Elevated floor plate
CA 1296155 C · Owner: Tate Access Floors, Inc. · Inventors: Leffel, Howard R. Jr.; Hardwicke, Carl S.; Spatoulas, George S.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The disclosure concerns a square die-cast elevated floor plate (40,50) having a top continuous or perforated panel reinforced underneath by a polygonal tessellation grid of ribs (45 46, 56). All of the ribs of the grid, including their integral ejector pin bosses (47, 48, 49, 55) and border flange (42) are of the same, depth; however, concentric rows (RI RII, RIII, RIV) of polygons, in the tessellation pattern have their ribs gradually increasing in thickness from the border flange to the center of the plate. The polygons in the pattern may comprise squares and octagons in which alternate sides of the octagons have a ratio of one to the square-root-of-two, and the sides of the squares …
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.