Charles J 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:

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

US Patent:

20220303439, Sep 22, 2022

Filed:

Nov 2, 2021

Appl. No.:

17/453268

Inventors:

Christopher Jordan Kraemer - Dallas TX, US
Charles McClelland Marshall - Dallas TX, US
Charles Thomas Marshall - Atherton CA, US

International Classification:

H04N 5/225
G02B 5/20
G06F 1/16
G02B 27/09
G02B 13/00
G02B 7/02

Abstract:

A removably attachable optical device includes a clamp comprising an upper clamp member and a lower clamp member. When the clamp is mounted on a mobile device, the upper member extends over a device side to enable an orifice formed by the upper clamp member to be positioned over an aperture of the mobile device. An optical element housing has a portion configured to engage the an upper clamp member. A non-uniform optical element is rotatably mounted to the optical element housing. Rotation of the non-uniform optical element causes light passing through the non-uniform optical element as the non-uniform optical element is rotated to be correspondingly altered to create optical effects.

US Patent:

20200351424, Nov 5, 2020

Filed:

Jul 15, 2020

Appl. No.:

16/929687

Inventors:

Christopher Jordan Kraemer - Dallas TX, US
Charles McClelland Marshall - Dallas TX, US
Charles Thomas Marshall - Atherton CA, US

International Classification:

H04N 5/225
G02B 5/20
G06F 1/16
G02B 27/09
G02B 13/00
G02B 7/02

Abstract:

A removably attachable optical device includes a clamp comprising an upper clamp member and a lower clamp member. When the clamp is mounted on a mobile device, the upper member extends over a device side to enable an orifice formed by the upper clamp member to be positioned over an aperture of the mobile device. An optical element housing has a portion configured to engage the an upper clamp member. A non-uniform optical element is rotatably mounted to the optical element housing. Rotation of the non-uniform optical element causes light passing through the non-uniform optical element as the non-uniform optical element is rotated to be correspondingly altered to create optical effects.

US Patent:

20190253589, Aug 15, 2019

Filed:

Feb 12, 2019

Appl. No.:

16/273984

Inventors:

Christopher Jordan Kraemer - Dallas TX, US
Charles McClelland Marshall - Dallas TX, US
Charles Thomas Marshall - Atherton CA, US

International Classification:

H04N 5/225
G02B 5/20
G02B 7/02
G02B 27/09
G02B 13/00
G06F 1/16

Abstract:

A removably attachable optical device includes a clamp comprising an upper clamp member and a lower clamp member. When the clamp is mounted on a mobile device, the upper member extends over a device side to enable an orifice formed by the upper clamp member to be positioned over an aperture of the mobile device. An optical element housing has a portion configured to engage the an upper clamp member. A non-uniform optical element is rotatably mounted to the optical element housing. Rotation of the non-uniform optical element causes light passing through the non-uniform optical element as the non-uniform optical element is rotated to be correspondingly altered to create optical effects.

Author:

Charles W. Marshall

ISBN #:

0397530609

Author:

Charles Burton Marshall

ISBN #:

0819168157

Author:

Charles Burton Marshall

ISBN #:

0844713155

Author:

Charles Marshall

ISBN #:

0803282621

Author:

Charles R. Marshall

ISBN #:

0867209100

Author:

Charles J. Marshall

ISBN #:

0854096493

Author:

Charles F. Marshall

ISBN #:

0807122823

Author:

Charles F. Marshall

ISBN #:

0807126365