Timothy James Lawson
Engineers at Westbrook, Farmington, MI
License number
Colorado 22652
Issued Date
Jul 13, 1984
Renew Date
Dec 14, 1990
Expiration Date
Dec 14, 1990
Type
Professional Engineer
Address
Address
28446 Westbrook Ct, Farmington, MI 48018
Professional information
Multi-Axial Fatigue Testing Machine
US Patent:
4802365, Feb 7, 1989
Filed:
Feb 22, 1988
Appl. No.:
7/158605
Inventors:
David W. Sallberg - Farmington Hills MI
Timothy J. Lawson - Farmington Hills MI
Maurice H. Cardon - Rochester MI
Timothy J. Lawson - Farmington Hills MI
Maurice H. Cardon - Rochester MI
Assignee:
Schenck Pegasus Corporation - Troy MI
International Classification:
G01N 332
US Classification:
73808
Abstract:
A machine for testing ball joints, elastomer bushings or other parts has a pair of mutually rotated gimbals attached to the outer shell or element for applying rotational displacements about two axes and a linear input attached to the inner element to apply a force along another axis. Each axis input is effected by a linear actuator and the gimbal inputs are specially designed to assure accurate independent control without parasitic motion between the inputs. Force and displacement transducers monitor each axis to provide feedback signals to control circuits. A heat chamber including the gimbal assembly has hot air applied from an external source through a hollow gimbal hub to hold the test specimen at a desired temperature.