Ripple-shaped tightening strip for retaining electric machine wi

Details Ripple-shaped tightening strip for retaining electric machine wi Ripple-shaped tightening strip for retaining electric machine wi

1977-04-19

1978-09-26

Duggan, Donovan F.

Electrical generator or motor structure

Dynamoelectric

Rotary

H02K 348

Patent

active

041173627

ABSTRACT:
A ripple-shaped tightening strip disposed in radial slots of the core of an electric machine stator between the slot wedge and winding bar and comprising a rippled insulating member and an elastomeric resilient member fixed in the troughs of the rippled member. Such a strip has an increased strength, provides for a considerable total radial force provides for a sufficient take-up of the clearance between the slot wedge and the winding bar to compensate for its variations in a radial direction, caused by heat and electromagnetic forces when the electric machine is in operation.

REFERENCES:
patent: 1555065 (1925-09-01), Lindquist
patent: 2922058 (1960-01-01), Bacon
patent: 2945140 (1960-07-01), Drabik et al.
patent: 3009073 (1961-11-01), Drabik et al.
patent: 3243622 (1966-03-01), Whittlesey
patent: 3391294 (1968-07-01), Moxie et al.
patent: 3393335 (1968-07-01), Pletenik et al.
patent: 3594597 (1971-07-01), Kildishev et al.
patent: 3780325 (1973-12-01), Frankenhauser
patent: 3949255 (1976-04-01), Brown et al.
patent: 3976901 (1976-08-01), Liptak et al.

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