Brake actuator and method of forming the same
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United States of America Patent
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Jan 1, 2013
Grant Date -
Jun 24, 2010
app pub date -
Dec 22, 2008
filing date -
Dec 22, 2008
priority date (Note) -
In Force
status (Latency Note)
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Abstract
An improved diaphragm-type pneumatic brake actuator includes a flange case, a cover cooperable with the flange case, a flexible diaphragm extending between the flange case and the cover forming a lower pneumatic chamber and an upper pneumatic chamber on opposed sides of the diaphragm. A piston assembly is disposed in the cover for moving a spring between compressed and decompressed positions. A spring guide is disposed between the cover and the piston assembly in the upper chamber. The spring guide prevents direct contact of the spring with the cover to prevent formation of a corrosion cell.
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