Prestressed hydraulic accumulator
US4603711A · kind A · utility
5Cited by
5References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1984 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Oct 18, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF15B2201/415
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydraulic accumulator comprises two-half shells, the diaphragm therebetween defining two cavities. One cavity contains pressurized gas and the cavity receives hydraulic fluid under pressure. The two-half shells are held together by a mechanical element, such as a belt which has been previously prestressed to a tension selected according to the maximum pressure to which the accumulator will be subjected. The use of the prestressed mechanical element changes the dynamic stresses ordinarily found in a hydraulic accumulator to static stresses, thus minimizing the occurrence of creeks and failure of the device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.