Abstract 943,499. Motor driving arrangements. ELEKTRO-MOTOREN A.G. March 21, 1961 [March 24, 1960], No. 10194/61. Heading H2A. A two motor arrangement giving two output speeds comprises an axial motor 1 having a slidable rotor 2 coupled directly through a shaft 3 to an output pulley 4, and through a clutch lining 15 to another pulley 10, beltdriven from a second motor 22 which need not be of the axial type. Energization of the stator 7 attracts the rotor 2 downwards against a thrust pad 16 and a ball race 18, freeing the clutch 14, 15 and allowing the pulley to idle. On de-energizing the motor 1 the clutch is re-engaged by a spring 17 hence energization of the motor 22 drives the pulley 4. Another arrangement is described whereby the motor 22 can drive an output shaft to a worm and wheel reduction gear where a speed ratio of more than 15 : 1 is required. Specification 676,046.is referred to.
A TWO SPEED ELECTRIC DRIVE COMPRISING A FIRST ELECTRIC MOTOR HAVING A FIXED STATOR AND A ROTOR ON A SHAFT WHICH IS MOVABLE AXIALLY IN ONE DIRECTION RELATIVE TO THE STATOR UPON ENERGIZATION OF THE FIRST MOTOR, SPRING MEANS URGING SAID ROTOR SHAFT IN THE OPPOSITE AXIAL DIRECTION UPON DEENERGIZATION OF THE FIRST MOTOR, A SECOND MOTOR ADAPTED TO BE ENERGIZED UPON DEENERGIZATION OF SAID FIRST MOTOR, AND A CLUTCH INCLUDING A DRIVING ELEMENT CONNECTED THROUGH TRANSMISSION MEANS WITH SAID SECOND MOTOR FOR ROTATION UPON ENERGIZATION OF THE LATTER AND AS DRIVEN ELEMENT SECURED ON SAID ROTOR SHAFT AND ENGAGED WITH SAID DRIVING ELEMENT UPON DISPLACMENT OF SAID MOTOR SHAFT BY SAID SPRING MEANS IN SAID OPPOSITE AXIAL DIRECTION; CHARACTERIZED IN THAT SAID FIRST MOTOR HAS A STATOR BODY CARRYING SAID STATOR AND IN WHICH SAID ROTOR SHAFT IS JOURNALLED WITH THE ENDS OF SAID SHAFT PROJECTING BEYOND SAID BODY, SAID ROTOR IS MOUNTED ON ONE OF SAID ENDS OF THE SHAFT WITH AN AXIAL AIR GAP BETWEEN
Claim 2
Dependent Claim
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A TWO SPEED ELECTRIC DRIVE COMPRISING A FIRST ELECTRIC MOTOR HAVING A FIXED STATOR AND A ROTOR ON A SHAFT WHICH IS MOVABLE AXIALLY IN ONE DIRECTION RELATIVE TO THE STATOR UPON ENERGIZATION OF THE FIRST MOTOR, SPRING MEANS URGING SAID ROTOR SHAFT IN THE OPPOSITE AXIAL DIRECTION UPON DEENERGIZATION OF THE FIRST MOTOR, A SECOND MOTOR ADAPTED TO BE ENERGIZED UPON DEENERGIZATION OF SAID FIRST MOTOR, AND A CLUTCH INCLUDING A DRIVING ELEMENT CONNECTED THROUGH TRANSMISSION MEANS WITH SAID SECOND MOTOR FOR ROTATION UPON ENERGIZATION OF THE LATTER AND AS DRIVEN ELEMENT SECURED ON SAID ROTOR SHAFT AND ENGAGED WITH SAID DRIVING ELEMENT UPON DISPLACMENT OF SAID MOTOR SHAFT BY SAID SPRING MEANS IN SAID OPPOSITE AXIAL DIRECTION; CHARACTERIZED IN THAT SAID FIRST MOTOR HAS A STATOR BODY CARRYING SAID STATOR AND IN WHICH SAID ROTOR SHAFT IS JOURNALLED WITH THE ENDS OF SAID SHAFT PROJECTING BEYOND SAID BODY, SAID ROTOR IS MOUNTED ON ONE OF SAID ENDS OF THE SHAFT WITH AN AXIAL AIR GAP BETWEEN