Structure of seat back with armrest and method for forming the same
US6073996A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 1997 |
| Grant date | Jun 13, 2000 |
| Priority date | — |
| Expiry date | Dec 31, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1031
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
Forming a structure of seat back with armrest is effected by pressingly adhering a covering material to a foam padding of a predetermined sheet back shape, through a foaming process and an adhering-type stamping process, using a die element having a protuberant die surface part in both of the foaming and adhering-type stamping processes. The protuberant die surface part includes at least two sloped die surfaces. Hence, in operation, the die element can be smoothly removed from a resulting foam padding in which a recessed portion with at least two sloped walls is formed, at the foaming process. Then, the covering material is bonded evenly in such recessed portion and other surrounding area of padding at the adhering-type stamping process. In this way, a resulting structure of seat back is attained, with a recessed armrest storage portion having at least two sloped walls defined therein, which has no floated or wrinkled point therein and allows the armrest to be frictionally retained in the armrest storage portion when in no use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.