Pre-loaded valve follower sealing apparatus
US4759529A · kind A · utility
8Cited by
7References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1987 |
| Grant date | Jul 26, 1988 |
| Priority date | — |
| Expiry date | May 20, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16K3/0236
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The improved pre-loaded valve follower sealing apparatus comprises a follower ring and flange insert assembly. The assembly includes a pair of hollow cylinders compressively containing a follower preload and sealing element. That follower preload and sealing element is substantially annular in shape, but has an interior fluid contacting surface which is concave in transverse cross-section when not under compression, but which is rendered substantially smoothly cylindrical when placed under compression.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.