Anti-skid fluid pressure control apparatus

An anti-skid fluid pressure control apparatus comprising;

• (A) a pair of hydraulic units, each of said hydraulic units comprising;
• (a) a first pair of pressurized fluid supply conduits;
• (b) a second pair of pressurized fluid supply conduits;
• (c) a first pair of brake-relieving conduits;
• (d) a second pair of brake-relieving conduits;
• (e) fluid pressure pump means;
• (f) hydraulic reservoir means;
• (g) first electro-magnetic inlet valves arranged in said first pair of pressurized fluid supply conduits, respectively;
• (h) second electro-magnetic inlet valves arranged in said second pair of pressurized fluid supply conduits, respectively;
• (i) first electro-magnetic outlet valves arranged in said first pair of brake-relieving conduits, respectively;
• and
• (j) second electro-magnetic outlet valves arranged in said second pair of brake-relieving conduits, respectively;
• (B) first connecting means for connecting one ends of said first and second pairs of pressurized fluid supply conduits in one of said hydraulic units, to a first brake fluid pressure generating chamber of a tandem master cylinder;
• (C) second connecting means for connecting one ends said first and second pairs of pressurized fluid supply conduits in the other of said hydraulic units to a second brake fluid pressure generating chamber of said tandem master cylinder;
• (D) third connecting means for connecting the other ends of said first pair of pressurized fluid supply conduits in one of said hydraulic units, to a wheel cylinder of one wheel of a first pair of wheels;
• (E) fourth connecting means for connecting the other ends of said second pair of pressurized fluid supply conduits in the one of said hydraulic units, to a wheel cylinder of another wheel of said first pair of wheels;
• (F) fifth connecting means for connecting the other ends of said first pair of pressurized fluid supply conduits in the other of said hydraulic units, to a wheel cylinder of one wheel of a second pair of wheels;
• (G) sixth connecting means for connecting the other ends of said second pair of pressurized fluid supply conduits of the other of said hydraulic units, to a wheel cylinder of another wheel of said second pair of wheels;
• wherein solenoid portions of said first and second electro-magnetic inlet valves, and said first and second electro-magnetic outlet valves, are electrically connected in series with each other, or in parallel with each other.