Manufacturing method of resin damper having foamed resin seal material
US5690881A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | May 13, 1994 |
| Grant date | Nov 25, 1997 |
| Priority date | — |
| Expiry date | May 13, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB60H2001/007
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a manufacturing method for a damper which is effective when used for a car air conditioner as a air flow switching door. A resin damper body to which surfaces foaming resin seal materials are joined is formed by setting the foaming resin seal materials within mold spaces beforehand and then injecting the resin thereinto, and during which process the damper body and the seal materials are joined together. Particularly, the structure of the metal molds, the structure of an injection nozzle, and the shape of the seal materials are improved in order to improve the shape of the seal materials and the shape of the damper body during the injection molding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.