Fluid control assembly with flange spacer
US6202981A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1999 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Jul 13, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L23/12
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A fluid control assembly including a fluid control device having a main body, annular shoulders extending from opposite sides of the main body, and a tubular, relatively compressible liner extending out of opposite sides of the body through and axially beyond the shoulders, and at least one relatively non-compressible flange spacer positioned on each shoulder. The flange spacers extend from the main body of the fluid control device to between ends of the shoulders and ends of the liner, when the liner is in a non-compressed state. According to one embodiment, the fluid control assembly further includes bolts for securing the fluid control assembly to a pipe flange, and a liveload assembly positioned on each bolt. Each liveload assembly includes an upper washer, a lower washer, at least one spring positioned to resist compression between the upper and the lower washers, and a ribbon secured at a first end to one of the upper and the lower washers, with a second end of the ribbon extending towards the other of the upper and the lower washers. The ribbon has a total length including a comparison portion substantially equal to a proper compressed height of the at least one spring, with…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.