The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 2022
Filed:
Mar. 15, 2019
Applicant:
Ctl Group, Skokie, IL (US);
Inventor:
Terry J. Willems, Kenosha, WI (US);
Assignee:
CONSTRUCTION TECHNOLOGY LABORATORIES, INC., Skokie, IL (US);
Primary Examiner:
Int. Cl.
CPC ...
G01N 3/46 (2006.01); G01N 33/38 (2006.01);
U.S. Cl.
CPC ...
G01N 3/46 (2013.01); G01N 33/383 (2013.01); G01N 2203/0033 (2013.01);
Abstract
An apparatus and method for testing relative hardness of horizontal concrete surfaces includes a weighted platform with scratching pins on a bottom surface of the platform. The pins are arranged in a trapezoidal arrangement. The apparatus is translated over the surface to determine if the surface has reached the desired level of hardness. If translation of the apparatus results in scratching of the surface, the desired level of hardness has not been reached.