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US 2002/0171286 A1Published application
Brake fluid pressure control unit for vehicle
AssigneeUnisia Jecs Corporation
InventorsYuji Ohishi, Hikaru Morita, Chiharu Nakazawa, Daisuke Hiwatashi
Life of this patent
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Abstract
A vehicular brake fluid pressure control unit includes a base block of aluminum material having a cylinder bore containing a piston and a return spring, and a cover member fixed to the base block to cover an open end of the cylinder bore. The cover member is formed with a vent hole opening into an atmospheric chamber in the cover member, and made of aluminum. material.
Claims17
A brake fluid pressure control unit for a vehicle, the brake fluid pressure control unit comprising:
- a base block of aluminum material, formed with a cylinder bore extending from a bottom end to an open end;
- a piston received slidably in the cylinder bore and shaped to divide the inside of the cylinder bore into a fluid chamber and an atmospheric chamber;
- a bias member disposed between the piston and a cover member, and arranged to urge the piston toward the bottom end of the cylinder bore;
- and
- the cover member fixed to the base block to cover the open end of the cylinder bore, formed with a vent hole opening into the atmospheric chamber, and made of aluminum material.
2 more elements
A brake fluid pressure control unit for a vehicle, the brake fluid pressure control unit comprising:
- a base block of aluminum material, formed with a cylinder bore extending from a bottom end to an open end opened in a lower outside surface of the base block, and an annular recess fringing the open end of the cylinder bore;
- a piston received slidably in the cylinder bore;
- a spring arranged to urge the piston toward the bottom end of the cylinder bore;
- and
- a cover member of aluminum material, including an end wall supporting one end of the spring disposed between the piston and the cover member, an outward flange received in the annular recess of the base block and fixed to the base block, and a cylindrical wall projecting from the lower outside surface of the base block.
2 more elements
Dependencies are inferred from the claim text.