Daniel J Wood

US Patent:

7640278, Dec 29, 2009

Filed:

Jun 28, 2006

Appl. No.:

11/427203

Inventors:

Scott David Lashley - Portland OR, US
John Frederic Miller - Lake Oswego OR, US
Clarence Madison Pruet - Flower Mound TX, US
Daniel Alan Wood - Fremont CA, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 12/00

US Classification:

707203, 707101

Abstract:

A partial-blocking consistency point system identifies transaction updates with a consistency point ID associated with a consistency point sequence number, records consistency point data that identify a location of the partial-blocking consistency point, flushes to a non-volatile storage the transaction updates identified with the consistency point sequence number without blocking transaction activity, and hardens to the non-volatile storage the recorded partial-blocking consistency point so that data associated with the recorded partial-blocking consistency point can be recovered. The consistency point sequence number is incremented each time the partial-blocking consistency point is recorded to uniquely identify the partial-blocking consistency point and transaction updates associated with the partial-blocking consistency point. The transaction updates identified with the consistency point sequence number are processed to improve efficiency of the flushing of the transaction updates.

US Patent:

20210008439, Jan 14, 2021

Filed:

Sep 28, 2020

Appl. No.:

17/035181

Inventors:

- Santa Cruz CA, US
Beau ROBERTSON - Santa Cruz CA, US
Daniel J. WOOD - Camas WA, US
Julian DE LA RUA - Santa Cruz CA, US

Assignee:

Future Motion, Inc. - Santa Cruz CA

International Classification:

A63C 17/12
A63C 17/01
A63C 17/08
G01C 19/42
G05D 1/08

Abstract:

A self-stabilizing, one-wheeled electric skateboard may include improved features. In some examples, the vehicle includes a status indicator viewable through a slot formed in an upper surface of the board. In some examples, the vehicle includes a convertible carrying handle transitionable between stowed and deployed positions. In some examples, the vehicle includes an interchangeable fender and fender substitute that may be removably coupled to an upper surface of the board. In some examples, a motor controller of the vehicle may operate a field-oriented control (FOC) scheme configured to control the electric motor by manipulating a direct current aligned with a rotating rotor flux angle and a quadrature current defined at ninety degrees from the rotating rotor flux angle. In some examples, the motor controller may be configured to permit intuitive dismounting of the vehicle by tilting and/or moving the vehicle backward.

US Patent:

20200254327, Aug 13, 2020

Filed:

Oct 28, 2019

Appl. No.:

16/664977

Inventors:

- Santa Cruz CA, US
Beau ROBERTSON - Santa Cruz CA, US
Daniel J. WOOD - Camas WA, US
Julian DE LA RUA - Santa Cruz CA, US

Assignee:

Future Motion, Inc. - Santa Cruz CA

International Classification:

A63C 17/12
G05D 1/08
G01C 19/42
A63C 17/08
A63C 17/01

Abstract:

A self-stabilizing, one-wheeled electric skateboard may include improved features. In some examples, the vehicle includes a status indicator viewable through a slot formed in an upper surface of the board. In some examples, the vehicle includes a convertible carrying handle transitionable between stowed and deployed positions. In some examples, the vehicle includes an interchangeable fender and fender substitute that may be removably coupled to an upper surface of the board. In some examples, a motor controller of the vehicle may operate a field-oriented control (FOC) scheme configured to control the electric motor by manipulating a direct current aligned with a rotating rotor flux angle and a quadrature current defined at ninety degrees from the rotating rotor flux angle. In some examples, the motor controller may be configured to permit intuitive dismounting of the vehicle by tilting and/or moving the vehicle backward.

US Patent:

20190381893, Dec 19, 2019

Filed:

Aug 29, 2019

Appl. No.:

16/555224

Inventors:

- Santa Cruz CA, US
Daniel J. WOOD - Camas WA, US

Assignee:

Future Motion, Inc. - Santa Cruz CA

International Classification:

B60L 15/20
B62K 11/00
B60L 50/50

Abstract:

A control system for a tiltable vehicle may include a motor controller configured to respond to backward or reverse operation of the vehicle by hindering a responsiveness of the control system (e.g., proportionally) and/or eventually disengaging a drive motor of the vehicle. Accordingly, a user may intuitively and safely dismount the vehicle by selectively commanding reverse operation. In some examples, the backward direction may be user-defined.

US Patent:

20190329123, Oct 31, 2019

Filed:

Jul 8, 2019

Appl. No.:

16/504641

Inventors:

Daniel James WOOD - Camas WA, US

International Classification:

A63C 17/12
G01L 5/22
B60L 7/10
A63C 17/01
B60L 15/20
B60L 50/20
A63C 17/00
A63C 17/22
B60L 50/50

Abstract:

An electric weight sensing skateboard using one or more strain gauge systems to detect rider-induced strain on one or both trucks, an inertial sensor to detect accelerations and balance position, and wheel speed sensors. Throttle is controlled by rider position, for example, lean forward to increase speed, lean back to slow down. Several drive methods include a driver position detection velocity setpoint control, torque setpoint control, and direct velocity/torque control. A throttle remote is note required. Rider weight activates the motors.

US Patent:

20190269998, Sep 5, 2019

Filed:

May 20, 2019

Appl. No.:

16/417283

Inventors:

- Santa Cruz CA, US
Daniel J. WOOD - Camas WA, US
Julian DE LA RUA - Santa Cruz CA, US

Assignee:

Future Motion, Inc. - Santa Cruz CA

International Classification:

A63C 17/12
A63C 17/22
A63C 17/26
B60K 7/00
A63C 17/01

Abstract:

When an electric vehicle is traveling downhill, experiencing regenerative braking, or otherwise forcing the vehicle motor to turn faster than the commanded motor torque, the vehicle motor produces electrical energy that can be used to recharge a vehicle battery. However, if the vehicle battery is already nearly or fully charged, the excess electrical energy produced may damage the battery. Control systems described herein may reduce and/or dispose of the excess energy by manipulating the motor flux (i.e., direct) current and quadrature current independently.

US Patent:

20190176646, Jun 13, 2019

Filed:

Dec 7, 2018

Appl. No.:

16/213949

Inventors:

- Santa Cruz CA, US
Daniel J. WOOD - Camas WA, US

Assignee:

Future Motion, Inc. - Santa Cruz CA

International Classification:

B60L 15/20
B62K 11/00

Abstract:

A control system for a tiltable vehicle may include a motor controller configured to respond to backward or reverse operation of the vehicle by hindering a responsiveness of the control system (e.g., proportionally) and/or eventually disengaging a drive motor of the vehicle. Accordingly, a user may intuitively and safely dismount the vehicle by selectively commanding reverse operation. In some examples, the backward direction may be user-defined.

US Patent:

20190168104, Jun 6, 2019

Filed:

Dec 3, 2018

Appl. No.:

16/208485

Inventors:

- Santa Cruz CA, US
Daniel J. WOOD - Camas WA, US
Julian DE LA RUA - Santa Cruz CA, US

Assignee:

Future Motion, Inc. - Santa Cruz CA

International Classification:

A63C 17/12
A63C 17/01
A63C 17/22
A63C 17/26
B60K 7/00

Abstract:

When an electric vehicle is traveling downhill, experiencing regenerative braking, or otherwise forcing the vehicle motor to turn faster than the commanded motor torque, the vehicle motor produces electrical energy that can be used to recharge a vehicle battery. However, if the vehicle battery is already nearly or fully charged, the excess electrical energy produced may damage the battery. Control systems described herein may reduce and/or dispose of the excess energy by manipulating the motor flux (i.e., direct) current and quadrature current independently.