Method of molding a sewing machine frame of fiber reinforced composition
US4493808A · kind A · utility
4Cited by
2References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 1982 |
| Grant date | Jan 15, 1985 |
| Priority date | — |
| Expiry date | Jun 4, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C45/2708
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A sewing machine bed having main and open channel sections is molded of glass reinforced thermosetting plastic composition which is injected into the mold through a side gate located opposite the juncture of the main and channel sections providing advantageous fiber orientation resulting in dimensional stability and freedom from warpage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.