Molding valve stems to rubber article
US4010052A · kind A · utility
40Cited by
5References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 24, 1974 |
| Grant date | Mar 1, 1977 |
| Priority date | — |
| Expiry date | Sep 24, 1994 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29K2021/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A method of bonding a valve stem assembly adapted to a rubber sheet which includes the steps of inserting the stem in a concave mold, surrounding one end of the stem with an uncured rubber ring, inserting a removable plug in the core of the stem, placing an imperforate rubber sheet over the plugged end of the stem, and applying heat and pressure to the assembly so as to mold the ring and sheet around the end of the stem. The plug is then pushed out of the core of the stem.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.