| 摘要 |
An improved tamper resistant brake actuator for sealing the pressurized parking brake section and inhibiting the unauthorized disassembly thereof. The spring housing has a first annular flange and the adapter base has a second annular flange that are cooperatively configured to define an annular channel when they are joined together. The periphery of the parking chamber diaphragm is provided with an expanded portion, preferably an integral o-ring, that sealably fits within the annular channel when the two annular flanges are engaged so as to provide radial sealing for the parking brake section. A ring-shaped annular retaining member or clamp is circumferentially disposed about the interface of the flanges and diaphragm periphery and is secured with a connecting mechanism that inhibits disassembly of the adapter base. The ends of the retaining member can be crimped, welded or bolted/riveted together. The retaining member is not required to axially clamp the diaphragm periphery.
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