William W Punshon

US Patent:

42952689, Oct 20, 1981

Filed:

Aug 28, 1980

Appl. No.:

6/182084

Inventors:

William D. Punshon - Bridgeton MO
C. Theodore Peachee - Maryland Heights MO

Assignee:

Emerson Electric Co. - St. Louis MO

International Classification:

H02K 1502

US Classification:

29596

Abstract:

An electric motor having a stator assembly, a shaft, a rotor mounted on the shaft, and a pair of end shields secured to the stator assembly and journalling the shaft for rotation of the rotor within the stator assembly. The motor includes a pair of self-aligning bearings for transmitting both radial and thrust (i. e. , axial) loads from the shaft to the end shields. Each of the end shields has an outwardly facing race. A first ball member is axially fixed with respect to the shaft and is journalled in the race of one of the end shields. A second ball member is axially movable along the shaft and is journalled in the race of its respective end shield. A pushnut or the like is provided to axially secure the second ball member to the shaft when the first and second ball members are journalled in their respective races thereby to substantially prevent axial movement (i. e. , end play) of the rotor with respect to the stator assembly and to permit the transfer of axial loads in either direction from the shaft to the end shields. A method of assemblying a motor, such as above described, is also disclosed.

US Patent:

42458706, Jan 20, 1981

Filed:

Apr 6, 1979

Appl. No.:

6/027728

Inventors:

William D. Punshon - Bridgeton MO
C. Theodore Peachee - Maryland Heights MO

Assignee:

Emerson Electric Co. - St. Louis MO

International Classification:

F16C 1710
H02K 516

US Classification:

308 36

Abstract:

An electric motor having a stator assembly, a shaft, a rotor mounted on the shaft, and a pair of end shields secured to the stator assembly and journalling the shaft for rotation of the rotor within the stator assembly. The motor includes a pair of self-aligning bearings for transmitting both radial and thrust (i. e. , axial) loads from the shaft to the end shields. Each of the end shields has an outwardly facing race. A first ball member is axially fixed with respect to the shaft and is journalled in the race of one of the end shields. A second ball member is axially movable along the shaft and is journalled in the race of its respective end shield. A pushnut or the like is provided to axially secure the second ball member to the shaft when the first and second ball members are journalled in their respective races thereby to substantially prevent axial movement (i. e. , end play) of the rotor with respect to the stator assembly and to permit the transfer of axial loads in either direction from the shaft to the end shields. A method of assemblying a motor, such as above described, is also disclosed.

US Patent:

D2571340, Sep 30, 1980

Filed:

Dec 26, 1978

Appl. No.:

5/972677

Inventors:

Terence M. Tumbrink - Glencoe MO
William Punshon - Ballwin MO

International Classification:

D1102

US Classification:

D11157