A motor mounting for mounting a D.C. motor in an automobile body structure comprises a casing for the motor. The casing is constituted by a pair of casing halves and one of the casing halves is an integral part of the automobile body structure.

A wiper driving apparatus comprises a speed reduction gear train mounted on a drive shaft of a motor which drives reciprocally and pivotally a wiper blade; a pin member operatively engaged with said gear train so as to move once every rotation of the gear train; a relay switch driven by a relay coil and including a moving contact and fixed contacts disposed opposite sides of the movable contact; an operating lever member for transmitting the movement of the pin member to the movable contact of t...

A stator of an electric motor provides pole retaining portions which retain the poles therein and are radially project at their end portions towards the outer periphery in a ring shape, whereby winding operations around the outer surface of the pole retaining portion are performed from the outside without any restriction, thus allowing a small-sized motor stator to be easily manufactured.

A mold-release agent injection nozzle is provided in the portion of the die casting machine leading to the mold cavity or in the mold. A mold-release agent is then spray applied to the surfaces of the mold through the nozzle while the mold is closed. The surplus mold-release agent is then discharged through a vent port having a displaceable valve.

This concealed wiper system comprises a wiper motor (1) having a mechanism to house the wiper arm in the retracted position by reversing rotation of the wiper motor; an oscillator (50) in which the oscillation frequency is varied by means of a variable resistor (59) installed within the automobile compartment; a wiper actuation switch (3) for wiper actuation selection; a wiper motor-position detector (2) for detecting wiper motor output shaft position; a wiper motor drive circuit (6) for driving...

A concealed wiper system comprises a wiper motor (1) having a mechanism to house a wiper arm in a retracted stop position by means of the reverse rotation of the wiper motor; a wiper actuation switch (3) with output capability which consists of a two-bit selection signal output from the selected switch positon; a wiper motor position detector (2) which detects data on wiper motor output shaft position, said detector output capability consisting of a two bit position signal determined by the posi...

A mold-release agent injection nozzle is provided in the portion of the die casting machine leading to the mold cavity or in the mold. A mold-release agent is then spray applied to the surfaces of the mold through the nozzle while the mold is closed. The surplus mold-release agent is then discharged through a vent port having a displaceable valve.

A bearing device of the bending and stretching type windshield wiper having a gear train (7, 8, 9) to interlink the wiper link output shaft (2) and the wiper arm head shaft (3), wherein the improvement comprising, a wiper pivot (4) having the first installing hole on the center thereof, and fixed to the body (1) of a car; a stationary gear member (7) extrudingly providing a boss part (71) which has a bearing hole in the center thereof, the stationary gear member (7) is rigidly secured with the w...

A drive circuit for an ultrasonic motor and, more particularly, a drive circuit for an ultrasonic motor which supplies the ultrasonic motor with drive signals of a predetermined frequency and controls the frequency of the drive signals to drive the ultrasonic motor is disclosed. The disclosed drive circuit for an ultrasonic motor drives an ultrasonic motor without generating a remarkable audible sound, even when a detection signal exceeds a predetermined level within a very short time due to the...

A commutator for electric motors which is highly durable and which can be manufactured at lower cost and by a simpler method includes forming the commutator pieces on the outer periphery of the insulating resin material by providing slits between the commutator pieces. Formed on the inner periphery of the commutator pieces are a pair of engagement claws which face each other and become closer to each other in the radially inwardly extending direction. A filling space part which diminishes in the...