Method of molding socket of plastic resin tube
US4177237A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 24, 1977 |
| Grant date | Dec 4, 1979 |
| Priority date | — |
| Expiry date | Aug 24, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S425/218
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A socket is molded at the edge of a plastic resin tube with a male mold and a female mold wherein the male mold comprises a large diameter part, a tapered part and a small diameter part and the female mold comprises a barrel for surrounding the male mold small diameter part with a gap larger than the thickness of the resin tube and a split stopper for closing the opening of the annular space formed between the male mold small diameter part and barrel. In the operation, the edge of the resin tube is heated to soften it and it is outwardly fitted on the male mold small diameter part and the stopper is contacted at the boundary part between the male mold small diameter part and the tapered part, or on the small diameter part near the boundary, and the barrel is connected to the split stopper to dispose it about the outer part of the male mold small diameter part, and the resin tube is pushed to the direction of the male mold large diameter part to fill the edge of the resin tube in the annular space formed by the male mold small diameter part and the barrel and the stopper so as to increase the thickness, and the barrel connected with the split stopper which is radially opened and the…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.