Sten R. Gerfast

Person

Mendota Heights, MN, US

People

Patents Grantslast 30 patents

Information Patent Grant
Selecting switching functions using screw-force, on modules having...
- Patent number 10,333,235
- Issue date Jun 25, 2019
- Sten R. Gerfast
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Brushless, ironless stator, single coil motor without laminations
- Patent number 9,018,819
- Issue date Apr 28, 2015
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Efficient circuit for brushless low cogging machine with congruent...
- Patent number 8,581,539
- Issue date Nov 12, 2013
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Generator with output options and low loss windings
- Patent number 8,378,546
- Issue date Feb 19, 2013
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Clip-type label
- Patent number 8,074,325
- Issue date Dec 13, 2011
- Sten R. Gerfast
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Grant
Two terminal variable resistor
- Patent number 7,847,674
- Issue date Dec 7, 2010
- Sten R. Gerfast
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
In-expensive head and upper torso restraint with u-shaped air bag
- Patent number 7,445,284
- Issue date Nov 4, 2008
- Sten R. Gerfast
- B60 - VEHICLES IN GENERAL
Information Patent Grant
Continuous hydrogen and alcohol generator from coal
- Patent number 7,371,265
- Issue date May 13, 2008
- Sten R. Gerfast
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Grant
Abutting clinch-joining method
- Patent number 7,065,854
- Issue date Jun 27, 2006
- Sten R. Gerfast
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Single coil, direct current permanent magnet brushless motor with v...
- Patent number 6,940,238
- Issue date Sep 6, 2005
- McMillan Electric Company
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Single coil, direct current permanent magnet brushless motor with v...
- Patent number 6,850,019
- Issue date Feb 1, 2005
- McMillan Electric Company
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fast acting, re-settable circuit breaker without moving parts
- Patent number 6,628,495
- Issue date Sep 30, 2003
- Sten R. Gerfast
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Drive for handling multiple size information storage media cartridg...
- Patent number 6,220,539
- Issue date Apr 24, 2001
- Imation Corp.
- James S. Anderson
- G11 - INFORMATION STORAGE
Information Patent Grant
Drive for handling multiple size information storage media cartridg...
- Patent number 6,079,653
- Issue date Jun 27, 2000
- Imation Corp.
- James S. Anderson
- G11 - INFORMATION STORAGE
Information Patent Grant
Alignment and latching mechanism in a drive for magnetic data tape...
- Patent number 5,949,611
- Issue date Sep 7, 1999
- Hewlett-Packard Company
- Fred O. Stephens
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape cartridge including an indication device to distinguish betwee...
- Patent number 5,786,967
- Issue date Jul 28, 1998
- Imation Corp.
- Sten R. Gerfast
- G11 - INFORMATION STORAGE
Information Patent Grant
Drive for handling multiple size information storage media cartridg...
- Patent number 5,779,172
- Issue date Jul 14, 1998
- Imation Corp.
- James S. Anderson
- G11 - INFORMATION STORAGE
Information Patent Grant
Belt-driven tape cartridge having an idler roller near each corner
- Patent number 5,695,143
- Issue date Dec 9, 1997
- Imation Corp.
- Sten R. Gerfast
- G11 - INFORMATION STORAGE
Information Patent Grant
Drive for handling multiple size information storage media cartridg...
- Patent number 5,558,291
- Issue date Sep 24, 1996
- Imation Corp.
- James S. Anderson
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape tension enhancement for belt driven tape cartridge corner rollers
- Patent number 5,516,055
- Issue date May 14, 1996
- Minnesota Mining and Manufacturing Company
- Sten R. Gerfast
- G11 - INFORMATION STORAGE
Information Patent Grant
Tape cartridge
- Patent number D366059
- Issue date Jan 9, 1996
- Minnesota Mining and Manufacturing Company
- James J. Evanoff
- D18 - Printing and office machinery
Information Patent Grant
Mechanically incompatible magnetic recording tape cartridges having...
- Patent number 5,480,103
- Issue date Jan 2, 1996
- Minnesota Mining and Manufacturing Company
- Sten R. Gerfast
- G11 - INFORMATION STORAGE
Information Patent Grant
Recording medium annealing process
- Patent number RE34765
- Issue date Oct 25, 1994
- Minnesota Mining and Manufacturing Company
- Jerry L. Alexander
- 156 - Adhesive bonding and miscellaneous chemical manufacture
Information Patent Grant
Spheroidal machine
- Patent number 5,204,570
- Issue date Apr 20, 1993
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Cleaning apparatus for magnetic data tape cartridges
- Patent number 4,984,119
- Issue date Jan 8, 1991
- Minnesota Mining and Manufacturing Company
- Richard A. Backlund
- G11 - INFORMATION STORAGE
Information Patent Grant
Power-reducing circuit for fluorescent and for high-intensity incan...
- Patent number 4,972,123
- Issue date Nov 20, 1990
- Sten R. Gerfast
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Transformerless current-limiting circuit
- Patent number 4,929,871
- Issue date May 29, 1990
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Stable stretched surface recording medium
- Patent number RE33187
- Issue date Mar 27, 1990
- Minnesota Mining and Manufacturing Company
- Jerry L. Alexander
- 428 - Stock material or miscellaneous articles
Information Patent Grant
Dynamoelectric machine having ironless stator coil
- Patent number 4,883,981
- Issue date Nov 28, 1989
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Stator or rotor based on permanent magnet segments
- Patent number 4,814,654
- Issue date Mar 21, 1989
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Three pulse, odd-even motor winding system
- Publication number 20220278580
- Publication date Sep 1, 2022
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Combination motor generator with odd-numbered stator and magnet
- Publication number 20210099060
- Publication date Apr 1, 2021
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Linear series of open jaw coil winding slots
- Publication number 20200076258
- Publication date Mar 5, 2020
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Continuous recharging of driverless electric vehicles without human...
- Publication number 20200001731
- Publication date Jan 2, 2020
- Sten R. Gerfast
- B60 - VEHICLES IN GENERAL
Information Patent Application
Automatic charging when driving on a road having contacts
- Publication number 20190193566
- Publication date Jun 27, 2019
- Sten R. Gerfast
- B60 - VEHICLES IN GENERAL
Information Patent Application
ANCHORING SYSTEM FOR PROSTHETICS
- Publication number 20180168779
- Publication date Jun 21, 2018
- Sten R. Gerfast
- A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
Information Patent Application
Automatic, dual power, inductive and conductive charger for electri...
- Publication number 20170291496
- Publication date Oct 12, 2017
- Sten R. Gerfast
- B60 - VEHICLES IN GENERAL
Information Patent Application
Electric vehicle charger connections made by vehicle motion only
- Publication number 20170291498
- Publication date Oct 12, 2017
- Sten R. Gerfast
- B60 - VEHICLES IN GENERAL
Information Patent Application
Unique magnetic effect and applications
- Publication number 20160225506
- Publication date Aug 4, 2016
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
RADIO-CONTROLLABLE AC-POWERED MOTORS WITH SEVERAL FUNCTIONS
- Publication number 20140327386
- Publication date Nov 6, 2014
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Inexpensive safety alerting devices for munitions and a detector fo...
- Publication number 20140176330
- Publication date Jun 26, 2014
- Sten R. Gerfast
- F42 - AMMUNITION BLASTING
Information Patent Application
Brushless, ironless stator, single coil motor without laminations
- Publication number 20140070651
- Publication date Mar 13, 2014
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Efficient circuit for brushless low cogging machine with congruent...
- Publication number 20100225260
- Publication date Sep 9, 2010
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Continuous hydrogen and alcohol generator from coal
- Publication number 20080196305
- Publication date Aug 21, 2008
- Sten Rutger Gerfast
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Inductive device actuated by body motion
- Publication number 20070228734
- Publication date Oct 4, 2007
- Sten R. Gerfast
- F03 - MACHINES OR ENGINES FOR LIQUIDS WIND, SPRING WEIGHT AND MISCELLANEOUS M...
Information Patent Application
Two terminal variable resistor
- Publication number 20070126549
- Publication date Jun 7, 2007
- Sten R. Gerfast
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Clip-type label
- Publication number 20070000099
- Publication date Jan 4, 2007
- Sten R. Gerfast
- B42 - BOOKBINDING ALBUMS FILES SPECIAL PRINTED MATTER
Information Patent Application
Continuous hydrogen and alcohol generator from coal
- Publication number 20060213125
- Publication date Sep 28, 2006
- Sten Rutger Gerfast
- C10 - PETROLEUM, GAS OR COKE INDUSTRIES TECHNICAL GASES CONTAINING CARBON MON...
Information Patent Application
Control signals for single coil brushless motor
- Publication number 20060145638
- Publication date Jul 6, 2006
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Internal combustion engine without oil
- Publication number 20060060164
- Publication date Mar 23, 2006
- Sten Rutger Gerfast
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Internal combustion engine witouth oil
- Publication number 20060060165
- Publication date Mar 23, 2006
- Sten R. Gerfast
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Generator with output options and low loss windings
- Publication number 20050127771
- Publication date Jun 16, 2005
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Single coil, direct current permanent magnet brushless motor with v...
- Publication number 20050122074
- Publication date Jun 9, 2005
- McMillan Electric Company
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Abutting clinch-joining method
- Publication number 20050105964
- Publication date May 19, 2005
- Sten R. Gerfast
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Application
Magnetic coupling using magnets on a motor rotor
- Publication number 20050099077
- Publication date May 12, 2005
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
SINGLE COIL, DIRECT CURRENT PERMANENT MAGNET BRUSHLESS MOTOR WITH V...
- Publication number 20040251859
- Publication date Dec 16, 2004
- Sten R. Gerfast
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Fast acting, re-settable circuit breaker without moving parts
- Publication number 20030007302
- Publication date Jan 9, 2003
- Sten R. Gerfast
- H01 - BASIC ELECTRIC ELEMENTS

Sten R. Gerfast

Person

Patents Grantslast 30 patents

Selecting switching functions using screw-force, on modules having...

Brushless, ironless stator, single coil motor without laminations

Efficient circuit for brushless low cogging machine with congruent...

Generator with output options and low loss windings

Clip-type label

Two terminal variable resistor

In-expensive head and upper torso restraint with u-shaped air bag

Continuous hydrogen and alcohol generator from coal

Abutting clinch-joining method

Single coil, direct current permanent magnet brushless motor with v...

Single coil, direct current permanent magnet brushless motor with v...

Fast acting, re-settable circuit breaker without moving parts

Drive for handling multiple size information storage media cartridg...

Drive for handling multiple size information storage media cartridg...

Alignment and latching mechanism in a drive for magnetic data tape...

Tape cartridge including an indication device to distinguish betwee...

Drive for handling multiple size information storage media cartridg...

Belt-driven tape cartridge having an idler roller near each corner

Drive for handling multiple size information storage media cartridg...

Tape tension enhancement for belt driven tape cartridge corner rollers

Tape cartridge

Mechanically incompatible magnetic recording tape cartridges having...

Recording medium annealing process

Spheroidal machine

Cleaning apparatus for magnetic data tape cartridges

Power-reducing circuit for fluorescent and for high-intensity incan...

Transformerless current-limiting circuit

Stable stretched surface recording medium

Dynamoelectric machine having ironless stator coil

Stator or rotor based on permanent magnet segments

Patents Applicationslast 30 patents

Three pulse, odd-even motor winding system

Combination motor generator with odd-numbered stator and magnet

Linear series of open jaw coil winding slots

Continuous recharging of driverless electric vehicles without human...

Automatic charging when driving on a road having contacts

ANCHORING SYSTEM FOR PROSTHETICS

Automatic, dual power, inductive and conductive charger for electri...

Electric vehicle charger connections made by vehicle motion only

Unique magnetic effect and applications

RADIO-CONTROLLABLE AC-POWERED MOTORS WITH SEVERAL FUNCTIONS

Inexpensive safety alerting devices for munitions and a detector fo...

Brushless, ironless stator, single coil motor without laminations

Efficient circuit for brushless low cogging machine with congruent...

Continuous hydrogen and alcohol generator from coal

Inductive device actuated by body motion

Two terminal variable resistor

Clip-type label

Continuous hydrogen and alcohol generator from coal

Control signals for single coil brushless motor

Internal combustion engine without oil

Internal combustion engine witouth oil

Generator with output options and low loss windings

Single coil, direct current permanent magnet brushless motor with v...

Abutting clinch-joining method

Magnetic coupling using magnets on a motor rotor

SINGLE COIL, DIRECT CURRENT PERMANENT MAGNET BRUSHLESS MOTOR WITH V...

Fast acting, re-settable circuit breaker without moving parts