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:
Aug. 08, 1989
Filed:
Jun. 04, 1987
Applicant:
Inventors:
Robert M Flanagan, Lincolnshire, IL (US);
Sidney A Heenan, Park Ridge, IL (US);
Assignee:
Amerace Corporation, Parsippany, NJ (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01F / ;
U.S. Cl.
CPC ...
404 11 ; 404 15 ;
Abstract
A depressible roadway marker has an outer metal housing within which an elastomeric core is held. The core holds a retroreflective lens element above the level of the roadway which depresses into the metal housing when run over by a vehicle tire. The core includes a wiping element to scrub the lens element each time the core is depressed. The core includes structure to absorb the forces encountered during depression to reduce fatigue damage to the core.