| 摘要 |
1,177,552. Hydrodynamic brake. BORGWARNER CORP 18 May, 1967 [29 June. 1966], No. 23212/67. Heading F2E. A fluid motor 17, driven by a pump 15 supplying, fluid through a line 27, is braked by connecting in its fluid exhaust line 28 a variable restriction, comprising ball and spring 54, 55 and a seat 52, which provides a constant retarding force. Pressure in line 27 is applied also to an inlet port 64 of a valve 19 containing the variable restriction assembly so that the piston 44 is moved to the right until the reduced diameter section 45 connects the inlet port 63 receiving the motor exhaust fluid to an exhaust port 29. The motor 17 is then free to be driven by the inlet fluid at 20 from line 27, and to drive, for example, the cage 10 of a washing machine. Stopping of the pump 15 causes the piston to move to the left, and the motor 17 to be braked as stated, the exhaust fluid then leaving the valve 19 through port 29. Reversal of the pump 15 supplies pressure on line 26 to operate a locking device 18 to prevent any rotation of the motor 17, and also drives a further member 16 which may be the agitator of the washing machine.
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