Gas driven hatch cover assembly
US5956901A · kind A · utility
1Cited by
18References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1997 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | Jun 24, 2017 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41F3/077
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A hatch assembly having a hatch cover biased to a normally closed position. The hatch cover is connected to an impeller contained and rotatable within a impeller chamber of a housing. When the cover is to be opened, pressurized gas is introduced into the housing causing rotation of the impeller. By virtue of the coupling of the impeller to the hatch cover, the rotation causes the hatch cover to open. After opening, the hatch cover may thereafter be closed by a spring bias forming part of the coupling arrangement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.