Method of aligning and fixing valve components during valve assembly
US4740347A · kind A · utility
17Cited by
12References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 8, 1984 |
| Grant date | Apr 26, 1988 |
| Priority date | — |
| Expiry date | Jun 8, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49986
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention provides a means whereby a body such as that of a butterfly valve can be prepared with minimal machining. The manufacture of a butterfly valve is described in which the stem openings for the valve are left in their as-cast condition, the stem bushings inserted, aligned with a stem replica and then permanently locked in aligned position by filling the voids between the bushings and the walls of their openings with the same elastomeric compound from which the valve seat is molded. The compound, after curing or setting, being of such thin wall section that for all practical purposes it is a rigid material.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.