| 摘要 |
<p>A fast-fill master cylinder with at least one piston received in a bore and defining therewith a primary chamber and an auxiliary chamber and further carrying valve means which control fluid communication between said auxiliary chamber and either said primary chamber or a fluid reservoir during a brake application. In order to facilitate the machining of the cylinder bore (28), this latter is given a substantially uniform diameter except for an annular groove (54) in which is held in fixed axial position the sealing member (56) which limits the auxiliary chamber. For use particularly in automotive braking systems.</p> |
