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:
Nov. 12, 2002
Filed:
Sep. 19, 2000
Applicant:
Inventors:
Thomas Philip Harman, Ellicott City, MD (US);
Paul Andrew Fuchs, Jr., Leesburg, VA (US);
Thomas Emil Brovold, Edina, MN (US);
Assignee:
The United States of America as represented by the Secretary of Transportation, Washington, DC (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01B 5/24 ; G01N 3/08 ;
U.S. Cl.
CPC ...
G01B 5/24 ; G01N 3/08 ;
Abstract
An angle measuring device for use in a gyratory compactor. The device is a self-contained unit which is placed in the bottom of the mold and the asphalt or other material being compacted is placed on top of it. Inside the device is a carrier which has two vertically aligned probes which project out from it and touch the walls of the mold. One probe is fixed to the carrier; the other can move independently of the carrier. The difference in extension between the two probes is related to the angle of compaction.