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:
Dec. 29, 1987
Filed:
Jun. 13, 1986
Donald W Schmanski, Carson City, NV (US);
Other;
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 comprises a flat plate having a chamfered edge and including raised bumps coupled to a top surface of the plate and projecting upward therefrom to a maximum height of less than 8 millimeters. A flowable adhesive used at the chamfered edge provides for a tapered seal around the tile or for formation of an expansion joint between two contiguous tiles. The bumps are configured as truncated structure having a larger base and tapered to a top surface which bears the foot traffic. A bottom surface of the tile includes a uniform adhesive layer which enables attachment of the tile to a street surface. A system of tiles for assisting visually handicapped persons across the street is also disclosed and includes a combination of dot and bar tiles oriented to give direction to the pedestrian. An accompanying guide strip is attached at the street surface adjacent the dot and bar tiles and detected with the swing of a cane to lead along the preferred pedestrian course.