Braking-power boosters with noise suppression
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United States of America Patent
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-
Dec 12, 1989
Grant Date -
N/A
app pub date -
Mar 7, 1988
filing date -
Mar 24, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A braking-power booster including a valve for controlling the pressure that acts upon the booster piston. The valve has two radially spaced valve seats, which both face toward and seal off against a valve sealing plate. With the radially inward valve seat off the valve plate, air passes through the valve. A silencer in the form of a screen is arranged directly alongside the radially inward seat that is opened off the plate. Upon air passing through the valve, the screen suppresses noise generated in the valve. The screen is of a round-wire netting, comprised of brass wire that is galvanized. The screen has a cup-shape, and its convex side faces the seat.
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