Brakes – Wheel – Axially movable brake element or housing therefor
Patent
1975-09-26
1977-03-29
Halvosa, George E. A.
Brakes
Wheel
Axially movable brake element or housing therefor
188264P, 188264F, 188294, 192 7012, 192113B, F16D 6584
Patent
active
040144100
ABSTRACT:
A brake system which utilizes a disc movably mounted on a rotating member such as a shaft, wheel hub or an axle, so that the disc may be tilted at an obtuse angle to the rotating member. A caliper forming two or more hydraulic cylinders and holding associated pistons is mounted adjacent the disc with the ends of the pistons being positioned on opposite sides of the disc. Friction pads are secured to the ends of the pistons. A master cylinder communicates with the caliper held cylinders through a fluid circuit. The fluid circuit includes a direct line leading to the master cylinder, a by-pass line leading to the master cylinder and a line leading from the cylinders of one side to the cylinders of the other side. A one way check valve is positioned in the direct line leading to the master cylinder and a shut-off valve is positioned in the by-pass line. The friction pads frictionally engage the disc in the first mode when the master cylinder is activated and in the second mode, the disc is tilted with the resultant conversion of the motion from rotating to reciprocal so that the brake pistons reciprocatively pump fluid through the by-pass line with its shut-off valve. For complete braking of the second mode the shut-off valve is closed to increase the pressure as the rotating member slows and to hold the pistons and the reciprocating disc in a fixed position thus stopping the rotating member from rotating.
REFERENCES:
patent: 2742982 (1956-04-01), Helmbold
patent: 2788870 (1957-04-01), Heck
patent: 2821273 (1958-01-01), Sanford et al.
patent: 2880823 (1959-04-01), Sedergren
patent: 3420342 (1969-01-01), Botterill
patent: 3584708 (1971-06-01), Heck
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