Gale A Jallen

US Patent:

45300720, Jul 16, 1985

Filed:

Dec 10, 1979

Appl. No.:

6/102096

Inventors:

Gale A. Jallen - Roseville MN

Assignee:

Control Data Corporation - Minneapolis MN

International Classification:

G11C 1908

US Classification:

365 27

Abstract:

In a bubble memory package, a contoured, shaped magnet and filler plate combination is provided to shape the magnetic field in a uniform fashion to prevent the loss of magnetic flux density which normally tends to occur in the center of the magnet area of a planar, uniformly thick magnet.

US Patent:

44619570, Jul 24, 1984

Filed:

Jun 17, 1982

Appl. No.:

6/389523

Inventors:

Gale A. Jallen - Roseville MN

Assignee:

Control Data Corporation - Minneapolis MN

International Classification:

F03D 704
F03D 700
F03D 702
F03D 900

US Classification:

290 44

Abstract:

A wind electric generator employs a freewheeling clutch and an induction generator having several synchronous speeds. By selecting the synchronous speed as a function of the ambient wind speed, the generator can be made to operate more efficiently and without overloading. The freewheeling clutch which connects the generator to the wind turbine prevents the generator from acting as a motor when connected to a power grid, and wasting energy in turning the wind turbine.

US Patent:

46928987, Sep 8, 1987

Filed:

Nov 6, 1980

Appl. No.:

6/204728

Inventors:

Gale A. Jallen - Roseville MN
Gene P. Bonnie - Bloomington MN

Assignee:

Control Data Corp. - Minneapolis MN

International Classification:

G11C 1908

US Classification:

365 27

Abstract:

A bias magnet for a bubble memory device is comprised of a single material low permeability magnet contoured to enhance the magnetic field in the central area of the magnet and is adapted to be slightly larger than the bubble memory chip and in thermal contact therewith, the entire bubble memory chip and bias magnet structure to be surrounded by the rotating magnetic field drive coil structure.

US Patent:

54615283, Oct 24, 1995

Filed:

Dec 28, 1993

Appl. No.:

8/174140

Inventors:

Beat G. Keel - Prior Lake MN
Gale Jallen - Roseville MN
Paul A. Jallen - Brooklyn Park MN
Lance E. Stover - Eden Prairie MN
Halden W. Larson - Mound MN

Assignee:

Seagate Technology, Inc. - Scotts Valley CA

International Classification:

G11B 517

US Classification:

360124

Abstract:

A servo head in a disc file data storage system includes a servo transducer and a coil which are connected so that noise induced by a nearby writing data head cancels. The servo transducer, mounted on a slider, reads information stored on a servo disc. The coil, also mounted on the slider, is connected to the servo transducer to produce an output signal so that noise signals induced in the servo transducer by operation of the data head tend to be canceled by noise signals induced in the coil by operation of the data head.