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Gregory Leibovich

from Fullerton, CA
Age ~90

Gregory Leibovich Phones & Addresses

  • 2218 Ardemore Dr, Fullerton, CA 92833 (714) 870-6448 (714) 887-1105
  • 6933 Milwood Ave #47, Canoga Park, CA 91303 (818) 887-1105
  • 213 Calle Fanillia, Oak Park, CA 91377 (818) 887-1105
  • 2218 Ardemore Dr, Fullerton, CA 92833

Work

Position: Professional/Technical

Education

Degree: Graduate or professional degree

Resumes

Resumes

Gregory Leibovich Photo 1

Chief Engineer

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Work:

Chief Engineer
Gregory Leibovich Photo 2

Chief Eng At Ducommun Labarge Tech

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Location:
United States
Industry:
Aviation & Aerospace

Publications

Us Patents

Compound Short-Circuit Induction Machine And Method Of Its Control

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US Patent:
47616024, Aug 2, 1988
Filed:
Jul 10, 1986
Appl. No.:
6/884045
Inventors:
Gregory Leibovich - Fullerton CA
International Classification:
H02P 540
US Classification:
318816
Abstract:
An induction machine having a stator carrying phase coils divided into at least two independently fed sets of coils, with a rotor or armature carrying one or more loop members, each of which is a short-circuited, continuous isolated loop conductor member having elements thereof positioned and received within the slots of the armature in a generally serpentine configuration forming at least two open loop portions, each loop portion being in a spatially related position to a corresponding coil of the stator structure, with each conductor element within a slot phasing or linking the fluxes of one stator pole. The machine may be single phase or polyphase. At least one stator phase coil of a set includes a controllable device in circuit relation therewith to enable control of one stator coil relative to the other, either in current magnitude or in current phase shift, the controllable device being either a silicon controlled rectifier or a triac. With the loop member, and by continuous control of the controllable device an approximately linear speed torque relation is obtained.

Proportional Permanent Magnet Force Actuator

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US Patent:
49280287, May 22, 1990
Filed:
Feb 23, 1989
Appl. No.:
7/314753
Inventors:
Gregory Leibovich - Fullerton CA
Assignee:
Hydraulic Units, Inc. - Duarte CA
International Classification:
H02K 3312
H01F 708
US Classification:
310 23
Abstract:
A direct current linear drive actuator including first and second electromagnets, each having a cup-shaped ferromagnetic stator core with an axially extending concentric annular main pole member on the centerline thereof. First and second independent stator coils are recieved within the annular recesses of the stator cores. The open ends of the stator cores face one another with a washer-shaped ferromagnetic common pole member, positioned intermediate the open ends in perpendicular relation to the stator main poles. The armature is spring biased to a neutral position and includes a disc-shaped permanent magnet configured for being received within the inner opening of the common pole and is sandwiched between first and second disc-shaped pole members, each having an overall configuration sufficient to overlap the perimeter of the common pole in the radial direction. Air gaps are formed between the stator poles and the armature poles. Energization of the coils simultaneously provides a first attractive force between a first armature pole and the common pole, a repulsive force between the first armature pole and a first main electromagnet pole, a second attractive force between the second armature pole and the second main electromagnet pole and a second repulsive force between the second armature pole and the common pole.

Variable Transformer, Reactor And Method Of Their Control

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US Patent:
48374970, Jun 6, 1989
Filed:
Dec 29, 1987
Appl. No.:
7/128958
Inventors:
Gregory Leibovich - Fullerton CA
International Classification:
G05F 304
US Classification:
323345
Abstract:
A variable transformer, reactor having a core combining at least two complete core elements wiht a common yoke; primary winding divided into two independently fed sets of phase coils wound in opposite direction, arranged on symmetrical legs of core elements and separated by the common yoke; secondary winding with each phase coil divided into two wound in opposite direction portions carried by symmetrical core legs, adjacent to the primary coils and separated by common yoke. The secondary short-circuited reactor winding is reduced to at least one close loop member with loop portions separated by the common yoke. The single, polyphase apparatus has at least one primary coil per set that includes a controllable device in circuit relation therewith to enable control of one primary coil relative to the other, either in current magntidue or in current phase shift. The controllable device being either a silicon control rectifier, triac or transistor. By continuous control of the controllable device an apparatus variable output parameters are obtained.
Gregory Leibovich from Fullerton, CA, age ~90 Get Report