Mounting means for standardized dynamoelectric machines

Claim 2

A dynamoelectric machine comprising; a housing having an elongated, hollow center portion and a pair of end caps that are mounted respectively on opposite ends of said center portion, a pair of bearings mounted respectively on said end caps, a drive shaft having a shoulder adjacent one of its ends, said drive shaft being rotatably mounted on said bearings with one end of said shaft extending through one of the end caps and beyond the housing, a rotor element mounted on the drive shaft for rotation therewith, a stator assembly mounted within said housing around the rotor element, two pairs of feet mounted in spaced apart relation on the housing center portion, each of said feet being positioned to coincide generally with the respective corners of a rectangular plane tangential to the base of said housing center portion, wall means defining two apertures through each of said feet, all of the apertures in the two feet on respectively opposite sides of a plane through the longitudinal axis of said drive shaft being positioned in alignment with one another, with the centers of the four outermost apertures defining the corners of a first rectangle and the centers of the four innermost apertures defining the corners of a second rectangle, and the improvement wherein the midpoint of a straight line extending between the centers of the two apertures nearest the end of said drive shaft extending through said one end cap is spaced a pre-determined distance BA from the shoulder on said drive shaft and is spaced a fixed distance 2F from the midpoint of a straight line extending between the centers of the two apertures at the corners of said second rectangle furthest therefrom, and the sides of said first rectangle parallel to the longitudinal axis of the drive shaft are each a predetermined length 2F'', said fixed distance 2F and said pre-determined length 2F'' being preselected dynamoelectric machine standard dimensions that are both related to different standard frame size designations that correspond to a common standard pre-determined distance BA.

Claim 3

A dynamoelectric machine comprising; a housing having an elongated, hollow center portion and a pair of end caps that are mounted respectively on opposite ends of said center portion, a pair of bearings mounted respectively on said end caps, a drive shaft having a shoulder adjacent one of its ends, said drive shaft being rotatably mounted on said bearings with one end of said shaft extending through one of the end caps and beyond the housing, a rotor element mounted on the drive shaft for rotation therewith, a stator assembly mounted within said housing around the rotor element, two pairs of feet mounted in spaced apart relation on the housing center portion, each of said feet being positioned to coincide generally with the respective corners of a rectangular plane tangential to the base of said housing center portion, wall means defining two apertures through each of said feet, all of the apertures in the two feet on respectively opposite sides of a plane through the longitudinal axis of said drive shaft being positioned in alignment with one another, with the centers of the four outermost apertures defining the corners of a first rectangle and the centers of the four innermost apertures defining the corners of a second rectangle, and the improvement wherein the midpoint of a straight line extending between the centers of the two apertures nearest the end of said drive shaft extending through said one end cap is spaced a pre-determined distance BA from the shoulder on said drive shaft and is spaced a fixed distance 2F from the midpoint of a straight line extending between the centers of the two apertures at the corners of said second rectangle furthest therefrom, and the sides of said first rectangle parallel to the longitudinal axis of the drive shaft are each a pre-determined length 2F'', said fixed distance 2F and said pre-determined length 2F'' being preselected dynamoelectric machine standard dimensions that are both related to different standard frame size designations that correspond to a common standard pre-determined distance BA.

Claim 4

A dynamoelectric machine comprising; a housing having an elongated, hollow center portion and a pair of end caps that are mounted respectively on opposite ends of said center portion, a pair of bearings mounted respectively on said end caps, a drive shaft having a shoulder adjacent one of its ends, said drive shaft being rotatably mounted on said bearings with one end of said shaft extending through one of the end caps and beyond the housing, a rotor element mounted on the drive shaft for rotation therewith, a stator assembly mounted within said housing around the rotor element, two pairs of feet mounted in spaced apart relation on the housing center portion, each of said feet being positioned to coincide generally with the respective corners of a rectangular plane tangential to the base of said housing center portion, wall means defining two apertures through each of said feet, all of the apertures in the two feet on respectively opposite sides of a plane through the longitudinal axis of said drive shaft being positioned in alignment with one another, with the centers of the four outermost apertures defining the corners of a first rectangle and the centers of the four innermost apertures defining the corners of a second rectangle, and the improvement wherein the midpoint of a straight line extending between the centers of the two apertures nearest the end of said drive shaft extending through said one end cap is spaced a pre-determined distance BA from the shoulder on said drive shaft and is spaced a fixed distance 2F from the midpoint of a straight line extending between the centers of the two apertures at the corners of said second rectangle furthest therefrom, and the sides of said first rectangle parallel to the longitudinal axis of the drive shaft are each a pre-determined length 2F'', said fixed distance 2F and said pre-determined length 2F'' being preselected dynamoelectric machine standard dimensions that are both related to different standard frame size designations that correspond to a common standard pre-determined distance BA.

Claim 5

An invention as defined in claim 1 wherein the axially outermost ends of said first and second rectangles are spaced apart a distance eqUal to 2F''-2F at both ends thereof.

Claim 6

An invention as defined in claim 2 wherein the four sides of said innermost rectangle are each substantially equal in length.