David M Klein

7038333, May 2, 2006

Feb 15, 2002

10/077191

Jordan T. Bourilkov - Stamford CT, US
David N. Klein - Southbury CT, US
John Rotondo - Shelton CT, US

The Gillette Company - Boston MA

H02J 1/16

307 46, 307 45, 363142, 320162

A hybrid power supply includes a switching type DC/DC boost type converter that receives energy from a primary battery cell and is arranged to deliver the energy to a rechargeable cell, set to provide a fixed output voltage that is less than the full charge voltage of the rechargeable cell. The hybrid power supply includes a circuit including a primary battery current control that senses primary battery current, and controls in part operation of the converter to provide constant current discharge on the primary battery side of the hybrid power supply.

7482091, Jan 27, 2009

Jul 9, 2003

10/616495

Jordan T. Bourilkov - Stamford CT, US
Andrew G. Gilicinski - Westborough MA, US
David N. Klein - Southbury CT, US
John Rotondo - Shelton CT, US

The Gillette Company - Boston MA

H01M 2/26
H01M 8/04
H01M 10/00

429121, 429 23, 429122

A hybrid power supply includes a fuel cell and an interface between the fuel cell and a fuel cartridge or external battery and a switching type DC/DC boost type converter that receives energy from the fuel cell or external battery and is arranged to deliver the energy to a rechargeable cell. The hybrid power supply also includes a fuel cell current sensor/comparator, included in a feedback control loop disposed about the DC/DC converter, which controls in part operation of the converter to provide constant current discharge on the fuel battery side of the hybrid power supply. An adapter that couples a source of AC power such as a charger to the interconnect is also disclosed.

7646174, Jan 12, 2010

Feb 22, 2006

11/359270

Aaron W. Arbesman - Wethersfield CT, US
Jordan T. Bourilkov - Stamford CT, US
David N. Klein - Southbury CT, US
John Rotondo - Trumbull CT, US

The Gillette Company - Boston MA

H02J 7/00

320134

A electronic device includes an electrical component powered by a battery and a compartment to receive the battery. A low voltage cutoff circuit is configured to couple to the battery. The low voltage cutoff circuit includes a switching device having a control terminal, a current sourcing terminal and current sinking terminal and a resistor coupled between the control terminal and a first terminal of a battery. The circuit has first and second output terminals. The first output terminal is coupled to the first terminal of the battery and the second output terminal is coupled to the current sourcing terminal of the transistor. The first and second output terminals are configured to accept connections to positive and negative terminals of the electrical component.

7862926, Jan 4, 2011

Jan 23, 2009

12/358320

Jordan T. Bourilkov - Stamford CT, US
Andrew G. Gilicinski - Danville CA, US
David N. Klein - Southbury CT, US
John Rotondo - Trumbull CT, US

The Gillette Company - Boston MA

H01M 2/26
H01M 10/00
H01M 12/00

429121, 429122, 429 9, 320103

A hybrid power supply includes a fuel cell and an interface between the fuel cell and a fuel cartridge or external battery and a switching type DC/DC boost type converter that receives energy from the fuel cell or external battery and is arranged to deliver the energy to a rechargeable cell. The hybrid power supply also includes a fuel cell current sensor/comparator, included in a feedback control loop disposed about the DC/DC converter, which controls in part operation of the converter to provide constant current discharge on the fuel battery side of the hybrid power supply. An adapter that couples a source of AC power such as a charger to the interconnect is also disclosed.

7932634, Apr 26, 2011

Mar 5, 2003

10/382106

Jordan T. Bourilkov - Stamford CT, US
David N. Klein - Southbury CT, US
John Rotondo - Shelton CT, US
Andrew G. Gilicinski - Westborough MA, US

The Gillette Company - Boston MA

H02J 1/00

307 46

A hybrid power supply includes a switching type DC/DC boost type converter that receives energy from a fuel cell and is arranged to deliver the energy to a rechargeable cell, set to provide a fixed output voltage that is less than the full charge voltage of the rechargeable cell. The hybrid power supply includes a circuit including a fuel cell current control that senses fuel cell current, and controls in part operation of the converter to provide constant current discharge on the fuel cell side of the hybrid power supply.

8018204, Sep 13, 2011

Sep 6, 2007

11/851013

Jordan T. Bourilkov - Stamford CT, US
David N. Klein - Southbury CT, US

The Gillette Company - Boston MA

H02J 7/00
H02J 7/04
H02J 7/16

320137, 320132, 320152, 320157, 320162

Disclosed is a charger device. The charger device includes a housing, defining a volume, that includes a power conversion module to provide output power of between 3-300 W, and a controller configured to determine a current level to direct to one or more rechargeable batteries, and cause the output power to be directed to the one or more rechargeable batteries at a charging current substantially equal to the determined current level. A ratio of the output power directed to the one or more rechargeable batteries and the volume is equal to at least 10 W/in.

8373387, Feb 12, 2013

Aug 3, 2010

12/849777

Jordan T. Bourilkov - Stamford CT, US
David T. Biedermann - Easton CT, US
David N. Klein - Southbury CT, US

The Gillette Company - Boston MA

H02J 7/00

320108, 320107

An inductive charger adapter element includes a housing, a coil comprising electrically conductive material, the coil contained within the housing, the coil configured to inductively couple to an external primary coil; and a connector supported on the housing, the connector coupled to the coil and configured to couple the inductive charger adapter element to a port provided on a device, the connector including a first pair of conductors for providing power and charging current to a battery in the device.

8378632, Feb 19, 2013

Oct 2, 2007

11/865932

Jordan T. Bourilkov - Stamford CT, US
David N. Klein - Southbury CT, US

The Gillette Company - Boston MA

H02J 7/00
H02J 1/00

320117, 320118, 320124, 320127, 320128, 307 71, 307 36, 307 41

Disclosed is a circuit arrangement. The circuit arrangement includes a plurality of rechargeable batteries each having at least one rechargeable electrochemical cell, and current-carrying members connecting the plurality of batteries such that when the plurality of batteries are charging the plurality of batteries are in a series electrical circuit arrangement and when the plurality of batteries are discharging the plurality of batteries are in a parallel electrical circuit arrangement.