid communication with the brake cylinder. The brake chamber has a brake member located therein. The movable member is moved to a position which allows fluid communication between the first and second opening through the channel thus creating a subsequent pressure drop in the system. The pressure drop causes a hydrostatic transmission in fluid communication with the brake apparatus to be neutralized by a responsive displacement of a pump and motor which reduces the travel speed of a vehicle. Additionally, the movement of the movable member causes a brake member to be forced against a moving object.
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Two pages from the Mannesmann Rexroth Sales Brochure, describing DA Hydraulic Control Speed Dependent Variable Displacement Pump AA4VG, Series 3.
Dvorak Paul A.
Hildner Peter R.
Smith David P.
Swick William C.
Caterpillar Inc.
Charlton Diana L.
Maginot Paul J.
Poon Peter M.
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