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:
Mar. 14, 2017
Filed:
Apr. 28, 2016
Progressive Safety Solutions, Llc, Brookfield, OH (US);
David M. DeChristofaro, Niles, OH (US);
David H. Wilkerson, Niles, OH (US);
Progressive Safety Solutions, LLC, Brookfield, OH (US);
Abstract
A tread for a steel-pan staircase. The tread includes a lattice structure comprising a top side, a left side, and a right side. The tread further includes a top surface integrally formed on the top side of the lattice structure, a first tongue-and-groove structure disposed on the left side of the lattice structure, and a second tongue-and-groove structure disposed on the right side of the lattice structure. The lattice structure comprises a plurality of lateral members and a plurality of crosswise members. The first tongue-in-groove structure may include a wall descending from the top surface. The second tongue-in-groove structure may include a first wall extending outwardly from the right side of the lattice structure. Extending upwardly from the first wall may be a second wall or a plurality of teeth. The placement of the first and second tongue-in-groove structures may be reversed.