Patent ID: 6123396
Filing Date: 2000-09-26
Classification: B60T,Y10S

Abstract:
A slip-controlled vehicle brake system (10), comprising brake lines (17, 18) that extend between a dual-circuit master cylinder (13) and a respective wheel brake cylinder (19, 20) in each of the brake lines (17, 18),a shutoff valve (21) in each respective brake line (17, 18) of the brake system,a bypass line (24, 25) that bypasses each respective shutoff valve (21) in said brake lines, anda pump (30) in each respective bypass line (24, 25) for pumping pressure fluid, drawn from the associated wheel brake cylinders (19, 20), to the master cylinder (13),each of the pumps (30) are also embodied for pumping pressure fluid from the master cylinder (13) to the wheel brake cylinder (19, 20);each of the pumps (30) are a recirculating positive-displacement vane cell pump; andeach of the pumps (30) in the bypass lines (24, 25) have a common drive motor (38) whose rotational direction is reversible.