Sidney M Bell

Author:

Sidney Bell

ISBN #:

0804690235

US Patent:

6720692, Apr 13, 2004

Filed:

Dec 22, 2000

Appl. No.:

09/748102

Inventors:

Sidney Bell - Athens GA

Assignee:

Reliance Electric Technologies, LLC - Mayfield Heights OH

International Classification:

H02K 524

US Classification:

310 85, 310 86, 310 43, 310215, 310254

Abstract:

An electromechanical machine includes a stator fixed with respect to a housing structure and a rotor fixed with respect to a driven shaft. The stator includes a magnetically permeable core having a plurality of parallel winding slots containing conductive windings. Coilheads are located at opposite axial ends of the magnetically permeable core where the windings turn to extend down a parallel winding slot. The motor is equipped with an electrostatic shield arrangement to reduce capacitive coupling between the stator and rotor during operation. The shield arrangement comprises a grounded conductive layer separated from the conductive windings of the stator by an insulative layer of cured resin material. Preferably, the conductive layer may be formed of a conductive paint.

US Patent:

59790873, Nov 9, 1999

Filed:

Jan 16, 1998

Appl. No.:

9/008345

Inventors:

Sidney Bell - Athens GA
Michael J. Melfi - Euclid OH
Stanley E. Wallace - Athens GA

Assignee:

Reliance Electric Industrial Company - Cleveland OH

International Classification:

H02K 112

US Classification:

36254

Abstract:

An electromechanical machine includes a stator fixed with respect to a housing structure and a rotor fixed with respect to a driven shaft. The stator includes a magnetically permeable core having a plurality of parallel winding slots containing conductive windings. Coilheads are located at opposite axial ends of the magnetically permeable core where the windings turn to extend down a parallel winding slot. The motor is equipped with electrostatic shield arrangements in the winding slots and coilheads to reduce capacitive coupling between the stator and rotor during operation.

US Patent:

61217077, Sep 19, 2000

Filed:

Jan 22, 1998

Appl. No.:

9/010797

Inventors:

Sidney Bell - Athens GA
Jerry L. Martin - Gainesville GA
Grayson W. Lambert - Gainesville GA

Assignee:

Reliance Electric Technologies, LLC - Thousand Oaks CA

International Classification:

H02K 304
H02K 312

US Classification:

310179

Abstract:

A technique for forming stator coils for an electric motor is disclosed. The technique includes forming D-shaped or generally trapezoidal coils having a closed loop defining a long side and a short side joined by end portions. The coils are installed in a stator core having a plurality of slots formed around its inner periphery. The long sides of the coils are disposed in a predetermined position within these slots, such as in a lower position, while the short sides are disposed in opposite positions, such as in upper positions. The long sides extend beyond the short sides at end regions of the stator core. The end portions of each coil wrap around the ends of the stator core and incline from the long side of the respective coil to the short side thereof. Crossing points are established between the long side of each coil and end portions of adjacent coils. The crossing points are located in predetermined positions and the coils may be taped to insulate the long sides from the end portions at the locations of the crossing points.

US Patent:

54747996, Dec 12, 1995

Filed:

Oct 13, 1992

Appl. No.:

7/960135

Inventors:

James L. Thigpen - Gainesville GA
Walter G. Stiffler - Mentor OH
James B. Keys - Oakwood GA
David T. McKinney - Gainesville GA
Sidney Bell - Athens GA

Assignee:

Reliance Electric Industrial Company - Cleveland OH

International Classification:

B05D 512

US Classification:

427104

Abstract:

There is disclosed a method and apparatus for coating an electromagnetic coil, particularly stator coils for an electric motor, with an insulating catalyzed resin material. The catalyzed resin material is a two component material comprising an epoxy resin and a catalyst. The catalyzed resin material is a free flowing liquid at a first temperature and begins to cure rapidly at a second elevated temperature. The stator coils are first heated by supplying current to the stator coils to raise the temperature of the stator coils to the first temperature. The free flowing liquid catalyzed resin material is dispensed through nozzles onto the stator coils as the stator coils and the nozzles move relative to each other. After the liquid catalyzed resin material has been dispensed in a predetermined amount, at predetermined locations, for predetermined times, the catalyzed resin material is allowed to penetrate the stator coils. The temperature of the stator coils is then raised to the second temperature at which the curing of the catalyzed resin material occurs rapidly.

US Patent:

62022857, Mar 20, 2001

Filed:

Jan 16, 1998

Appl. No.:

9/008043

Inventors:

Sidney Bell - Athens GA

Assignee:

Reliance Electric Technologies, LLC - Thousand Oaks CA

International Classification:

H02K 524
H02K 1512

US Classification:

29596

Abstract:

An electromechanical machine includes a stator fixed with respect to a housing structure and a rotor fixed with respect to a driven shaft. The stator includes a magnetically permeable core having a plurality of parallel winding slots containing conductive windings. Coilheads are located at opposite axial ends of the magnetically permeable core where the windings turn to extend down a parallel winding slot. The motor is equipped with an electrostatic shield arrangement to reduce capacitive coupling between the stator and rotor during operation. The shield arrangement comprises a grounded conductive layer separated from the conductive windings of the stator by an insulative layer of cured resin material. Preferably, the conductive layer may be formed of a conductive paint.

US Patent:

56859104, Nov 11, 1997

Filed:

Nov 15, 1995

Appl. No.:

8/556448

Inventors:

James L. Thigpen - Gainesville GA
Walter G. Stiffler - Mentor OH
James B. Keys - Oakwood GA
David T. McKinney - Gainesville GA
Sidney Bell - Athens GA

Assignee:

Reliance Electric Industrial Company - Cleveland OH

International Classification:

B05C 700

US Classification:

118666

Abstract:

There is disclosed a method and apparatus for coating an electromagnetic coil, particularly stator coils for an electric motor, with an insulating catalyzed resin material. The catalyzed resin material is a two component material comprising an epoxy resin and a catalyst. The catalyzed resin material is a free flowing liquid at a first temperature and begins to cure rapidly at a second elevated temperature. The stator coils are first heated by supplying current to the stator coils to raise the temperature of the stator coils to the first temperature. The free flowing liquid catalyzed resin material is dispensed through nozzles onto the stator coils as the stator coils and the nozzles move relative to each other. After the liquid catalyzed resin material has been dispensed in a predetermined amount, at predetermined locations, for predetermined times, the catalyzed resin material is allowed to penetrate the stator coils. The temperature of the stator coils is then raised to the second temperature at which the curing of the catalyzed resin material occurs rapidly.

US Patent:

60113383, Jan 4, 2000

Filed:

Jul 10, 1998

Appl. No.:

9/113490

Inventors:

Sidney Bell - Athens GA
David M. Byrd - Athens GA

Assignee:

Reliance Electric Industrial Company - Cleveland OH

International Classification:

H02K 100
H02K 304

US Classification:

310184

Abstract:

An electromechanical machine includes a stator fixed with respect to a housing structure and a rotor fixed with respect to a driven shaft. The stator includes a magnetically permeable core having a plurality of parallel winding slots containing driven windings. Coilheads are located at opposite axial ends of the magnetically permeable core where the windings turn to extend down a parallel winding slot. The motor is also equipped with an auxiliary winding arrangement to reduce capacitive coupling between the stator and rotor during operation. The auxiliary winding arrangement comprises grounded auxiliary windings located in the winding slots and the inside surface of the coilheads to interpose the driven windings and the rotor.