Accumulator consisting of welded vessel and lid
US4084621A · kind A · utility
Inventors
Key dates
| Filing date | Feb 11, 1977 |
| Grant date | Apr 18, 1978 |
| Priority date | — |
| Expiry date | Feb 11, 1997 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2201/60
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
The pressure vessel of a hydraulic accumulator comprises bowl-shaped body and lid members welded together edge to edge, lid member uppermost. A bowl-shaped diaphragm in the vessel having its concave surface facing up is supported by a rigid ring having a large diameter radially outer portion seated on an upwardly facing circumferential shoulder on the body member, near its rim. A smaller diameter radially inner portion of the ring is clinched over a bead around the edge of the diaphragm. The ring also has a frustoconical, upwardly tapering radially intermediate portion connecting its radially inner and outer portions, to hold the rim of the diaphragm at a high level in the vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.