Double casing for electric rotating machine stator

Details Double casing for electric rotating machine stator Double casing for electric rotating machine stator

1988-02-17

1989-06-06

Salce, Patrick R.

Electrical generator or motor structure

Dynamoelectric

Rotary

29596, 310 89, 310254, H02K 526, F16L 5512

Patent

active

048374687

ABSTRACT:
A double casing for an electric rotating machine stator includes two pipes placed coaxially one inside the other. The pipes have therethrough aligned openings for receiving screws for mounting polar supports to the inside of the casing. Each hole in the outer pipe is formed by performing a punching deformation operation of an initially cylindrical hole in the outer pipe. This forms a countersink dimensioned to accommodate the head of a respective screw. Such operation also forms a boss of the material of the outer pipe and causes such boss to extend inwardly from the countersink into the corresponding hole in the inner pipe.

REFERENCES:
patent: 2903610 (1959-09-01), Bessiere
patent: 3200275 (1965-08-01), Lindgren
patent: 3200475 (1965-08-01), Weber et al.
patent: 4464595 (1984-08-01), Hamano et al.
patent: 4760634 (1988-08-01), Rapp

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