Plastic-made reinforced structure
US5618607A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1995 |
| Grant date | Apr 8, 1997 |
| Priority date | — |
| Expiry date | Apr 25, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2495
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A plastic-made reinforced structure comprising a thermoplastic resin-made plate and cylindrical hollow rib(s) made of the same resin as that of said plate, connected to at least one side of said plate perpendicularly to the side so that the plate and the rib(s) form one piece, in which structure the following relationships hold: PA1 d.sub.1 .gtoreq.20 mm, PA1 1>d.sub.1 /d.sub.2 .gtoreq.0.7, PA1 H.gtoreq.30 mm, PA1 1.gtoreq.d.sub.1 /H.gtoreq.0.3, and PA1 1>t.sub.1 /t.sub.2 >0.3 wherein d.sub.1 and d.sub.2 are the inside and outside diameters of each rib at the root of the rib, i.e. the joint of the rib to the plate; H is the length of each rib from the root to the front end; and t.sub.1 and t.sub.2 are the rib thicknesses at the front end and at the root.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.