Richard M Stacy

US Patent:

20200103322, Apr 2, 2020

Filed:

Oct 1, 2018

Appl. No.:

16/148540

Inventors:

- Raleigh NC, US
Ethan Steckmann - Durham NC, US
Andrew LaCroix - Raleigh NC, US
Richard Stacy - Fayetteville NC, US
Lawrence James - Raleigh NC, US
Dirk Steckmann - Raleigh NC, US

International Classification:

G01N 3/08
G01N 3/06

Abstract:

A system for evaluating properties of an asphalt sample includes a load frame and a test fixture. The load frame includes a platform and a loading rod. The test fixture includes: a base configured to rest on the platform of the load frame; first and second spaced apart vertical guide bars extending upwardly from the base; a horizontal cross bar above the base and extending between the first and second guide bars, wherein the asphalt sample is configured to be held between the base and the cross bar; a load plate above the cross bar, the load plate configured to receive the loading rod of the load frame to apply a load to the asphalt sample; a load cell above the base and configured to measure the applied load and to generate corresponding load electrical signals; and a controller configured to receive the load electrical signals.

US Patent:

20190025168, Jan 24, 2019

Filed:

Jul 18, 2018

Appl. No.:

16/038350

Inventors:

- Raleigh NC, US
Ali Regimand - Raleigh NC, US
Ethan Steckmann - Durham NC, US
Richard Stacy - Fayetteville NC, US
Dirk Steckmann - Raleigh NC, US
Andrew LaCroix - Raleigh NC, US
Adam O'Neill - Durham NC, US

International Classification:

G01N 3/02
G01N 3/56
G01N 33/42

Abstract:

A load and motion measurement system for use with a Hamburg Wheel Tracker device includes: a housing; at least one load cell held in or by the housing; a load platform held in or by the housing and resting on the at least one load cell; and a controller operatively associated with the at least one load cell. The load and motion measurement system is configured to be received in a sample tray that is held in the Hamburg Wheel Tracker device. The controller is configured to determine operational parameters associated with a wheel of the Hamburg Wheel Tracking device that rolls along the load platform. Vertical displacement measurement calibration and verification systems for use with a Hamburg Wheel Tracker device are also described, as are associated kits and methods.