Search

Christopher D Griffen

from Whitmore Lake, MI
Age ~66

Christopher Griffen Phones & Addresses

  • Whitmore Lake, MI
  • 10826 Sparkling Waters Ct, South Lyon, MI 48178
  • Dearborn, MI
  • Fenton, MI
  • Madison Heights, MI
  • Howell, MI
  • Canton, MI
  • Chesterfield, MI
  • Grand Blanc, MI
  • Farmington Hills, MI

Publications

Us Patents

Surface Measurement System With A Laser Light Generator

View page
US Patent:
6100984, Aug 8, 2000
Filed:
Jun 11, 1999
Appl. No.:
9/330916
Inventors:
Fang Chen - Rochester Hills MI
Mumin Song - Ann Arbor MI
Patrick J. Harwood - Farmington Hills MI
Christopher Thomas Griffen - Trenton MI
International Classification:
G01B 1124
US Classification:
356376
Abstract:
A measurement system (10) for accurately measuring the surface geometry of a part in three dimensions includes a laser (22) for emitting a laser beam (20). An objective lens (18) receives the laser beam (20) and expands the received laser beam (20) into a diverged beam. A liquid crystal system (16) is disposed in front of the objective lens (18) with respect to the laser (22) for receiving the diverged beam. The liquid crystal system (16) receives the diverged beam and generates at least one fringe pattern (24) on a surface of a three dimensional part which is to be measured. A computer (12) is in communication with the liquid crystal system (16) to control the pitch and phase of the fringe pattern (24).

Apparatus And Method For Measuring Contact Force Distribution Of A Tire

View page
US Patent:
5616839, Apr 1, 1997
Filed:
Jan 29, 1996
Appl. No.:
8/593762
Inventors:
Fang Chen - Rochester Hills MI
Christopher T. Griffen - Dearborn MI
Assignee:
Ford Motor Company - Dearborn MI
International Classification:
G01M 1702
US Classification:
73146
Abstract:
An apparatus and method for measuring full-field contact force distribution of a tire. A transparent, elastically deformable contact member having an elasticity substantially less than the elasticity of the tire is supported by a transparent rigid support member. As the tire is pressed into the contact member, the contact member deforms. Laser light illuminates the tire-contact member interface and is reflected to an imaging device which measures the displacement of the tire-contact member interface using interferometry principles. Because the elasticity of the contact member is known, the contact force distribution of the tire may be calculated. The apparatus and method may also be used to measure three-dimensional as well as dynamic contact force displacement.
Christopher D Griffen from Whitmore Lake, MI, age ~66 Get Report