US 4,471,012 · Granted 1984-09-11
The Reverse Bevel That Made Laminate Flooring Look Seamless
This patent describes a clever trick for making laminate wood flooring fit together more tightly and smoothly. Instead of cutting the edges straight up and down, the edges are tilted inward at a shallow angle, so when planks snap together, their tops sit perfectly flush without visible gaps or steps.
The plain-English version
What it protects
The claim covers a specific design for laminated wood flooring planks where the adjacent edges of neighboring planks are beveled at an angle between 2 and 7 degrees from vertical (leaning slightly inward). What's protected is the combination of this reverse-bevel geometry with the overall plank structure, ensuring that when planks are fitted together, their upper surfaces meet at the same height with minimal or no visible seams.
Why it matters
Laminate and engineered wood flooring is a major category in home improvement, and the visual quality of the finished floor matters enormously to consumers. This patent addressed a real problem: standard straight-edged planks would create visible steps or gaps between pieces, especially as wood naturally expands and contracts. The reverse-bevel solution, filed by Masonite Corporation in 1982, offered a way to make budget-friendly laminate flooring look nearly as seamless as solid hardwood, which helped drive the category's adoption in residential markets.
Real-world use
When you run your hand across a modern laminate floor in a kitchen or bedroom, you're likely feeling the benefit of this geometry—the subtle angle that keeps adjacent planks locked together and their surfaces flush rather than creating a ridge you'd catch your shoe on.
Original USPTO abstract
Laminated wood strip or plank flooring members are disclosed having adjacent edges of adjacent strip or plank members slightly reverse-beveled, i.e. 2° to 7° from vertical, to tightly fit together to provide precise, flush contact between adjacent upper surfaces of adjacent strips or planks. The strip or plank wood materials are provided in various lengths and various predetermined widths so that the random width and length strip or plank materials can be fitted together to provide a most unexpected and pleasing appearance wherein each adjacent strip or plank member is precisely fitted together and adjacent surface portions are substantially flush, or in contact.
Patent details
- Publication number
- US 4,471,012
- Filing date
- 1982-05-19
- Grant date
- 1984-09-11
- Assignee
- Masonite Corporation
- Inventor(s)
- MAXWELL; THOMAS V.
- CPC class
- B32B21/13
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