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AssigneeLucas Industries public limited company
InventorsAlan Leslie Harris, Keith Lawrence Holding, Robert George Uzzell, Ivan Mortimer
Estimating the term…
A reservoir assembly for a vehicle hydraulic braking system includes two chambers (2, 3) for the storage of hydraulic fluid. The reservoir assembly is provided with a structure for increasing the effective volume of one of the chambers (2), for example a bellows (12) or a bucket (30), and which may be operable in conjunction with the fitting of a filler cap (17) to seal a filler opening (5) for that chamber. This enables a volume of fluid to be accommodated in a chamber of increased volume, thereby substantially eliminating the possibility of volume in excess of a given volume from overflowing from the chamber (2, 3). When the reservoir assembly is installed in a vehicle braking system of a brake-by-wire electro-hydraulic type (EMB) having a first power circuit (51), and a second back-up hydrostatic circuit (60), the one chamber (2) supplies fluid to the hydrostatic circuit, and the other chamber (3) supplies fluid to the power circuit.
A reservoir assembly for a vehicle hydraulic braking system including means defining at least one chamber for storage of hydraulic fluid, means defining a filler opening, and a filling cap adapted to be fitted onto said reservoir assembly to seal said filler opening for said chamber, wherein said reservoir assembly is provided with means for increasing the effective volume of said chamber, said means being operative automatically with fitting of said filling cap onto said reservoir assembly to seal said filler opening.
A reservoir assembly for a vehicle hydraulic braking system comprising a common tank for hydraulic fluid, an imperforate baffle dividing said tank internally into first and second chambers, and said tank has a single filler opening through which one of said chambers can be filled directly with said other chamber being filled indirectly to a given level by spillage over said baffle, a filling cap for closing said filling opening, wherein the said one chamber is provided with means for increasing the effective volume thereof automatically with fitting of said filling cap onto said tank to seal said filler opening.
A vehicle hydraulic braking system comprising a wheel brake adapted to be applied by a first power circuit comprising a source of hydraulic fluid under the control of a control valve, and a second back-up hydrostatic circuit capable of actuating said brake hydrostatically from a pedal-operated master cylinder upon failure of said first circuit, each circuit being supplied with fluid from a reservoir assembly, wherein the said one chamber supplies fluid to said second back-up hydrostatic circuit, and said other chamber supplies fluid to said first power circuit, and wherein said reservoir assembly comprises a common tank for hydraulic fluid, an imperforate baffle dividing said tank internally into first and second chambers, and said tank has a single filler opening through which one of said chambers can be filled directly with said other chamber being filled indirectly to a given level by spillage over said baffle, a filling cap for closing said filling opening, wherein the said one chamber is provided with means for increasing the effective volume thereof automatically with fitting of said filling cap onto said tank to seal said filler opening.
Dependencies are inferred from the claim text.