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David B. Clifton
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Leander, TX, US
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Patents Grants
last 30 patents
Information
Patent Grant
Integrated continuous power system assemblies having multiple nozzl...
Patent number
6,777,823
Issue date
Aug 17, 2004
Active Power, Inc.
Gail Roberts
F05 - INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF...
Information
Patent Grant
Method and apparatus having a turbine working in different modes fo...
Patent number
6,512,305
Issue date
Jan 28, 2003
Active Power, Inc.
Joseph F. Pinkerton
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Method and apparatus for providing a continuous supply of electric...
Patent number
6,463,738
Issue date
Oct 15, 2002
Active Power, Inc.
Joseph F. Pinkerton
F01 - MACHINES OR ENGINES IN GENERAL ENGINE PLANTS IN GENERAL STEAM ENGINES
Information
Patent Grant
Method and apparatus for providing an uninterruptible supply of ele...
Patent number
6,255,743
Issue date
Jul 3, 2001
Active Power, Inc.
Joseph F. Pinkerton
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Uninterruptible power supply utilizing thermal energy source
Patent number
6,192,687
Issue date
Feb 27, 2001
Active Power, Inc.
Joseph F. Pinkerton
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Step switch cycloconverter utilizing multi-tap armature
Patent number
6,124,702
Issue date
Sep 26, 2000
Active Power, Inc.
Joseph F. Pinkerton
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Magnetically levitated robot and method of increasing levitation force
Patent number
5,980,193
Issue date
Nov 9, 1999
Magnetic Bearing Technologies, Inc.
David B. Clifton
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Grant
Energy storage flywheel apparatus and methods
Patent number
5,969,457
Issue date
Oct 19, 1999
Active Power, Inc.
David B. Clifton
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Energy storage flywheel apparatus and methods
Patent number
5,955,816
Issue date
Sep 21, 1999
Active Power, Inc.
David B. Clifton
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Energy storage flywheel emergency power source and methods
Patent number
5,932,935
Issue date
Aug 3, 1999
Active Power, Inc.
David B. Clifton
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
High inertia inductor-alternator
Patent number
5,929,548
Issue date
Jul 27, 1999
Active Power, Inc.
Joseph F. Pinkerton
H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information
Patent Grant
Motor/generator and axial magnetic bearing utilizing common magneti...
Patent number
5,920,138
Issue date
Jul 6, 1999
Active Power, Inc.
David B. Clifton
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Energy storage flywheel apparatus and methods
Patent number
5,905,321
Issue date
May 18, 1999
Active Power, Inc.
David B. Clifton
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Integrated motor/generator/flywheel utilizing a solid steel rotor
Patent number
5,731,645
Issue date
Mar 24, 1998
Magnetic Bearing Technologies, Inc.
David B. Clifton
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Magnetic bearing system including a generator
Patent number
5,525,848
Issue date
Jun 11, 1996
Magnetic Bearing Technologies, Inc.
Joseph F. Pinkerton
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Null flux magnetic bearing with cross-connected loop portions
Patent number
5,471,105
Issue date
Nov 28, 1995
Magnetic Bearing Technologies, Inc.
David B. Clifton
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Magnetic bearing with closed loops which move in AC electromagnet f...
Patent number
5,345,128
Issue date
Sep 6, 1994
Magnetic Bearing Techologies, Inc.
Joseph F. Pinkerton
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Electronic devices using discrete, contained charged particle bundl...
Patent number
5,208,844
Issue date
May 4, 1993
Jupiter Toy Company
Harold E. Puthoff
H01 - BASIC ELECTRIC ELEMENTS