Valve utilizing shape memory alloys and an anti-lock brake syste

Details Valve utilizing shape memory alloys and an anti-lock brake syste Valve utilizing shape memory alloys and an anti-lock brake syste

1995-07-13

1996-12-31

Ballato, Josie

Fluid-pressure and analogous brake systems

Flow retarder

Isolation valve

3031192, 13759617, 1376371, 251 11, F16K 3166

Patent

active

055887171

ABSTRACT:
A valve for performing pressurization, decompression and pressure maintenance includes linear shape memory alloys. An anti-lock brake system utilizes the valve. The valve has plural spools movable up and down within a housing having plural bores. The respective bores have inlets and outlets. A mechanism for holding a lowering state of the spools is installed to the lower portion of the housing, and the spools return to their original positions by bias springs. In the anti-lock brake system, a master cylinder, wheel brakes and a hydraulic pump are connected to the inlets and outlets of the valve, and an electronic control unit is connected to the shape memory alloys to actuate the shape memory alloys, thereby attaining pressurization, decompression and maintenance of brake pressure.

REFERENCES:
patent: 4736587 (1988-04-01), Suzuki
patent: 5150950 (1992-09-01), Arikawa et al.
patent: 5211371 (1993-05-01), Coffee

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