 Metallic coated article of improved environmental resistance |
| What is claimed is: 1. A metallic article comprising: a substrate of a superalloy based on an ... |
|
| D.C. Scan panel |
| Accordingly, it is an object of the present invention to provide a D.C. gas discharge display panel ... |
|
| Battery termination structure |
| I claim: 1. In a battery having a case, a termination structure comprising: means on said case ... |
|
| Galvanic cell comprising solid proton conductor as electrolyte |
| We claim: 1. In a galvanic cell having a metal oxide or metal sulfide electrode, a metal electrode, ... |
|
| Time responsive variable voltage power supply |
| What is claimed is: 1. A variable voltage power supply comprising: (a) an input adapted to be ... |
|
| Unitized battery package |
| Briefly, according to the invention, there is provided an electrical energy source, comprising a ... |
|
| Improved battery assembly |
| In accordance with the present invention, an improved battery and an improved battery contact ... |
|
| Dump valve |
| These and other objects and advantages of the present invention, which will appear from the ... |
|
| Semiconductor article and preparation thereof |
| An object of the present invention is to provide a semiconductor article which will not generate ... |
|
| Acid functional and epoxy functional polyester resins |
| Accordingly, a linear tertiary aliphatic carboxyl functional polyester resin is provided, ... |
|
|
Ripple-shaped tightening strip for retaining electric machine winding
| Details |
Inventors: Tsirkin, Mark Zakharovich; Kogan, Viktor Ovshievich; Polyakov, Rudolf Semenovich; Presnov, Jury Leonidovich; Khanukova, Elina Sergeevna;
Assignee:
Primary Examiner: Duggan; Donovan F.
Assistant Examiner:
Attorney, Agent or Firm: Lackenbach, Lilling & Siegel
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. |
|
DETAILED DESCRIPTION What is claimed is: 1.
An arrangement for retaining windings of an electric machine to restrict movement of the winding bars in radial slots of the core, comprising: an insulated winding bar disposed in an open slot of the core; a member retaining said bar extending longitudinally along said slot and spaced from said bar by a clearance; a ripple-shaped tightening strip disposed in said clearance between said bar and said retaining member and being in a compressed state, said ripple-shaped tightening strip being composed of a rigid insulating, essentially sheet, material and having elastomeric resilient members disposed in the troughs of said rippled-shaped tightening strip.
2.
An arrangement according to claim 1, in which said elastomeric resilient members are essentially of a partially cylindrical shape to match the troughs of said ripple-shaped tightening strip.
3.
An arrangement according to claim 1, in which said elastomeric resilient members have a thickness smaller than the full depth of the troughs of said uncompressed ripple-shaped tightening strip.
4.
An arrangement according to claim 1, in which said elastomeric resilient members are fixed in the troughs of said ripple-shaped tightening strip by means of bonding.
5.
An arrangement according to claim 1, in which said elastomeric resilient members are composed of a heat-resistant polymer material.
6.
An arrangement according to claim 5, in which said elastomeric resilient members are composed of polyester urethane epoxy with an epoxy-group content of 6 to 10 per cent.
7.
An arrangement according to claim 5, in which said elastomeric resilient members are composed of low-molecular methyl-phenyl-siloxane synthetic rubber.
Description:
The present invention relates to an arrangement for retaining electric windings within the core slots of an electric machine, and more particularly it relates to ripple-shaped tightening strips for retaining electric machine windings within the radial slots of the stator core
|
|
Fuel Cells 
