U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Stator body with laminated compression plates

Patent 4638199 Issued on January 20, 1987. Estimated Expiration Date: Icon_subject July 12, 2005. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Patent References

1689187

2795714

3619674

Gas cooled flux shield for dynamoelectric machine
Patent #: 4031422
Issued on: 06/21/1977
Inventor: Armor ,   et al.

System for providing uniform axial expansion of a stator core
Patent #: 4227109
Issued on: 10/07/1980
Inventor: Mulach

Liquid-cooled electric machine
Patent #: 4322645
Issued on: 03/30/1982
Inventor: Spirk ,   et al.

Dynamoelectric machine with stator coil end turn support system
Patent #: 4488079
Issued on: 12/11/1984
Inventor: Dailey ,   et al.

Apparatus for preventing overflux damage to stator cores
Patent #: 4494030
Issued on: 01/15/1985
Inventor: Mulach ,   et al.

Dynamoelectric machine with end turn support assembly having fasteners with locking devices Patent #: 4501985
Issued on: 02/26/1985
Inventor: Dobson ,   et al.

Inventors

Application

No. 06/754213 filed on 07/12/1985

US Classes:

310/91, Supports310/217, Securing laminae310/259, Core assembly310/260, End turn supports310/45, Impregnated or coated310/58Circulation

Examiners

Primary: Skudy, R.

Attorney, Agent or Firm

International Class

H02K 1/16 (20060101)

Foreign Application Priority Data

1984-08-09 CH

Abstract

The laminated stator body of a large turbo-generator consists of a stack of laminations (1) comprising laminated compression plates (2), which stack is clamped together by means of tie plates (3) and tension bolts (8). The end face of the compression plate is stepped in the axial and radial direction. The tie plates have either a contour which matches the outside contour of the compression plate (2) or are smooth and, in the latter case, are supported by arch pressure in the radial direction. The elaborate machining of the compression plate end face, resulting in the elimination of lamination shorts, can thus be omitted without impairing the electrical and magnetic effects of the laminated compression plate on the end field of the machine.

Other References

  • Swiss Journal "Bulletin SEV/VSE", vol. 68, (1977), No. 14, pp. 685-689
  • Material in Electrical Machines-Today and Tomorrow-R. Noser 22nd Bernard Price Mem. Lecture, read before Cape Western Centre on Sep. 12, 1973
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