Method for cutting complexly shaped foamed plastic bodies from a workpiece and foam body products
US5573350A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 13, 1994 |
| Grant date | Nov 12, 1996 |
| Priority date | — |
| Expiry date | Jul 13, 2014 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE03F3/046
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A method for cutting first and second complementary foamed plastic bodies of a predetermined shape from a single workpiece includes the step of moving a linear cutting element through the workpiece. The linear cutting element, such as a heated wire, is moved through the workpiece to form a first surface which forms a portion of the predetermined shape of the first and second foamed plastic bodies. The workpiece is thereafter shifted in position relative to the linear cutting element and the linear cutting element is again moved through the shifted workpiece to form a second surface. Due to the shifting of the workpiece, the first surface is sloped relative to the second surface. The first and second foamed plastic bodies are preferably first and second trench forms defining the shapes of different sections of a trench drain which has a continuously sloped bottom surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.