Air brake with collet locked push rod and air supply system

Fluid-pressure and analogous brake systems – Multiple fluid-receiving devices – Multiple motors

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92 24, 92 27, 188 67, 188265, 303 13, 303 71, B60T 1322, F16D 6524

Patent

active

RE0328855

ABSTRACT:
An air brake includes a service brake chamber which actuates a push rod. A collet brake chamber is partially defined by a collet brake diaphragm. A locking collet is mounted to the collet brake diaphragm and includes a bore through which the push rod passes. A collet brake spring biases the collet into a tapered collet hole to clamp the collet onto the push rod to prevent the movement of the push rod toward the brake off position. Application of pressure to the collet brake chamber overcomes the force of the collet brake spring and moves the collet away from the tapered collet hole to allow the push rod to move freely. An air supply system, including a quick release valve, a two way check valve, an emergency and parking air supply tank and a pilot check valve, in conjunction with a conventional quick release valve or another type of exhaust valve, automatically supplies air to the service brake chamber from the tank whenever the spring brake supply line is vented. The air supply system can also be used with conventional air brakes.

REFERENCES:
patent: 3228729 (1966-01-01), Schubert
patent: 3285672 (1966-11-01), Avrea
patent: 3294455 (1966-12-01), Valentine
patent: 3443839 (1969-05-01), Hinrichs et al.
patent: 3508794 (1970-04-01), Engle
patent: 3713702 (1973-01-01), Campanini
patent: 4407548 (1983-10-01), Graham
MINI-MAX sales brochure, International Transquip Industries, Inc., 16910 Texas Avenue, Webster, Texas 77598.
Bendix, Service Data for Model SD-02-4.

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