Russell E Tompkins

US Patent:

41553977, May 22, 1979

Filed:

May 5, 1978

Appl. No.:

5/903140

Inventors:

Vernon B. Honsinger - Ballston Lake NY
Russell E. Tompkins - Scotia NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

B22D 1106

US Classification:

164 5

Abstract:

Liquid amorphous metal alloy is manufactured into shaped laminations ready for assembly in an inductive component in one process. The rotating chill surface to which the melt is delivered has high thermal conductivity metal in a pattern corresponding to the shaped lamination and is surrounded by thermally insulating material. Melt coming in contact with the high thermal conductivity metal becomes amorphous and that contacting the thermally insulating areas cools more slowly and becomes crystalline. The brittle crystalline scrap is broken away from the strip of laminations and is collected and recycled to the melt.

US Patent:

42820464, Aug 4, 1981

Filed:

Jul 16, 1979

Appl. No.:

6/058062

Inventors:

Peter G. Frischmann - Scotia NY
Fred E. Luborsky - Schenectady NY
Russell E. Tompkins - Scotia NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01F 100

US Classification:

148121

Abstract:

A hard magnetic article made by casting a magnetically soft amorphous metal ribbon and shaping it to the form and size of the desired permanent magnet article, and then heat treating the resulting soft magnetic body and thereby converting the metal of the ribbon to the hard magnetic state.

US Patent:

43563775, Oct 26, 1982

Filed:

Feb 19, 1981

Appl. No.:

6/235811

Inventors:

James F. Norton - Alplaus NY
Gerald B. Kliman - Schenectady NY
Russell E. Tompkins - Scotia NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

B23K 1500

US Classification:

219121EH

Abstract:

Amorphous metal ribbon and thin conventional magnetic material is fully cut through by an electron beam and has no or minimal bead on the edge. The ribbon is bent around a roller while under the electron beam and centrifugal force removes molten metal from the cut. An alternative method is to partially cut through and mechanically deform the material to break the thinned section metal bridges remaining below the cut. Motor laminations so cut have negligible increase in thickness and stack compactly.

US Patent:

43885454, Jun 14, 1983

Filed:

Jun 10, 1981

Appl. No.:

6/272153

Inventors:

Vernon B. Honsinger - Ballston Lake NY
Russell E. Tompkins - Scotia NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

H02K 2114

US Classification:

310156

Abstract:

A rotor for a self-starting permanent magnet AC motor is comprised of a permanent magnet disk mounted on a shaft of non-magnetic material. The magnet has a direction of magnetization parallel to the axis of the shaft resulting in two poles, one on each face of the magnet. Two disks of current carrying material are mounted on the shaft on either side of the magnet to act as starting coils. Pole pieces are mounted on the shaft and surround the starting disks. Claw-like projections spaced about and extending from the periphery of the pole pieces extend inwardly over the periphery of the magnet and starting disks. The claw-like projections from each pole piece are interlaced forming rotor poles of alternating polarity.

US Patent:

43452299, Aug 17, 1982

Filed:

Mar 2, 1981

Appl. No.:

6/239753

Inventors:

Robert P. Alley - Manlius NY
Russell E. Tompkins - Scotia NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01F 2724

US Classification:

336 83

Abstract:

A lamp ballast has a pair of adjacent gapped "O" magnetic cores made of nested, almost complete loops of amorphous metal strip with the gaps in the loops shaped and arranged under the secondary coil to simulate any type of restricted cross section for shaping the lamp current. A long slender reactor has a similar configuration in which the gaps are staggered; a different embodiment has a long central core of compressed amorphous metal flake and a helical overwrap of ribbon. An alloy of iron, boron, and silicon with a high B. sub. r /B. sub. s ratio is preferred for these inductive devices.

US Patent:

42343607, Nov 18, 1980

Filed:

Apr 21, 1978

Appl. No.:

5/898919

Inventors:

Peter G. Frischmann - Scotia NY
Fred E. Luborsky - Schenectady NY
Russell E. Tompkins - Scotia NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

C21D 104
H01F 100
C22B 4300

US Classification:

148121

Abstract:

A magnetic alloy is cast as an amorphous metal ribbon and wound on a rotor shaft of a hysteresis motor and then heated to crystallize the metal ribbon and greatly increase its coercive force prior to assembling the rotor with the stator of the motor.

US Patent:

40386252, Jul 26, 1977

Filed:

Jun 7, 1976

Appl. No.:

5/693298

Inventors:

Russell E. Tompkins - Scotia NY
Franklin A. Fisher - Pittsfield MA
Robert P. Wanger - Fairfield OH

Assignee:

General Electric Company - Schenectady NY

International Classification:

H01F 1502

US Classification:

336 83

Abstract:

An electrical connector for applications where reliability and safety are needed uses transformer couplings made in two separable sections. Upon clamping together the surrounding metal housing halves, each inductively coupled pair of transformer windings is enclosed by the associated cup-type ferrite magnetic core to minimize undesired interference and result in good magnetic coupling.

US Patent:

42119570, Jul 8, 1980

Filed:

Jan 31, 1979

Appl. No.:

6/007918

Inventors:

Robert P. Alley - Manlius NY
Theodore R. Haller - Schenectady NY
Russell E. Tompkins - Scotia NY

Assignee:

General Electric Company - Schenectady NY

International Classification:

H05B 4116

US Classification:

315276

Abstract:

The magnetic core of a lamp ballast is bifilar wound from inherently thin amorphous metal strip and utilizes the laminations of the magnetic circuit as the plates of a capacitor. The outer yoke of the core encases the coils and is edge-wound from amorphous metal ribbon alternated with insulation to also be the power factor capacitor. The inner core is accordion-pleated or spirally wound and is electrically connected to be the starting capacitor. Cutaways in the inner core cause saturation and shape the lamp current waveform.