Object intended to be held in the hand, in particular a suitcase handle, and a process for manufacturing same
US4340990A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 18, 1979 |
| Grant date | Jul 27, 1982 |
| Priority date | — |
| Expiry date | Dec 18, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S264/83
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention proposes a process for manufacturing an object intended to be held in the hand and which comprises a body made from a plastic material reinforced inside by means of a frame and comprising at least one grasping zone having a hardness less than that of its other parts. This process consists in placing the frame in a mould comprising an injection aperture in the part of its cavity corresponding to the grasping zone of the object, closing the mould, injecting into the cavity a definite amount of a compact plastic material, this amount being insufficient to completely fill the mould, then injecting an amount of expanded plastic material to completely fill the cavity, the expanded plastic material, which while penetrating inside the volume of the non-solidified compact material, forces this latter to come into contact with the whole internal surface of the cavity of the mould and to cover the frame, and removing the object from the mould after cooling of the two plastic materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.