Abstract:
In a preferred form, a brush-holder assembly for dynamoelectric machines includes a support plate formed with a yieldable clip for holding a brush in a retracted position by engaging the brush shunt wire. The brush is held retracted to prevent its interference with the machine rotor when the rotor is assembled to a case part. The brush is released by depressing the yieldable clip out of the path of the shunt wire so that the shunt wire is disengaged.
Abstract:
In a preferred form, a bearing support assembly for dynamoelectric machines carries one end of the machine shaft so as to limit axial shaft movement. The shaft end is rotatable in a bearing which is axially confined on the shaft by a thrust collar. First and second annular retaining springs are mounted in the end of one of the housing case parts so as to provide support for opposite sides of the bearing. The method of assembling the shaft to the case part includes mounting the first retaining spring, the bearing, and the thrust collar to the shaft end and mounting the second retaining spring within the case part. The shaft is inserted axially into the case part so that the bearing initially engages the second retaining spring. The shaft end is pressed further until the first retaining spring snaps into place within the case part, whereupon the bearing support assembly is completed and the shaft end is supported therein with a predetermined axial end play.
Abstract:
A centrifugal switch assembly for a motor having a starting circuit including a basket shaped actuator normally spring biased into engagement with switch contacts maintaining the starting circuit closed during static and motor low speed conditions. The switch actuator is mounted in a support member providing guide slots preventing rotation of the actuator relative to rotating motor components while being spring biased to the switch closed position. Centrifugal force responsive weights are pivotally mounted in the support member and engage the basket switch actuator moving it against the force of the biasing spring opening the switch contacts when the motor reaches a predetermined speed. The components of the actuator assembly are concentrically positioned upon the motor shaft adjacent the rotor and inwardly of the usual lubricating assembly in a manner without increasing the axial length of the motor.
Abstract:
In preferred form, a combination control valve that is carried by the end closure member of a vehicle leveler unit. A resilient, unitary valve element includes a movable seal surface supported on an annular seat formed around a first port in the end closure of the leveler. It also includes a second port adapted to be connected to a vacuum source and a third port adapted to be connected to atmosphere. A nozzle valve seat on the valve element surrounds the third port. A movable valve actuator engages the nozzle valve seat to position the valve element to open and close the first and third ports to regulate the pressure in the leveler unit and control the vehicle height.
Abstract:
A telescoping energy absorbing unit having an inner cylinder with an end cap is slidably mounted in an outer cylinder and cooperates therewith to form a pair of hydraulically connected variable-volume chambers containing a hydraulic fluid. On predetermined impact causing the inner cylinder to telescope inwardly from an extended position, flow of hydraulic fluid from a first chamber to a second chamber is controlled by a fluid amplifying orifice element so that there is predetermined force resistance or energy absorption provided by the unit. A gas spring is employed to return the cylinders to an extended position after impact. Hydraulic fluid bled through a flow control orifice in a flap valve from the second chamber to the first chamber reduces the rate of recovery of the cylinders to their extended position.
Abstract:
An energy absorbing bumper system for automotive vehicles includes a pair of fluid-filled telescopic cylinder units at respective ends of the bumper mounting the same to the vehicle chassis. Variable volume fluid chambers within each unit have the fluid flow therebetween controlled by a floating orifice and metering rod and one of the chambers is bounded by a gas piston urged by a body of compressed gas to force the telescopic mounting unit to a definite extended or normal position wherein the cylinders of the unit are snugly interengaged to resist relative radial displacement in rough road conditions and the like.
Abstract:
A conduit arrangement is described for conducting a liquid coolant between stationary and rotating parts of a liquid-cooled dynamoelectric machine. One conduit end is rotatably mounted in a self-aligning bearing supported in the stationary part and the other end is mounted for universal movement within the passage opening of the rotating part. The conduit is rotated by a pin extending into the passage of the rotating part.
Abstract:
A dynamoelectric machine cooling arrangement is disclosed for a brushless alternating current generator including an integral rectifier assembly. Rotating parts mounted on the machine shaft are cooled by annular pools of liquid coolant which are circulated around annular supporting portions of the rotating parts. A rectifier support wheel mounted on the shaft has an annular cooling chamber. Heat sinks for supporting radially oriented semiconductor diodes are mounted within the annular chamber and are cooled by an annular pool of coolant supplied by a coolant flow directed over the semiconductor diodes. Coil end turn supports mounted on the shaft include annular reservoirs for containing annular pools of coolant with a coolant flow being directed thereto form radial passages provided in the shaft.