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:
Apr. 12, 1994
Filed:
Jan. 14, 1991
Applicant:
Inventor:
Donald W Schmanski, Carson City, NV (US);
Assignee:
Guidance Systems, Inc., Carson City, NV (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E01C / ; E01C / ; E01F / ;
U.S. Cl.
CPC ...
404 42 ; 404 15 ; 404 32 ;
Abstract
A tile for positioning on walkways, crosswalks and other areas of pedestrian traffic for providing direction and warning to visually handicapped persons. The tile includes a flat plate having top and bottom surfaces and an array of raised bumps coupled and formed integrally with the top surface of the plate and projecting upward therefrom in a tactile pattern for providing tactile information. The combination of plate and raised bumps is comprised of fiber reinforced, thermosetting resin to form a rigid tile of integral construction.