B - Operations – Transporting – 60 – T
Patent
B - Operations, Transporting
60
T
303/51
B60T 17/00 (2006.01) B60T 17/10 (2006.01)
Patent
CA 1237749
ABSTRACT OF THE DISCLOSURE A combined brake cylinder/air reservoir device in which a relatively small, tubular-shaped piston in a positioning chamber is connected to a larger power piston having an application chamber on one side and a release chamber on the other side in which air is stored in place of separate reservoirs. A replace- able cylinder liner is provided to receive different-sized power pistons. During a brake application, the power piston enters the cylinder liner and is displaced from the liner during brake release to provide free air flow between the application and release chambers and thereby facilitate piston return movement by means of a return spring. A dynamic pressure seal between the application chamber and positioning chamber engages the outer periphery of the tubular-shaped small piston, while a smaller diameter dynamic pressure seal between the release chamber and atmosphere engages the inner periphery of the tubular-shaped small piston. This permits the seals to be located longitudin- ally in the same general area by nesting them, one within the other, thereby permitting the piston stroke to be increased without greatly increasing the longitudinal dimension of the cylinder/reservoir device.
468484
Hart James E.
Kyllonen Allen W.
Spalding Willard P.
American Standard Inc.
Fetherstonhaugh & Co.
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