Bellows actuator
US5181452A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 22, 1991 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Nov 22, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16J3/06
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
A bellows actuator has at least one bellows chamber comprising at least three chamber segments arranged around an axis. Each of the chamber segments forms a radially outwardly extending protrusion comprising four chamber wall portions, which merge with one another along fold lines which extend peripherally and radially of the bellows chamber and converge radially outwardly to meet at radially outermost apexes of the chamber segments. The bellows actuator is expansible and contractible along the axis by flexure of the wall portions relative to one another about the fold lines in response to pressure changes within the bellows chamber.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.