Methods of making fractional horsepower motors

Details Methods of making fractional horsepower motors Methods of making fractional horsepower motors

1974-10-21

1976-10-05

Hall, Carl E.

Metal working

Method of mechanical manufacture

Electrical device making

29609, 83 32, 310 42, 310216, 310254, H02K 1502

Patent

active

039836215

ABSTRACT:
One disclosed method involves punching winding leg and yoke laminations from a strip, subsequently forming a core yoke section, and forming a core winding leg (or coil core). Thereafter, an excitation coil is supported on the coil core, and the coil core and core yoke are assembled in reoriented relation relative to the relative orientation of the laminations when punched from the original strip. The winding leg laminations are reoriented 180 degrees, about a longitudinally extending axis, so that a first surface of the original strip material which faces one direction, as it is punched from the strip, faces an opposite direction in the winding leg section in a finished motor.
The geometrical configuration of the laminations prevent a random location of the winding legs relative to the yoke laminations, yet permits two distinctly different relative lamination orientations. A longitudinal reference line along the winding leg is identified, and keying or interlocking means symmetrical about the reference line are provided, but the winding accommodating portion of the winding leg is asymmetrical about the same reference line. Therefore, two distinct winding window openings may be provided, depending on the orientation of the winding leg.

REFERENCES:
patent: 1635064 (1927-07-01), Wagner
patent: 1917289 (1933-07-01), Benson
patent: 2807735 (1957-09-01), Naul
patent: 3024377 (1962-06-01), Tupper

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