Charles H Marshall

US Patent:

6396041, May 28, 2002

Filed:

Nov 3, 1999

Appl. No.:

09/433122

Inventors:

Curtis A. Vock - Boulder CO 80304
Kevin J. Grealish - Westwood MA 02090-2948
Robert D. Frey - Bolton MA 01740
George Nauck - Plant City FL 33566
Charles M. Marshall - North Andover MA 01845

International Classification:

A63B 6936

US Classification:

2502062, 2502081, 473152, 473218, 473270

Abstract:

The invention provides a golf feedback system. A mat is used to determine player foot position, and a 3D golf tracking system tracks golf balls hit from the mat to determine (a) a ground ball track and (b) a player orientation axis, based on the foot position and relative to the mat. The system further determines information indicative of how well the ground ball track correlated to the orientation axis. Preferably, a golfer using the system is led through a plurality of pin target locations in a simulated golf game. The system evaluates and stores information such as slice and hook, accuracy, player orientation axis and ball carry distance such that the player can evaluate his/her game individually or against one or more other players. The invention can include a plurality of mats, each mat located at a different tee off position at one or more driving ranges, each mat providing player foot position at that mat, a 3D golf tracking system at each of the driving ranges for tracking golf balls hit from one ore more mats at the associated driving, and a web server for storing and collating player performance information (e. g. , player orientation axis, slice, hook, distance information) for all golfers.

US Patent:

6774349, Aug 10, 2004

Filed:

Feb 19, 2002

Appl. No.:

10/078782

Inventors:

Curtis A. Vock - Boulder CO 80304
Kevin J. Grealish - Westwood MA 02090-2948
Robert D. Frey - Bolton MA 01740
George Nauck - Plant City FL 33566
Charles M. Marshall - North Andover MA 01845

International Classification:

G01C 2102

US Classification:

2502061, 2733172, 463 2, 473169

Abstract:

The invention provides a golf feedback system. A mat is used to determine player foot position, and a 3D golf tracking system tracks golf balls hit from the mat to determine (a) a ground ball track and (b) a player orientation axis, based on the foot position and relative to the mat. The system further determines information indicative of how well the ground ball track correlated to the orientation axis. Preferably, a golfer using the system is led through a plurality of pin target locations in a simulated golf game. The system evaluates and stores information such as slice and hook, accuracy, player orientation axis and ball carry distance such that the player can evaluate his/her game individually or against one or more other players. The invention can include a plurality of mats, each mat located at a different tee off position at one or more driving ranges, each mat providing player foot position at that mat, a 3D golf tracking system at each of the driving ranges for tracking golf balls hit from one ore more mats at the associated driving, and a web server for storing and collating player performance information (e. g. , player orientation axis, slice, hook, distance information) for all golfers.

US Patent:

6885971, Apr 26, 2005

Filed:

Nov 6, 2001

Appl. No.:

09/992966

Inventors:

Curtis A. Vock - Niwot CO, US
Dennis Darcy - Dracut MA, US
Andrew Bodkin - Wellesley MA, US
Charles Marshall - North Andover MA, US
Peter Flentov - Carlisle MA, US

Assignee:

PhatRat Technology, Inc. - Boulder CO

International Classification:

G06F017/00

US Classification:

702182, 702187

Abstract:

The invention detects the loft time, speed, power and/or drop distance of a vehicle, such as a sporting vehicle, during activities of moving and jumping. A loft sensor detects when the vehicle leaves the ground and when the vehicle returns to the ground. A controller subsystem converts the sensed information to determine a loft time. A display shows the recorded loft time to a user of the system. In addition, a speed sensor can detect the vehicle's speed for selective display to the user. A power sensing section informs the user of expended energy, which can be compared to other users. A drop distance sensing unit informs the user of the peak height of a jump, during an airtime. Gaming on the internet is facilitated to connect worldwide sport enthusiasts.

US Patent:

7072789, Jul 4, 2006

Filed:

May 11, 2004

Appl. No.:

10/842947

Inventors:

Curtis A. Vock - Boulder CO, US
Peter Flentov - Carlisle MA, US
Dennis Darcy - Dracut MA, US
Andrew Bodkin - Wellesley MA, US
Charles Marshall - North Andover MA, US

Assignee:

PhatRat Technology, Inc. - Niwot CO

International Classification:

G01B 21/00
G06F 17/00

US Classification:

702141, 482 8

Abstract:

Sensors detects loft time, speed, power and/or drop distance of a vehicle and/or person. The sensors couple with multiple persons during athletic activity. Data from the sensors downloads to a database so that users may compare athletic performances (e. g. , speed) between the persons, such as through the Internet.

US Patent:

D654973, Feb 28, 2012

Filed:

Jul 1, 2011

Appl. No.:

29/396626

Inventors:

Charles Marshall - Aurora CO, US

International Classification:

2102

US Classification:

D21756