Method of making a secondary for use in induction motors
AssigneeBLUM GmbH
InventorEugen Nolle
Life of this patent
Estimating the term…
Abstract
The core of the secondary for use in a linear or other induction motor is a ladder-like stamping with two spaced apart rails and a number of bars extending between and having end portions of one piece with the rails. The bars of the cage can be inserted into the recesses of a core, and such recesses can be provided in one side or in two opposite sides of the core. Each recess can receive a single bar or the bars of two or more discrete cores. The bars can be confined in their recesses by slidable closures or by plugs of a hardened adhesive, a synthetic resin or an impregnating agent.
Claims35
A method of making a secondary for use in an induction motor comprising the steps of:
- (a) providing a core with at least one set of recesses;
- (b) forming at least two substantially ladder-shaped cages, each said cage having two spaced apart rails and bars extending between, and of one piece with, the rails;
- and
- (c) inserting the bars of each said cage into respective recesses of the core, so as to stack the bars in the recesses and at least partially fill the recesses with stacked bars.
A method of making a secondary for use in an induction motor, comprising the steps of:
- (a) providing a plurality of discrete cores;
- (b) forming at least one substantially ladder-shaped cage, each said cage having two spaced apart rails and bars extending between, and of one piece with the rails, and windows which alternate with said bars;
- and
- (c) inserting the cores into respective windows of the at least one cage, each said core being formed of at least one package of neighboring layers having sections which extend into said windows upon completion of said insertion step, each of said cores at least partially filling a respective window.
A method of making a secondary for use in an induction motor, comprising the steps of:
- (a) forming at least one substantially ladder shaped cage, each said cage having two spaced apart rails and bars extending between, and of one piece with the rails, and windows which alternate with said bars;
- and
- (b) inserting discrete cores at least partially into respective windows of the cage, each of said cores being formed of at least one package of neighboring layers having sections which extend into said window upon completion of said insertion step, each of said cores at least partially filling a respective window.
Dependencies are inferred from the claim text.