Dashpot apparatus including a flexible diaphragm piston
US4161241A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 1977 |
| Grant date | Jul 17, 1979 |
| Priority date | — |
| Expiry date | Dec 12, 1997 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/18
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A dashpot apparatus is shown as having a housing containing a movable diaphragm which, in turn, effectively establishes or defines two variable and distinct chambers at either side thereof within the housing; a movable rod or actuator extending generally through a wall of the housing is operatively connected to the diaphragm; and a porous air bleed member operatively carried by the actuator within the housing serves to permit a controlled rate of air flow from a first of the two variable chambers to the other of the two variable chambers in order to thereby control the velocity of movement of the actuator in the direction of travel toward the first of such chambers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.