Fiskars Finland Oy Ab

Marathon Electric Manufacturing Corporation

Allen J Zaitz

Millis V Parshall

An A.C. alternator includes laminated stator core with an tubular frame formed from a plate member which is wrapped tightly about the core and with the opposed end edges of the frame plate welded to the core. The stator laminations having a square perimeter with the corners rounded with a radius of the final core diameter. The corner portion are further provided with a control welding notch and a plurality of circumferentially distributed openings. The laminations are stacked in rotated relation to form the core with a true constant diameter. Each lamination is rotated in the same direction of rotation for 120 degrees relative to the adjacent laminations. The multiple openings in the corner portions are constructed and arranged such that the rotating laminations aligned the similar openings and define a plurality of unobstructed axial cooling passages. The laminations are rotated to establish skewed elongated slots, central notches and air flow openings. At least one of the corners is especially formed with two offset portions with a rigid bar welded to the inner recess and defines a frame connection surface. A weld bar is secured to the inner bar and outer recess in axial alignment with the core axis. The frame plate is wrapped with the seam aligned with the weld bar and the frame welded in place.

Stator core unit for dynamoelectric machine

A pinking shears having a pair of blades pivotally connected together by a bolt and having cooperative teeth formed along their leading edges and having handles at the ends of the blades opposite said teeth. A non-metallic spacer and pressure producing ridge member is located between the blades and has an apertured spacer portion through which the bolt extends and which serves to provide rough blade separation. The member also has a pressure producing ridge located at the handle side of said bolt and for bearing against the blades to produce cutting pressure between the teeth of the blades. The blades have tapered leads which cooperate with one another as the shears are closed to provide gradual smooth engagement of the blades. Each of the blades also has an alignment land located outwardly in respect to the bolt and the tapered leads, the alignment lands abutting against one another when the shears are closed and the opposed teeth are brought into initial contact with one another to provide exact positioning of the blades and ensuring smooth engagement of the teeth with one another. One of the teeth of one of the blades located nearest the bolt has a cut-away relief portion to provide smooth engagement of the teeth.

Growing community of inventors

Wausau, WI, United States of America

Allen J Zaitz