Ahmed K Kalafala from 137 Timothy Ln, Schenectady, NY 12303, age 78, Phone: 5183551531

Compact Gradient Coil Assembly For Mri Apparatus
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US Patent:

6525536, Feb 25, 2003
Filed:

Jan 23, 2001
Appl. No.:

09/767299
Inventors:

Constantinos Minas - Slingerlands NY
Yuri Lvovsky - Clifton Park NY
Ahmed Kamal Kalafala - Albany NY
Assignee:

Intermagnetics General Corporation - Latham NY
International Classification:

G01V 300
US Classification:

324318, 324319, 324320
Abstract:

A cylindrical magnet assembly for use in magnetic resonance imaging apparatus has a radially compact construction which eliminates prior manufacturing steps. Recesses are formed in insulation layers for receiving complimentary shaped bus bars. Because the bus bars are dimensioned to fit flush within the recesses, they do not add to the radial growth of the magnet assembly.

Superconducting Current Leads For A Cryogenless Superconducting Magnetic Energy Storage Device
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US Patent:

53029283, Apr 12, 1994
Filed:

Aug 3, 1992
Appl. No.:

7/923684
Inventors:

Evangelos T. Laskaris - Schenectady NY
Ahmed K. Kalafala - Albany NY
Assignee:

General Electric Company - Schenectady NY
International Classification:

H01F 100
US Classification:

335216
Abstract:

This invention relates to current leads for a superconducting magnet system of the type that are constructed of two-stages. Such structures of this type, generally, operate from ambient temperature to the temperature at the thermal shield and from the temperature of the thermal shield to that of the magnet such that ohmic losses are reduced.

Method Of Determining Coil Arrangement Of An Actively Shielded Magnetic Resonance Magnet
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US Patent:

47244127, Feb 9, 1988
Filed:

Aug 3, 1987
Appl. No.:

7/081055
Inventors:

Ahmed K. Kalafala - Albany NY
Assignee:

General Electric Company - Schenectady NY
International Classification:

H01F 500
US Classification:

335299
Abstract:

A method of making an actively shielded magnet is provided which uses a Monte Carlo simulation to minimize the amount of total conductor material used in a coil arrangement. This method reduces stray field while providing superior magnetic field homogeneity in the working volume of the magnet. Each coil contributes to the overall homogeneity of the magnet.

Apparatus And Method For Impregnating Superconductor Windings
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US Patent:

51677156, Dec 1, 1992
Filed:

Mar 4, 1991
Appl. No.:

7/664155
Inventors:

Ahmed K. Kalafala - Albany NY
Karl F. Schoch - Scotia NY
Dan A. Gross - Schenectady NY
Evangelos T. Laskaris - Schenectady NY
Assignee:

General Electric Company - Schenectady NY
International Classification:

B05C 302
B05C 1111
US Classification:

118712
Abstract:

A method and apparatus for impregnating the superconductors on a superconductor winding with epoxy such that a vacuum/pressure containment vessel, in which the winding is placed, allows epoxy to be introduced into the vessel whereby the epoxy eventually impregnates the superconductors through the application of various evacuating, pressuring and epoxy transporting steps.

Superconducting Magnetic Energy Storage Device
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US Patent:

53015070, Apr 12, 1994
Filed:

Aug 3, 1992
Appl. No.:

7/923683
Inventors:

Evangelos T. Laskaris - Schenectady NY
Ahmed K. Kalafala - Albany NY
Assignee:

General Electric Company - Schenectady NY
International Classification:

F25B 1900
H01F 722
US Classification:

62 511
Abstract:

This invention relates to a cryogenless superconducting magnet system of the type that is attached to a utility grid at end-user site and is used to store electrical energy until such time that an electrical disruption occurs in the grid. Structures of this type, generally, allow the stored electrical energy to be released in such a manner that the disruption in the utility grid is negated before it reaches critical loads.

Aperture Sized Disc Shaped End Caps Of A Ferromagnetic Shield For Magnetic Resonance Magnets
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US Patent:

46460454, Feb 24, 1987
Filed:

Mar 25, 1985
Appl. No.:

6/715435
Inventors:

Madabushi V. Chari - Burnt Hills NY
Ahmed K. Kalafala - Albany NY
John D'Angelo - Clifton Park NY
Michael A. Palmo - Ballston Spa NY
Assignee:

General Electric Company - Schenectady NY
International Classification:

H01F 700
US Classification:

335301
Abstract:

A shield for a MR magnet is provided comprising a cylindrical shell of magnetic material surrounding the MR magnet. The cylindrical shell is situated so that its longitudinal axis is coaxial with the magnetic axis of the MR magnet. Two disk shape end caps of magnetic material are secured to either end of the cylindrical shell. The end caps each define a central aperture extending longitudinally through the disk, with the radial extent of each of the apertures sized so that the perturbation of the field in the working volume of the MR magnet due to the cylindrical shell is compensated for.

Superconducting Winding And Support Structure
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US Patent:

52851818, Feb 8, 1994
Filed:

Aug 3, 1992
Appl. No.:

7/923682
Inventors:

Evangelos T. Laskaris - Schenectady NY
Ahmed K. Kalafala - Albany NY
Assignee:

General Electric Company - Schenectady NY
International Classification:

H01F 100
US Classification:

335216
Abstract:

Composite superconducting windings of the type that have superconductor wires wound with glass cloth, an array of axial insulated copper wires, copper foil straps of expanded metal or perforated foil which are positioned between winding layers to reinforce the composite winding and enhance the thermal conductivity of the winding, and an overwrap of high strength stainless steel wires to provide additional rigidity to the composite winding. Structures of this type, generally, form a self-supported, structurally robust composite winding and support structure that is capable of withstanding the hoop and axial stresses that result from the electromagnetic loads created by the superconductor.

Ahmed K Kalafala