Clutch and brake motor arrangement

Claim 2

A magnetic motor brake arrangement comprising: electric motor means, shaft means for connecting the rotor of said motor to a load, one way clutch means surrounding said shaft means and being coupled to said shaft means when said shaft means operates in a given direction and being de-coupled from said shaft means when said shaft means operates in the opposite direction, brake means affixed to said clutch means, further brake means associated with the motor casing, and permanent magnet means for forcing said brake means into contiguous relationship with said further brake means to prevent the rotation of said shaft in said given direction, even when said motor is de-energized.

Claim 3

The magnetic motor brake arrangement of claim 1 wherein said brake means comprises a brake wheel attached to said clutch means.

Claim 4

A magnetic motor brake arrangement comprising: electric motor means, shaft means for connecting the rotor of said motor to a load, one way clutch means surrounding said shaft means and being coupled to said shaft means when,said shaft means operates in a given direction and being de-coupled from said shaft means when said shaft means operates in the opposite direction, brake means associated with said clutch means, said brake means comprising a brake wheel integral to said clutch means, said brake means further comprising stationary brake surface means to stop said brake disc when said brake disc and said stationary braking surface means are contiguous to one another, and permanent magnet means for forcing said brake disc and said stationary braking surface into contiguous relation-ship with one another.

Claim 5

A magnetic motor brake arrangement comprising: electric motor means, shaft means for connecting the rotor of said motor to a load, one way clutch means surrounding said shaft means and being coupled to said shaft means when,said shaft means operates in a given direction and being de-coupled from said shaft means when said shaft means operates in the opposite direction, brake means associated with said clutch means, said brake means comprising a brake wheel integral to said clutch means, said brake means further comprising stationary brake surface means to stop said brake disc when said brake disc and said stationary braking surface means are contiguous to one another, and permanent magnet means for forcing said brake disc and said stationary braking surface into contiguous relation-ship with one another.

Claim 6

The magnetic motor brake arrangement of claim 3 wherein the stationary braking surface is on said motor casing, and wherein said permanent magnet means attracts said brake wheel toward said motor casing to cause said braking surface means and said brake wheel to be contiguous to one another.

Claim 7

The magnetic motor brake arrangement of claim 4 wherein said braking surface comprise pockets in said motor casing, pads mounted in said pockets, and wherein means are provided in said pockets for assuring that the tops of said pads are juxtaposed to said brake wheel when said permanent magnet means causes said brake wheel and said braking surface means to be contiguous to one another.

Claim 8

The magnetic motor brake arrangement of claim 5 wherein said brake wheel and braking suRface means are always in contiguous relationship to one another due to said permanent magnet means.

Claim 9

The magnetic motor brake arrangement of claim 4 wherein non-resilient means are provided for moving said clutch and integral brake wheel away from the braking surface means when said motor is energized so that said brake wheel and said braking surface are then noncontiguous.

Claim 10

The magnetic motor brake arrangement of claim 7 wherein said non-resilient means comprises: end-bell means attached to said motor casing and extending frontwards therefrom over said brake wheel, said braking surface means being mounted on the wall of said end-bell means to register with friction means on said brake wheel means, said friction means and said braking surface means being contiguous when said motor is de-energized, and pin means on the shaft of said motor to cause said clutch means to move with the shaft of said motor when said motor is energized to disconnect said contiguous relationship between said friction means and said braking surface means.

Claim 11

The magnetic motor braking arrangement of claim 1 wherein said permanent magnet means comprises a sintered permanent magnet.

Claim 12

The magnetic motor braking arrangement of claim 3 wherein said brake wheel cooperates with cork friction pads mounted on the end-bell of the motor.

Claim 13

A magnetic motor brake arrangement comprising: electric motor means, shaft means for connecting the rotor of said motor to a load, brake means fixed to said shaft means, further brake means affixed to the motor casing, and permanent magnet means for forcing said brake means to abut said further brake means to prevent the rotation of said shaft responsive to the de-energization of said motor.

Claim 14

A magnetic motor brake arrangement comprising: electric motor means, shaft means for connecting the rotor of said motor to a load, brake means fixed to said shaft means, further brake means affixed to the motor casing, and permanent magnet means for forcing said brake means to abut said further brake means to prevent the rotation of said shaft responsive to the de-energization of said motor.

Claim 15

A magnetic motor brake arrangement comprising: electric motor means, shaft means for connecting the rotor of said motor to a load, brake means fixed to said shaft means, said brake means comprising a brake wheel fixed to said shaft means, stationary braking surface means to stop said brake wheel when said brake wheel and said stationary braking surface means are contiguous to one another, permanent magnet means for enabling said brake means to prevent the rotation of said shaft responsive to the de-energization of said motor, and said permanent magnet means being positioned to force said brake wheel and brake surface means into contiguous relationship when said motor is de-energized.

Claim 16

A magnetic motor brake arrangement comprising: electric motor means, shaft means for connecting the rotor of said motor to a load, brake means fixed to said shaft means, said brake means comprising a brake wheel fixed to said shaft means, stationary braking surface means to stop said brake wheel when said brake wheel and said stationary braking surface means are contiguous to one another, permanent magnet means for enabling said brake means to prevent the rotation of said shaft responsive to the de-energization of said motor, and said permanent magnet means being positioned to force said brake wheel and brake surface means into contiguous relationship when said motor is de-energized.

Claim 17

The magnetic motor brake arrangement of claim 12 wherein said braking surface means comprise pockets in said motor casing, pads mounted in said pockets, and wherein means are provided in said pockets for assuring that the tops of said pads are juxtaposed to said brake wheel when said permanent magnet means causes said brake wheel and braking surface means to be contiguous to one another.

Claim 18

The magnetic motor brake arrangement of claim 13 wherein the rotor shaft and brake wheel are moved away from said brake surface means when said motor is energized.

Claim 19

The magnetic motor brake arrangement of claim 14 wherein said means in said pockets for assuring that the tops of said pads are juxtaposed to said brake wheel comprises spring means, said pads fitting in said pockets to float on said springs.